2014-10-10 12:50:52

by Tomeu Vizoso

Subject: [PATCH 00/10] Tegra124 EMC (external memory controller) support

Hello,

because Mikko's internship is over and he's short of time these days, I have
taken his patches witht he intention of moving this work forward.

It depends on Thierry's MC patches at [0] and a branch can be found at [1]. So far it has been tested only on a Jetson TK1.

The comments from the last review round have been addressed, most notably:

- Timings are per-ramcode.

- A new property in the DT can cause the whole 4 bits in PMC_STRAPPING_OPT_A_0
[7:4] to be used when decoding the ram code, allowing for a single board to
support more ram configurations.

- Each driver accesses only its own registers, so API has been added so each
driver can delegate on the others.

- Usage of debugfs for setting the clock rate of the EMC clock has been split
in its own commit in case it's still controversial.

Patch 1: Removes clocks that are unused because of not being fully functional

Patch 2: Documents bindings for the new long-ram-code property

Patch 3: Adds API for reading the ram code

Patch 4: Adds bindings for the EMC node

Patch 5: Adds EMC node to Tegra124 DT

Patch 6: Adds timings for Jetson TK1 board

Patch 7: Adds functions to the MC driver so the EMC driver can stay within its
own registers

Patch 8: Adds the actual EMC driver, making use of the new MC API

Patch 9: Adds EMC clock driver, making use of API provided by the EMC driver

Patch 10: Adds debugfs entry for getting and setting the EMC rate

Regards,

Tomeu

[0] https://github.com/thierryreding/linux/commits/staging/iommu
[1] http://cgit.collabora.com/git/user/tomeu/linux.git/log/?h=emc

Mikko Perttunen (8):
clk: tegra124: Remove old emc_mux and emc clocks
soc/tegra: Add ram code reader helper
of: Add Tegra124 EMC bindings
ARM: tegra: Add EMC to Tegra124 device tree
ARM: tegra: Add EMC timings to Jetson TK1 device tree
memory: tegra: Add API needed by the EMC driver
memory: tegra: Add EMC (external memory controller) driver
clk: tegra: Add EMC clock driver

Tomeu Vizoso (2):
soc/tegra: Document long-ram-code property in nvidia,tegra20-apbmisc
memory: tegra: Add debugfs entry for getting and setting the EMC rate

.../bindings/memory-controllers/tegra-emc.txt | 41 +
.../bindings/misc/nvidia,tegra20-apbmisc.txt | 3 +
arch/arm/boot/dts/tegra124-jetson-tk1-emc.dtsi | 2412 ++++++++++++++++++++
arch/arm/boot/dts/tegra124-jetson-tk1.dts | 2 +
arch/arm/boot/dts/tegra124.dtsi | 7 +
drivers/clk/tegra/Makefile | 2 +-
drivers/clk/tegra/clk-emc.c | 449 ++++
drivers/clk/tegra/clk-tegra124.c | 13 +-
drivers/clk/tegra/clk.h | 2 +
drivers/memory/Kconfig | 10 +
drivers/memory/Makefile | 1 -
drivers/memory/tegra/Makefile | 1 +
drivers/memory/tegra/tegra-mc.c | 172 ++
drivers/memory/tegra/tegra124-emc.c | 1164 ++++++++++
drivers/soc/tegra/fuse/tegra-apbmisc.c | 19 +
include/soc/tegra/fuse.h | 1 +
include/soc/tegra/memory.h | 19 +
17 files changed, 4304 insertions(+), 14 deletions(-)
create mode 100644 Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt
create mode 100644 arch/arm/boot/dts/tegra124-jetson-tk1-emc.dtsi
create mode 100644 drivers/clk/tegra/clk-emc.c
create mode 100644 drivers/memory/tegra/tegra124-emc.c
create mode 100644 include/soc/tegra/memory.h

--
1.9.3

2014-10-10 12:51:00

by Tomeu Vizoso

Subject: [PATCH 01/10] clk: tegra124: Remove old emc_mux and emc clocks

From: Mikko Perttunen <[email protected]>

These clocks have never been able to do anything.

Signed-off-by: Mikko Perttunen <[email protected]>
Signed-off-by: Tomeu Vizoso <[email protected]>
---
drivers/clk/tegra/clk-tegra124.c | 11 -----------
1 file changed, 11 deletions(-)

diff --git a/drivers/clk/tegra/clk-tegra124.c b/drivers/clk/tegra/clk-tegra124.c
index f5f9bac..9c9b3cb 100644
--- a/drivers/clk/tegra/clk-tegra124.c
+++ b/drivers/clk/tegra/clk-tegra124.c
@@ -150,11 +150,6 @@ static const char *mux_plld_out0_plld2_out0[] = {
};
#define mux_plld_out0_plld2_out0_idx NULL

-static const char *mux_pllmcp_clkm[] = {
- "pll_m", "pll_c", "pll_p", "clk_m", "pll_m_ud", "pll_c2", "pll_c3",
-};
-#define mux_pllmcp_clkm_idx NULL
-
static struct div_nmp pllxc_nmp = {
.divm_shift = 0,
.divm_width = 8,
@@ -790,7 +785,6 @@ static struct tegra_clk tegra124_clks[tegra_clk_max] __initdata = {
[tegra_clk_i2c2] = { .dt_id = TEGRA124_CLK_I2C2, .present = true },
[tegra_clk_uartc] = { .dt_id = TEGRA124_CLK_UARTC, .present = true },
[tegra_clk_mipi_cal] = { .dt_id = TEGRA124_CLK_MIPI_CAL, .present = true },
- [tegra_clk_emc] = { .dt_id = TEGRA124_CLK_EMC, .present = true },
[tegra_clk_usb2] = { .dt_id = TEGRA124_CLK_USB2, .present = true },
[tegra_clk_usb3] = { .dt_id = TEGRA124_CLK_USB3, .present = true },
[tegra_clk_vde_8] = { .dt_id = TEGRA124_CLK_VDE, .present = true },
@@ -1124,11 +1118,6 @@ static __init void tegra124_periph_clk_init(void __iomem *clk_base,
clk_base + PLLD2_BASE, 25, 1, 0, &pll_d2_lock);
clks[TEGRA124_CLK_DSIB_MUX] = clk;

- /* emc mux */
- clk = clk_register_mux(NULL, "emc_mux", mux_pllmcp_clkm,
- ARRAY_SIZE(mux_pllmcp_clkm), 0,
- clk_base + CLK_SOURCE_EMC,
- 29, 3, 0, &emc_lock);

clk = tegra_clk_register_mc("mc", "emc_mux", clk_base + CLK_SOURCE_EMC,
&emc_lock);
--
1.9.3

2014-10-10 12:51:15

by Tomeu Vizoso

Subject: [PATCH 03/10] soc/tegra: Add ram code reader helper

From: Mikko Perttunen <[email protected]>

Needed for the EMC and MC drivers to know what timings from the DT to use.

Signed-off-by: Mikko Perttunen <[email protected]>
Signed-off-by: Tomeu Vizoso <[email protected]>
---
drivers/soc/tegra/fuse/tegra-apbmisc.c | 19 +++++++++++++++++++
include/soc/tegra/fuse.h | 1 +
2 files changed, 20 insertions(+)

diff --git a/drivers/soc/tegra/fuse/tegra-apbmisc.c b/drivers/soc/tegra/fuse/tegra-apbmisc.c
index 3bf5aba..e580892 100644
--- a/drivers/soc/tegra/fuse/tegra-apbmisc.c
+++ b/drivers/soc/tegra/fuse/tegra-apbmisc.c
@@ -28,8 +28,13 @@
#define APBMISC_SIZE 0x64
#define FUSE_SKU_INFO 0x10

+#define PMC_STRAPPING_OPT_A_RAM_CODE_MASK_LONG (0xf << 4)
+#define PMC_STRAPPING_OPT_A_RAM_CODE_MASK_SHORT (0x3 << 4)
+#define PMC_STRAPPING_OPT_A_RAM_CODE_SHIFT 4
+
static void __iomem *apbmisc_base;
static void __iomem *strapping_base;
+static bool long_ram_code;

u32 tegra_read_chipid(void)
{
@@ -54,6 +59,18 @@ u32 tegra_read_straps(void)
return 0;
}

+u32 tegra_read_ram_code(void)
+{
+ u32 straps = tegra_read_straps();
+
+ if (long_ram_code)
+ straps &= PMC_STRAPPING_OPT_A_RAM_CODE_MASK_LONG;
+ else
+ straps &= PMC_STRAPPING_OPT_A_RAM_CODE_MASK_SHORT;
+
+ return straps >> PMC_STRAPPING_OPT_A_RAM_CODE_SHIFT;
+}
+
static const struct of_device_id apbmisc_match[] __initconst = {
{ .compatible = "nvidia,tegra20-apbmisc", },
{},
@@ -112,4 +129,6 @@ void __init tegra_init_apbmisc(void)
strapping_base = of_iomap(np, 1);
if (!strapping_base)
pr_err("ioremap tegra strapping_base failed\n");
+
+ long_ram_code = of_property_read_bool(np, "nvidia,long-ram-code");
}
diff --git a/include/soc/tegra/fuse.h b/include/soc/tegra/fuse.h
index 8e12494..4ad6fd9 100644
--- a/include/soc/tegra/fuse.h
+++ b/include/soc/tegra/fuse.h
@@ -55,6 +55,7 @@ struct tegra_sku_info {
};

u32 tegra_read_straps(void);
+u32 tegra_read_ram_code(void);
u32 tegra_read_chipid(void);
int tegra_fuse_readl(unsigned long offset, u32 *value);

--
1.9.3

2014-10-10 12:51:05

by Tomeu Vizoso

Subject: [PATCH 02/10] soc/tegra: Document long-ram-code property in nvidia,tegra20-apbmisc

Signed-off-by: Tomeu Vizoso <[email protected]>
---
Documentation/devicetree/bindings/misc/nvidia,tegra20-apbmisc.txt | 3 +++
1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/misc/nvidia,tegra20-apbmisc.txt b/Documentation/devicetree/bindings/misc/nvidia,tegra20-apbmisc.txt
index b97b8be..e2562ed 100644
--- a/Documentation/devicetree/bindings/misc/nvidia,tegra20-apbmisc.txt
+++ b/Documentation/devicetree/bindings/misc/nvidia,tegra20-apbmisc.txt
@@ -11,3 +11,6 @@ Required properties:
The second entry gives the physical address and length of the
registers indicating the strapping options.

+Optional properties:
+- nvidia,long-ram-code: boolean that tells whether the ram code is long (4 bit)
+ or short (2 bit). If not present, false.
--
1.9.3

2014-10-10 12:51:21

by Tomeu Vizoso

Subject: [PATCH 05/10] ARM: tegra: Add EMC to Tegra124 device tree

From: Mikko Perttunen <[email protected]>

This adds a node for the EMC memory controller. It is always enabled, but only
provides read-only functionality without board-specific timing tables.

Signed-off-by: Mikko Perttunen <[email protected]>
Signed-off-by: Tomeu Vizoso <[email protected]>
---
arch/arm/boot/dts/tegra124.dtsi | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/arch/arm/boot/dts/tegra124.dtsi b/arch/arm/boot/dts/tegra124.dtsi
index 0ee30f6..97c9f8b 100644
--- a/arch/arm/boot/dts/tegra124.dtsi
+++ b/arch/arm/boot/dts/tegra124.dtsi
@@ -567,6 +567,13 @@
#iommu-cells = <1>;
};

+ emc@0,7001b000 {
+ compatible = "nvidia,tegra124-emc";
+ reg = <0x0 0x7001b000 0x0 0x1000>;
+
+ nvidia,memory-controller = <&mc>;
+ };
+
sata@0,70020000 {
compatible = "nvidia,tegra124-ahci";

--
1.9.3

2014-10-10 12:51:33

by Tomeu Vizoso

Subject: [PATCH 06/10] ARM: tegra: Add EMC timings to Jetson TK1 device tree

From: Mikko Perttunen <[email protected]>

This adds a new file, tegra124-jetson-tk1-emc.dtsi that contains
valid timings for the EMC memory clock. The file is included to the
main Jetson TK1 device tree.

Signed-off-by: Mikko Perttunen <[email protected]>
Signed-off-by: Tomeu Vizoso <[email protected]>
---
arch/arm/boot/dts/tegra124-jetson-tk1-emc.dtsi | 2412 ++++++++++++++++++++++++
arch/arm/boot/dts/tegra124-jetson-tk1.dts | 2 +
2 files changed, 2414 insertions(+)
create mode 100644 arch/arm/boot/dts/tegra124-jetson-tk1-emc.dtsi

diff --git a/arch/arm/boot/dts/tegra124-jetson-tk1-emc.dtsi b/arch/arm/boot/dts/tegra124-jetson-tk1-emc.dtsi
new file mode 100644
index 0000000..3a92ee49
--- /dev/null
+++ b/arch/arm/boot/dts/tegra124-jetson-tk1-emc.dtsi
@@ -0,0 +1,2412 @@
+/ {
+ clock@0,60006000 {
+ emc-timings@0 {
+ nvidia,ram-code = <3>;
+
+ timing@0 {
+ clock-frequency = <12750000>;
+ nvidia,parent-clock-frequency = <408000000>;
+ clocks = <&tegra_car TEGRA124_CLK_PLL_P>;
+ clock-names = "emc-parent";
+ };
+ timing@1 {
+ clock-frequency = <20400000>;
+ nvidia,parent-clock-frequency = <408000000>;
+ clocks = <&tegra_car TEGRA124_CLK_PLL_P>;
+ clock-names = "emc-parent";
+ };
+ timing@2 {
+ clock-frequency = <40800000>;
+ nvidia,parent-clock-frequency = <408000000>;
+ clocks = <&tegra_car TEGRA124_CLK_PLL_P>;
+ clock-names = "emc-parent";
+ };
+ timing@3 {
+ clock-frequency = <68000000>;
+ nvidia,parent-clock-frequency = <408000000>;
+ clocks = <&tegra_car TEGRA124_CLK_PLL_P>;
+ clock-names = "emc-parent";
+ };
+ timing@4 {
+ clock-frequency = <102000000>;
+ nvidia,parent-clock-frequency = <408000000>;
+ clocks = <&tegra_car TEGRA124_CLK_PLL_P>;
+ clock-names = "emc-parent";
+ };
+ timing@5 {
+ clock-frequency = <204000000>;
+ nvidia,parent-clock-frequency = <408000000>;
+ clocks = <&tegra_car TEGRA124_CLK_PLL_P>;
+ clock-names = "emc-parent";
+ };
+ timing@6 {
+ clock-frequency = <300000000>;
+ nvidia,parent-clock-frequency = <600000000>;
+ clocks = <&tegra_car TEGRA124_CLK_PLL_C>;
+ clock-names = "emc-parent";
+ };
+ timing@7 {
+ clock-frequency = <396000000>;
+ nvidia,parent-clock-frequency = <792000000>;
+ clocks = <&tegra_car TEGRA124_CLK_PLL_M>;
+ clock-names = "emc-parent";
+ };
+ timing@8 {
+ clock-frequency = <528000000>;
+ nvidia,parent-clock-frequency = <528000000>;
+ clocks = <&tegra_car TEGRA124_CLK_PLL_M_UD>;
+ clock-names = "emc-parent";
+ };
+ timing@9 {
+ clock-frequency = <600000000>;
+ nvidia,parent-clock-frequency = <600000000>;
+ clocks = <&tegra_car TEGRA124_CLK_PLL_C_UD>;
+ clock-names = "emc-parent";
+ };
+ timing@10 {
+ clock-frequency = <792000000>;
+ nvidia,parent-clock-frequency = <792000000>;
+ clocks = <&tegra_car TEGRA124_CLK_PLL_M_UD>;
+ clock-names = "emc-parent";
+ };
+ timing@11 {
+ clock-frequency = <924000000>;
+ nvidia,parent-clock-frequency = <924000000>;
+ clocks = <&tegra_car TEGRA124_CLK_PLL_M_UD>;
+ clock-names = "emc-parent";
+ };
+ };
+ };
+
+ emc@0,7001b000 {
+ timings@0 {
+ nvidia,ram-code = <3>;
+
+ timing@0 {
+ clock-frequency = <12750000>;
+
+ nvidia,emc-zcal-cnt-long = <0x00000042>;
+ nvidia,emc-auto-cal-interval = <0x001fffff>;
+ nvidia,emc-ctt-term-ctrl = <0x00000802>;
+ nvidia,emc-cfg = <0x73240000>;
+ nvidia,emc-cfg-2 = <0x000008c5>;
+ nvidia,emc-sel-dpd-ctrl = <0x00040128>;
+ nvidia,emc-cfg-dig-dll = <0x002c0068>;
+ nvidia,emc-bgbias-ctl0 = <0x00000008>;
+ nvidia,emc-auto-cal-config = <0xa1430000>;
+ nvidia,emc-auto-cal-config2 = <0x00000000>;
+ nvidia,emc-auto-cal-config3 = <0x00000000>;
+ nvidia,emc-mode-reset = <0x80001221>;
+ nvidia,emc-mode-1 = <0x80100003>;
+ nvidia,emc-mode-2 = <0x80200008>;
+ nvidia,emc-mode-4 = <0x00000000>;
+
+ nvidia,emc-configuration = <
+ 0x00000000 /* EMC_RC */
+ 0x00000003 /* EMC_RFC */
+ 0x00000000 /* EMC_RFC_SLR */
+ 0x00000000 /* EMC_RAS */
+ 0x00000000 /* EMC_RP */
+ 0x00000004 /* EMC_R2W */
+ 0x0000000a /* EMC_W2R */
+ 0x00000003 /* EMC_R2P */
+ 0x0000000b /* EMC_W2P */
+ 0x00000000 /* EMC_RD_RCD */
+ 0x00000000 /* EMC_WR_RCD */
+ 0x00000003 /* EMC_RRD */
+ 0x00000003 /* EMC_REXT */
+ 0x00000000 /* EMC_WEXT */
+ 0x00000006 /* EMC_WDV */
+ 0x00000006 /* EMC_WDV_MASK */
+ 0x00000006 /* EMC_QUSE */
+ 0x00000002 /* EMC_QUSE_WIDTH */
+ 0x00000000 /* EMC_IBDLY */
+ 0x00000005 /* EMC_EINPUT */
+ 0x00000005 /* EMC_EINPUT_DURATION */
+ 0x00010000 /* EMC_PUTERM_EXTRA */
+ 0x00000003 /* EMC_PUTERM_WIDTH */
+ 0x00000000 /* EMC_PUTERM_ADJ */
+ 0x00000000 /* EMC_CDB_CNTL_1 */
+ 0x00000000 /* EMC_CDB_CNTL_2 */
+ 0x00000000 /* EMC_CDB_CNTL_3 */
+ 0x00000004 /* EMC_QRST */
+ 0x0000000c /* EMC_QSAFE */
+ 0x0000000d /* EMC_RDV */
+ 0x0000000f /* EMC_RDV_MASK */
+ 0x00000060 /* EMC_REFRESH */
+ 0x00000000 /* EMC_BURST_REFRESH_NUM */
+ 0x00000018 /* EMC_PRE_REFRESH_REQ_CNT */
+ 0x00000002 /* EMC_PDEX2WR */
+ 0x00000002 /* EMC_PDEX2RD */
+ 0x00000001 /* EMC_PCHG2PDEN */
+ 0x00000000 /* EMC_ACT2PDEN */
+ 0x00000007 /* EMC_AR2PDEN */
+ 0x0000000f /* EMC_RW2PDEN */
+ 0x00000005 /* EMC_TXSR */
+ 0x00000005 /* EMC_TXSRDLL */
+ 0x00000004 /* EMC_TCKE */
+ 0x00000005 /* EMC_TCKESR */
+ 0x00000004 /* EMC_TPD */
+ 0x00000000 /* EMC_TFAW */
+ 0x00000000 /* EMC_TRPAB */
+ 0x00000005 /* EMC_TCLKSTABLE */
+ 0x00000005 /* EMC_TCLKSTOP */
+ 0x00000064 /* EMC_TREFBW */
+ 0x00000000 /* EMC_FBIO_CFG6 */
+ 0x00000000 /* EMC_ODT_WRITE */
+ 0x00000000 /* EMC_ODT_READ */
+ 0x106aa298 /* EMC_FBIO_CFG5 */
+ 0x002c00a0 /* EMC_CFG_DIG_DLL */
+ 0x00008000 /* EMC_CFG_DIG_DLL_PERIOD */
+ 0x00064000 /* EMC_DLL_XFORM_DQS0 */
+ 0x00064000 /* EMC_DLL_XFORM_DQS1 */
+ 0x00064000 /* EMC_DLL_XFORM_DQS2 */
+ 0x00064000 /* EMC_DLL_XFORM_DQS3 */
+ 0x00064000 /* EMC_DLL_XFORM_DQS4 */
+ 0x00064000 /* EMC_DLL_XFORM_DQS5 */
+ 0x00064000 /* EMC_DLL_XFORM_DQS6 */
+ 0x00064000 /* EMC_DLL_XFORM_DQS7 */
+ 0x00064000 /* EMC_DLL_XFORM_DQS8 */
+ 0x00064000 /* EMC_DLL_XFORM_DQS9 */
+ 0x00064000 /* EMC_DLL_XFORM_DQS10 */
+ 0x00064000 /* EMC_DLL_XFORM_DQS11 */
+ 0x00064000 /* EMC_DLL_XFORM_DQS12 */
+ 0x00064000 /* EMC_DLL_XFORM_DQS13 */
+ 0x00064000 /* EMC_DLL_XFORM_DQS14 */
+ 0x00064000 /* EMC_DLL_XFORM_DQS15 */
+ 0x00000000 /* EMC_DLL_XFORM_QUSE0 */
+ 0x00000000 /* EMC_DLL_XFORM_QUSE1 */
+ 0x00000000 /* EMC_DLL_XFORM_QUSE2 */
+ 0x00000000 /* EMC_DLL_XFORM_QUSE3 */
+ 0x00000000 /* EMC_DLL_XFORM_QUSE4 */
+ 0x00000000 /* EMC_DLL_XFORM_QUSE5 */
+ 0x00000000 /* EMC_DLL_XFORM_QUSE6 */
+ 0x00000000 /* EMC_DLL_XFORM_QUSE7 */
+ 0x00000000 /* EMC_DLL_XFORM_ADDR0 */
+ 0x00000000 /* EMC_DLL_XFORM_ADDR1 */
+ 0x00000000 /* EMC_DLL_XFORM_ADDR2 */
+ 0x00000000 /* EMC_DLL_XFORM_ADDR3 */
+ 0x00000000 /* EMC_DLL_XFORM_ADDR4 */
+ 0x00000000 /* EMC_DLL_XFORM_ADDR5 */
+ 0x00000000 /* EMC_DLL_XFORM_QUSE8 */
+ 0x00000000 /* EMC_DLL_XFORM_QUSE9 */
+ 0x00000000 /* EMC_DLL_XFORM_QUSE10 */
+ 0x00000000 /* EMC_DLL_XFORM_QUSE11 */
+ 0x00000000 /* EMC_DLL_XFORM_QUSE12 */
+ 0x00000000 /* EMC_DLL_XFORM_QUSE13 */
+ 0x00000000 /* EMC_DLL_XFORM_QUSE14 */
+ 0x00000000 /* EMC_DLL_XFORM_QUSE15 */
+ 0x00000000 /* EMC_DLI_TRIM_TXDQS0 */
+ 0x00000000 /* EMC_DLI_TRIM_TXDQS1 */
+ 0x00000000 /* EMC_DLI_TRIM_TXDQS2 */
+ 0x00000000 /* EMC_DLI_TRIM_TXDQS3 */
+ 0x00000000 /* EMC_DLI_TRIM_TXDQS4 */
+ 0x00000000 /* EMC_DLI_TRIM_TXDQS5 */
+ 0x00000000 /* EMC_DLI_TRIM_TXDQS6 */
+ 0x00000000 /* EMC_DLI_TRIM_TXDQS7 */
+ 0x00000000 /* EMC_DLI_TRIM_TXDQS8 */
+ 0x00000000 /* EMC_DLI_TRIM_TXDQS9 */
+ 0x00000000 /* EMC_DLI_TRIM_TXDQS10 */
+ 0x00000000 /* EMC_DLI_TRIM_TXDQS11 */
+ 0x00000000 /* EMC_DLI_TRIM_TXDQS12 */
+ 0x00000000 /* EMC_DLI_TRIM_TXDQS13 */
+ 0x00000000 /* EMC_DLI_TRIM_TXDQS14 */
+ 0x00000000 /* EMC_DLI_TRIM_TXDQS15 */
+ 0x000fc000 /* EMC_DLL_XFORM_DQ0 */
+ 0x000fc000 /* EMC_DLL_XFORM_DQ1 */
+ 0x000fc000 /* EMC_DLL_XFORM_DQ2 */
+ 0x000fc000 /* EMC_DLL_XFORM_DQ3 */
+ 0x0000fc00 /* EMC_DLL_XFORM_DQ4 */
+ 0x0000fc00 /* EMC_DLL_XFORM_DQ5 */
+ 0x0000fc00 /* EMC_DLL_XFORM_DQ6 */
+ 0x0000fc00 /* EMC_DLL_XFORM_DQ7 */
+ 0x10000280 /* EMC_XM2CMDPADCTRL */
+ 0x00000000 /* EMC_XM2CMDPADCTRL4 */
+ 0x00111111 /* EMC_XM2CMDPADCTRL5 */
+ 0x0130b118 /* EMC_XM2DQSPADCTRL2 */
+ 0x00000000 /* EMC_XM2DQPADCTRL2 */
+ 0x00000000 /* EMC_XM2DQPADCTRL3 */
+ 0x77ffc081 /* EMC_XM2CLKPADCTRL */
+ 0x00000e0e /* EMC_XM2CLKPADCTRL2 */
+ 0x81f1f108 /* EMC_XM2COMPPADCTRL */
+ 0x07070004 /* EMC_XM2VTTGENPADCTRL */
+ 0x0000003f /* EMC_XM2VTTGENPADCTRL2 */
+ 0x016eeeee /* EMC_XM2VTTGENPADCTRL3 */
+ 0x51451400 /* EMC_XM2DQSPADCTRL3 */
+ 0x00514514 /* EMC_XM2DQSPADCTRL4 */
+ 0x00514514 /* EMC_XM2DQSPADCTRL5 */
+ 0x51451400 /* EMC_XM2DQSPADCTRL6 */
+ 0x0000003f /* EMC_DSR_VTTGEN_DRV */
+ 0x00000007 /* EMC_TXDSRVTTGEN */
+ 0x00000000 /* EMC_FBIO_SPARE */
+ 0x00000000 /* EMC_ZCAL_INTERVAL */
+ 0x00000042 /* EMC_ZCAL_WAIT_CNT */
+ 0x000e000e /* EMC_MRS_WAIT_CNT */
+ 0x000e000e /* EMC_MRS_WAIT_CNT2 */
+ 0x00000000 /* EMC_CTT */
+ 0x00000003 /* EMC_CTT_DURATION */
+ 0x0000f2f3 /* EMC_CFG_PIPE */
+ 0x800001c5 /* EMC_DYN_SELF_REF_CONTROL */
+ 0x0000000a /* EMC_QPOP */
+ >;
+ };
+
+ timing@1 {
+ clock-frequency = <20400000>;
+
+ nvidia,emc-zcal-cnt-long = <0x00000042>;
+ nvidia,emc-auto-cal-interval = <0x001fffff>;
+ nvidia,emc-ctt-term-ctrl = <0x00000802>;
+ nvidia,emc-cfg = <0x73240000>;
+ nvidia,emc-cfg-2 = <0x000008c5>;
+ nvidia,emc-sel-dpd-ctrl = <0x00040128>;
+ nvidia,emc-cfg-dig-dll = <0x002c0068>;
+ nvidia,emc-bgbias-ctl0 = <0x00000008>;
+ nvidia,emc-auto-cal-config = <0x00000000>;
+ nvidia,emc-auto-cal-config2 = <0x00000000>;
+ nvidia,emc-auto-cal-config3 = <0xa1430000>;
+ nvidia,emc-mode-reset = <0x80001221>;
+ nvidia,emc-mode-1 = <0x80100003>;
+ nvidia,emc-mode-2 = <0x80200008>;
+ nvidia,emc-mode-4 = <0x00000000>;
+
+ nvidia,emc-configuration = <
+ 0x00000000
+ 0x00000005
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000004
+ 0x0000000a
+ 0x00000003
+ 0x0000000b
+ 0x00000000
+ 0x00000000
+ 0x00000003
+ 0x00000003
+ 0x00000000
+ 0x00000006
+ 0x00000006
+ 0x00000006
+ 0x00000002
+ 0x00000000
+ 0x00000005
+ 0x00000005
+ 0x00010000
+ 0x00000003
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000004
+ 0x0000000c
+ 0x0000000d
+ 0x0000000f
+ 0x0000009a
+ 0x00000000
+ 0x00000026
+ 0x00000002
+ 0x00000002
+ 0x00000001
+ 0x00000000
+ 0x00000007
+ 0x0000000f
+ 0x00000006
+ 0x00000006
+ 0x00000004
+ 0x00000005
+ 0x00000004
+ 0x00000000
+ 0x00000000
+ 0x00000005
+ 0x00000005
+ 0x000000a0
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x106aa298
+ 0x002c00a0
+ 0x00008000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x000fc000
+ 0x000fc000
+ 0x000fc000
+ 0x000fc000
+ 0x0000fc00
+ 0x0000fc00
+ 0x0000fc00
+ 0x0000fc00
+ 0x10000280
+ 0x00000000
+ 0x00111111
+ 0x0130b118
+ 0x00000000
+ 0x00000000
+ 0x77ffc081
+ 0x00000e0e
+ 0x81f1f108
+ 0x07070004
+ 0x0000003f
+ 0x016eeeee
+ 0x51451400
+ 0x00514514
+ 0x00514514
+ 0x51451400
+ 0x0000003f
+ 0x0000000b
+ 0x00000000
+ 0x00000000
+ 0x00000042
+ 0x000e000e
+ 0x000e000e
+ 0x00000000
+ 0x00000003
+ 0x0000f2f3
+ 0x8000023a
+ 0x0000000a
+ >;
+ };
+ timing@2 {
+ clock-frequency = <40800000>;
+
+ nvidia,emc-zcal-cnt-long = <0x00000042>;
+ nvidia,emc-auto-cal-interval = <0x001fffff>;
+ nvidia,emc-ctt-term-ctrl = <0x00000802>;
+ nvidia,emc-cfg = <0x73240000>;
+ nvidia,emc-cfg-2 = <0x000008c5>;
+ nvidia,emc-sel-dpd-ctrl = <0x00040128>;
+ nvidia,emc-cfg-dig-dll = <0x002c0068>;
+ nvidia,emc-bgbias-ctl0 = <0x00000008>;
+ nvidia,emc-auto-cal-config = <0x00000000>;
+ nvidia,emc-auto-cal-config2 = <0x00000000>;
+ nvidia,emc-auto-cal-config3 = <0xa1430000>;
+ nvidia,emc-mode-reset = <0x80001221>;
+ nvidia,emc-mode-1 = <0x80100003>;
+ nvidia,emc-mode-2 = <0x80200008>;
+ nvidia,emc-mode-4 = <0x00000000>;
+
+ nvidia,emc-configuration = <
+ 0x00000001
+ 0x0000000a
+ 0x00000000
+ 0x00000001
+ 0x00000000
+ 0x00000004
+ 0x0000000a
+ 0x00000003
+ 0x0000000b
+ 0x00000000
+ 0x00000000
+ 0x00000003
+ 0x00000003
+ 0x00000000
+ 0x00000006
+ 0x00000006
+ 0x00000006
+ 0x00000002
+ 0x00000000
+ 0x00000005
+ 0x00000005
+ 0x00010000
+ 0x00000003
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000004
+ 0x0000000c
+ 0x0000000d
+ 0x0000000f
+ 0x00000134
+ 0x00000000
+ 0x0000004d
+ 0x00000002
+ 0x00000002
+ 0x00000001
+ 0x00000000
+ 0x00000008
+ 0x0000000f
+ 0x0000000c
+ 0x0000000c
+ 0x00000004
+ 0x00000005
+ 0x00000004
+ 0x00000000
+ 0x00000000
+ 0x00000005
+ 0x00000005
+ 0x0000013f
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x106aa298
+ 0x002c00a0
+ 0x00008000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x000fc000
+ 0x000fc000
+ 0x000fc000
+ 0x000fc000
+ 0x0000fc00
+ 0x0000fc00
+ 0x0000fc00
+ 0x0000fc00
+ 0x10000280
+ 0x00000000
+ 0x00111111
+ 0x0130b118
+ 0x00000000
+ 0x00000000
+ 0x77ffc081
+ 0x00000e0e
+ 0x81f1f108
+ 0x07070004
+ 0x0000003f
+ 0x016eeeee
+ 0x51451400
+ 0x00514514
+ 0x00514514
+ 0x51451400
+ 0x0000003f
+ 0x00000015
+ 0x00000000
+ 0x00000000
+ 0x00000042
+ 0x000e000e
+ 0x000e000e
+ 0x00000000
+ 0x00000003
+ 0x0000f2f3
+ 0x80000370
+ 0x0000000a
+ >;
+ };
+ timing@3 {
+ clock-frequency = <68000000>;
+
+ nvidia,emc-zcal-cnt-long = <0x00000042>;
+ nvidia,emc-auto-cal-interval = <0x001fffff>;
+ nvidia,emc-ctt-term-ctrl = <0x00000802>;
+ nvidia,emc-cfg = <0x73240000>;
+ nvidia,emc-cfg-2 = <0x000008c5>;
+ nvidia,emc-sel-dpd-ctrl = <0x00040128>;
+ nvidia,emc-cfg-dig-dll = <0x002c0068>;
+ nvidia,emc-bgbias-ctl0 = <0x00000008>;
+ nvidia,emc-auto-cal-config = <0x00000000>;
+ nvidia,emc-auto-cal-config2 = <0x00000000>;
+ nvidia,emc-auto-cal-config3 = <0xa1430000>;
+ nvidia,emc-mode-reset = <0x80001221>;
+ nvidia,emc-mode-1 = <0x80100003>;
+ nvidia,emc-mode-2 = <0x80200008>;
+ nvidia,emc-mode-4 = <0x00000000>;
+
+ nvidia,emc-configuration = <
+ 0x00000003
+ 0x00000011
+ 0x00000000
+ 0x00000002
+ 0x00000000
+ 0x00000004
+ 0x0000000a
+ 0x00000003
+ 0x0000000b
+ 0x00000000
+ 0x00000000
+ 0x00000003
+ 0x00000003
+ 0x00000000
+ 0x00000006
+ 0x00000006
+ 0x00000006
+ 0x00000002
+ 0x00000000
+ 0x00000005
+ 0x00000005
+ 0x00010000
+ 0x00000003
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000004
+ 0x0000000c
+ 0x0000000d
+ 0x0000000f
+ 0x00000202
+ 0x00000000
+ 0x00000080
+ 0x00000002
+ 0x00000002
+ 0x00000001
+ 0x00000000
+ 0x0000000f
+ 0x0000000f
+ 0x00000013
+ 0x00000013
+ 0x00000004
+ 0x00000005
+ 0x00000004
+ 0x00000001
+ 0x00000000
+ 0x00000005
+ 0x00000005
+ 0x00000213
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x106aa298
+ 0x002c00a0
+ 0x00008000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x000fc000
+ 0x000fc000
+ 0x000fc000
+ 0x000fc000
+ 0x0000fc00
+ 0x0000fc00
+ 0x0000fc00
+ 0x0000fc00
+ 0x10000280
+ 0x00000000
+ 0x00111111
+ 0x0130b118
+ 0x00000000
+ 0x00000000
+ 0x77ffc081
+ 0x00000e0e
+ 0x81f1f108
+ 0x07070004
+ 0x0000003f
+ 0x016eeeee
+ 0x51451400
+ 0x00514514
+ 0x00514514
+ 0x51451400
+ 0x0000003f
+ 0x00000022
+ 0x00000000
+ 0x00000000
+ 0x00000042
+ 0x000e000e
+ 0x000e000e
+ 0x00000000
+ 0x00000003
+ 0x0000f2f3
+ 0x8000050e
+ 0x0000000a
+ >;
+ };
+ timing@4 {
+ clock-frequency = <102000000>;
+
+ nvidia,emc-zcal-cnt-long = <0x00000042>;
+ nvidia,emc-auto-cal-interval = <0x001fffff>;
+ nvidia,emc-ctt-term-ctrl = <0x00000802>;
+ nvidia,emc-cfg = <0x73240000>;
+ nvidia,emc-cfg-2 = <0x000008c5>;
+ nvidia,emc-sel-dpd-ctrl = <0x00040128>;
+ nvidia,emc-cfg-dig-dll = <0x002c0068>;
+ nvidia,emc-bgbias-ctl0 = <0x00000008>;
+ nvidia,emc-auto-cal-config = <0x00000000>;
+ nvidia,emc-auto-cal-config2 = <0x00000000>;
+ nvidia,emc-auto-cal-config3 = <0xa1430000>;
+ nvidia,emc-mode-reset = <0x80001221>;
+ nvidia,emc-mode-1 = <0x80100003>;
+ nvidia,emc-mode-2 = <0x80200008>;
+ nvidia,emc-mode-4 = <0x00000000>;
+
+ nvidia,emc-configuration = <
+ 0x00000004
+ 0x0000001a
+ 0x00000000
+ 0x00000003
+ 0x00000001
+ 0x00000004
+ 0x0000000a
+ 0x00000003
+ 0x0000000b
+ 0x00000001
+ 0x00000001
+ 0x00000003
+ 0x00000003
+ 0x00000000
+ 0x00000006
+ 0x00000006
+ 0x00000006
+ 0x00000002
+ 0x00000000
+ 0x00000005
+ 0x00000005
+ 0x00010000
+ 0x00000003
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000004
+ 0x0000000c
+ 0x0000000d
+ 0x0000000f
+ 0x00000304
+ 0x00000000
+ 0x000000c1
+ 0x00000002
+ 0x00000002
+ 0x00000001
+ 0x00000000
+ 0x00000018
+ 0x0000000f
+ 0x0000001c
+ 0x0000001c
+ 0x00000004
+ 0x00000005
+ 0x00000004
+ 0x00000003
+ 0x00000000
+ 0x00000005
+ 0x00000005
+ 0x0000031c
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x106aa298
+ 0x002c00a0
+ 0x00008000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x000fc000
+ 0x000fc000
+ 0x000fc000
+ 0x000fc000
+ 0x0000fc00
+ 0x0000fc00
+ 0x0000fc00
+ 0x0000fc00
+ 0x10000280
+ 0x00000000
+ 0x00111111
+ 0x0130b118
+ 0x00000000
+ 0x00000000
+ 0x77ffc081
+ 0x00000e0e
+ 0x81f1f108
+ 0x07070004
+ 0x0000003f
+ 0x016eeeee
+ 0x51451400
+ 0x00514514
+ 0x00514514
+ 0x51451400
+ 0x0000003f
+ 0x00000033
+ 0x00000000
+ 0x00000000
+ 0x00000042
+ 0x000e000e
+ 0x000e000e
+ 0x00000000
+ 0x00000003
+ 0x0000f2f3
+ 0x80000713
+ 0x0000000a
+ >;
+ };
+ timing@5 {
+ clock-frequency = <204000000>;
+
+ nvidia,emc-zcal-cnt-long = <0x00000042>;
+ nvidia,emc-auto-cal-interval = <0x001fffff>;
+ nvidia,emc-ctt-term-ctrl = <0x00000802>;
+ nvidia,emc-cfg = <0x73240000>;
+ nvidia,emc-cfg-2 = <0x0000088d>;
+ nvidia,emc-sel-dpd-ctrl = <0x00040008>;
+ nvidia,emc-cfg-dig-dll = <0x002c0068>;
+ nvidia,emc-bgbias-ctl0 = <0x00000008>;
+ nvidia,emc-auto-cal-config = <0x00000000>;
+ nvidia,emc-auto-cal-config2 = <0x00000000>;
+ nvidia,emc-auto-cal-config3 = <0xa1430000>;
+ nvidia,emc-mode-reset = <0x80001221>;
+ nvidia,emc-mode-1 = <0x80100003>;
+ nvidia,emc-mode-2 = <0x80200008>;
+ nvidia,emc-mode-4 = <0x00000000>;
+
+ nvidia,emc-configuration = <
+ 0x00000009
+ 0x00000035
+ 0x00000000
+ 0x00000006
+ 0x00000002
+ 0x00000005
+ 0x0000000a
+ 0x00000003
+ 0x0000000b
+ 0x00000002
+ 0x00000002
+ 0x00000003
+ 0x00000003
+ 0x00000000
+ 0x00000005
+ 0x00000005
+ 0x00000006
+ 0x00000002
+ 0x00000000
+ 0x00000004
+ 0x00000006
+ 0x00010000
+ 0x00000003
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000003
+ 0x0000000d
+ 0x0000000f
+ 0x00000011
+ 0x00000607
+ 0x00000000
+ 0x00000181
+ 0x00000002
+ 0x00000002
+ 0x00000001
+ 0x00000000
+ 0x00000032
+ 0x0000000f
+ 0x00000038
+ 0x00000038
+ 0x00000004
+ 0x00000005
+ 0x00000004
+ 0x00000007
+ 0x00000000
+ 0x00000005
+ 0x00000005
+ 0x00000638
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x106aa298
+ 0x002c00a0
+ 0x00008000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00064000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00008000
+ 0x00000000
+ 0x00000000
+ 0x00008000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00090000
+ 0x00090000
+ 0x00090000
+ 0x00090000
+ 0x00009000
+ 0x00009000
+ 0x00009000
+ 0x00009000
+ 0x10000280
+ 0x00000000
+ 0x00111111
+ 0x0130b118
+ 0x00000000
+ 0x00000000
+ 0x77ffc081
+ 0x00000707
+ 0x81f1f108
+ 0x07070004
+ 0x0000003f
+ 0x016eeeee
+ 0x51451400
+ 0x00514514
+ 0x00514514
+ 0x51451400
+ 0x0000003f
+ 0x00000066
+ 0x00000000
+ 0x00020000
+ 0x00000100
+ 0x000e000e
+ 0x000e000e
+ 0x00000000
+ 0x00000003
+ 0x0000d2b3
+ 0x80000d22
+ 0x0000000a
+ >;
+ };
+ timing@6 {
+ clock-frequency = <300000000>;
+
+ nvidia,emc-zcal-cnt-long = <0x00000042>;
+ nvidia,emc-auto-cal-interval = <0x001fffff>;
+ nvidia,emc-ctt-term-ctrl = <0x00000802>;
+ nvidia,emc-cfg = <0x73340000>;
+ nvidia,emc-cfg-2 = <0x000008d5>;
+ nvidia,emc-sel-dpd-ctrl = <0x00040128>;
+ nvidia,emc-cfg-dig-dll = <0x002c0068>;
+ nvidia,emc-bgbias-ctl0 = <0x00000000>;
+ nvidia,emc-auto-cal-config = <0x00000000>;
+ nvidia,emc-auto-cal-config2 = <0x00000000>;
+ nvidia,emc-auto-cal-config3 = <0xa1430000>;
+ nvidia,emc-mode-reset = <0x80000321>;
+ nvidia,emc-mode-1 = <0x80100002>;
+ nvidia,emc-mode-2 = <0x80200000>;
+ nvidia,emc-mode-4 = <0x00000000>;
+
+ nvidia,emc-configuration = <
+ 0x0000000d
+ 0x0000004d
+ 0x00000000
+ 0x00000009
+ 0x00000003
+ 0x00000004
+ 0x00000008
+ 0x00000002
+ 0x00000009
+ 0x00000003
+ 0x00000003
+ 0x00000002
+ 0x00000002
+ 0x00000000
+ 0x00000003
+ 0x00000003
+ 0x00000005
+ 0x00000002
+ 0x00000000
+ 0x00000002
+ 0x00000007
+ 0x00020000
+ 0x00000003
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000001
+ 0x0000000e
+ 0x00000010
+ 0x00000012
+ 0x000008e4
+ 0x00000000
+ 0x00000239
+ 0x00000001
+ 0x00000008
+ 0x00000001
+ 0x00000000
+ 0x0000004b
+ 0x0000000e
+ 0x00000052
+ 0x00000200
+ 0x00000004
+ 0x00000005
+ 0x00000004
+ 0x00000009
+ 0x00000000
+ 0x00000005
+ 0x00000005
+ 0x00000924
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x104ab098
+ 0x002c00a0
+ 0x00008000
+ 0x00030000
+ 0x00030000
+ 0x00030000
+ 0x00030000
+ 0x00030000
+ 0x00030000
+ 0x00030000
+ 0x00030000
+ 0x00030000
+ 0x00030000
+ 0x00030000
+ 0x00030000
+ 0x00030000
+ 0x00030000
+ 0x00030000
+ 0x00030000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00098000
+ 0x00098000
+ 0x00000000
+ 0x00098000
+ 0x00098000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00060000
+ 0x00060000
+ 0x00060000
+ 0x00060000
+ 0x00006000
+ 0x00006000
+ 0x00006000
+ 0x00006000
+ 0x10000280
+ 0x00000000
+ 0x00111111
+ 0x01231339
+ 0x00000000
+ 0x00000000
+ 0x77ffc081
+ 0x00000505
+ 0x81f1f108
+ 0x07070004
+ 0x00000000
+ 0x016eeeee
+ 0x51451420
+ 0x00514514
+ 0x00514514
+ 0x51451400
+ 0x0000003f
+ 0x00000096
+ 0x00000000
+ 0x00020000
+ 0x00000100
+ 0x0173000e
+ 0x0173000e
+ 0x00000000
+ 0x00000003
+ 0x000052a3
+ 0x800012d7
+ 0x00000009
+ >;
+ };
+ timing@7 {
+ clock-frequency = <396000000>;
+
+ nvidia,emc-zcal-cnt-long = <0x00000042>;
+ nvidia,emc-auto-cal-interval = <0x001fffff>;
+ nvidia,emc-ctt-term-ctrl = <0x00000802>;
+ nvidia,emc-cfg = <0x73340000>;
+ nvidia,emc-cfg-2 = <0x00000895>;
+ nvidia,emc-sel-dpd-ctrl = <0x00040008>;
+ nvidia,emc-cfg-dig-dll = <0x002c0068>;
+ nvidia,emc-bgbias-ctl0 = <0x00000000>;
+ nvidia,emc-auto-cal-config = <0x00000000>;
+ nvidia,emc-auto-cal-config2 = <0x00000000>;
+ nvidia,emc-auto-cal-config3 = <0xa1430000>;
+ nvidia,emc-mode-reset = <0x80000521>;
+ nvidia,emc-mode-1 = <0x80100002>;
+ nvidia,emc-mode-2 = <0x80200000>;
+ nvidia,emc-mode-4 = <0x00000000>;
+
+ nvidia,emc-configuration = <
+ 0x00000011
+ 0x00000066
+ 0x00000000
+ 0x0000000c
+ 0x00000004
+ 0x00000004
+ 0x00000008
+ 0x00000002
+ 0x0000000a
+ 0x00000004
+ 0x00000004
+ 0x00000002
+ 0x00000002
+ 0x00000000
+ 0x00000003
+ 0x00000003
+ 0x00000005
+ 0x00000002
+ 0x00000000
+ 0x00000001
+ 0x00000008
+ 0x00020000
+ 0x00000003
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x0000000f
+ 0x00000010
+ 0x00000012
+ 0x00000bd1
+ 0x00000000
+ 0x000002f4
+ 0x00000001
+ 0x00000008
+ 0x00000001
+ 0x00000000
+ 0x00000063
+ 0x0000000f
+ 0x0000006c
+ 0x00000200
+ 0x00000004
+ 0x00000005
+ 0x00000004
+ 0x0000000d
+ 0x00000000
+ 0x00000005
+ 0x00000005
+ 0x00000c11
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x104ab098
+ 0x002c00a0
+ 0x00008000
+ 0x00030000
+ 0x00030000
+ 0x00030000
+ 0x00030000
+ 0x00030000
+ 0x00030000
+ 0x00030000
+ 0x00030000
+ 0x00030000
+ 0x00030000
+ 0x00030000
+ 0x00030000
+ 0x00030000
+ 0x00030000
+ 0x00030000
+ 0x00030000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00070000
+ 0x00070000
+ 0x00000000
+ 0x00070000
+ 0x00070000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00038000
+ 0x00038000
+ 0x00038000
+ 0x00038000
+ 0x00003800
+ 0x00003800
+ 0x00003800
+ 0x00003800
+ 0x10000280
+ 0x00000000
+ 0x00111111
+ 0x01231339
+ 0x00000000
+ 0x00000000
+ 0x77ffc081
+ 0x00000505
+ 0x81f1f108
+ 0x07070004
+ 0x00000000
+ 0x016eeeee
+ 0x51451420
+ 0x00514514
+ 0x00514514
+ 0x51451400
+ 0x0000003f
+ 0x000000c6
+ 0x00000000
+ 0x00020000
+ 0x00000100
+ 0x015b000e
+ 0x015b000e
+ 0x00000000
+ 0x00000003
+ 0x000052a3
+ 0x8000188b
+ 0x00000009
+ >;
+ };
+ timing@8 {
+ clock-frequency = <528000000>;
+
+ nvidia,emc-zcal-cnt-long = <0x00000042>;
+ nvidia,emc-auto-cal-interval = <0x001fffff>;
+ nvidia,emc-ctt-term-ctrl = <0x00000802>;
+ nvidia,emc-cfg = <0x73300000>;
+ nvidia,emc-cfg-2 = <0x0000089d>;
+ nvidia,emc-sel-dpd-ctrl = <0x00040008>;
+ nvidia,emc-cfg-dig-dll = <0xe0120069>;
+ nvidia,emc-bgbias-ctl0 = <0x00000000>;
+ nvidia,emc-auto-cal-config = <0x00000000>;
+ nvidia,emc-auto-cal-config2 = <0x00000000>;
+ nvidia,emc-auto-cal-config3 = <0xa1430000>;
+ nvidia,emc-mode-reset = <0x80000941>;
+ nvidia,emc-mode-1 = <0x80100002>;
+ nvidia,emc-mode-2 = <0x80200008>;
+ nvidia,emc-mode-4 = <0x00000000>;
+
+ nvidia,emc-configuration = <
+ 0x00000018
+ 0x00000088
+ 0x00000000
+ 0x00000010
+ 0x00000006
+ 0x00000006
+ 0x00000009
+ 0x00000002
+ 0x0000000d
+ 0x00000006
+ 0x00000006
+ 0x00000002
+ 0x00000002
+ 0x00000000
+ 0x00000003
+ 0x00000003
+ 0x00000006
+ 0x00000002
+ 0x00000000
+ 0x00000001
+ 0x00000009
+ 0x00030000
+ 0x00000003
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000010
+ 0x00000012
+ 0x00000014
+ 0x00000fd6
+ 0x00000000
+ 0x000003f5
+ 0x00000002
+ 0x0000000b
+ 0x00000001
+ 0x00000000
+ 0x00000085
+ 0x00000012
+ 0x00000090
+ 0x00000200
+ 0x00000004
+ 0x00000005
+ 0x00000004
+ 0x00000013
+ 0x00000000
+ 0x00000006
+ 0x00000006
+ 0x00001017
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x104ab098
+ 0xe01200b1
+ 0x00008000
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00054000
+ 0x00054000
+ 0x00000000
+ 0x00054000
+ 0x00054000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x0000000e
+ 0x0000000e
+ 0x0000000e
+ 0x0000000e
+ 0x0000000e
+ 0x0000000e
+ 0x0000000e
+ 0x0000000e
+ 0x100002a0
+ 0x00000000
+ 0x00111111
+ 0x0123133d
+ 0x00000000
+ 0x00000000
+ 0x77ffc085
+ 0x00000505
+ 0x81f1f108
+ 0x07070004
+ 0x00000000
+ 0x016eeeee
+ 0x51451420
+ 0x00514514
+ 0x00514514
+ 0x51451400
+ 0x0606003f
+ 0x00000000
+ 0x00000000
+ 0x00020000
+ 0x00000100
+ 0x0139000e
+ 0x0139000e
+ 0x00000000
+ 0x00000003
+ 0x000042a0
+ 0x80002062
+ 0x0000000a
+ >;
+ };
+ timing@9 {
+ clock-frequency = <600000000>;
+
+ nvidia,emc-zcal-cnt-long = <0x00000042>;
+ nvidia,emc-auto-cal-interval = <0x001fffff>;
+ nvidia,emc-ctt-term-ctrl = <0x00000802>;
+ nvidia,emc-cfg = <0x73300000>;
+ nvidia,emc-cfg-2 = <0x0000089d>;
+ nvidia,emc-sel-dpd-ctrl = <0x00040008>;
+ nvidia,emc-cfg-dig-dll = <0xe00e0069>;
+ nvidia,emc-bgbias-ctl0 = <0x00000000>;
+ nvidia,emc-auto-cal-config = <0x00000000>;
+ nvidia,emc-auto-cal-config2 = <0x00000000>;
+ nvidia,emc-auto-cal-config3 = <0xa1430000>;
+ nvidia,emc-mode-reset = <0x80000b61>;
+ nvidia,emc-mode-1 = <0x80100002>;
+ nvidia,emc-mode-2 = <0x80200010>;
+ nvidia,emc-mode-4 = <0x00000000>;
+
+ nvidia,emc-configuration = <
+ 0x0000001b
+ 0x0000009b
+ 0x00000000
+ 0x00000013
+ 0x00000007
+ 0x00000007
+ 0x0000000b
+ 0x00000003
+ 0x00000010
+ 0x00000007
+ 0x00000007
+ 0x00000002
+ 0x00000002
+ 0x00000000
+ 0x00000005
+ 0x00000005
+ 0x0000000a
+ 0x00000002
+ 0x00000000
+ 0x00000003
+ 0x0000000b
+ 0x00070000
+ 0x00000003
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000002
+ 0x00000012
+ 0x00000016
+ 0x00000018
+ 0x00001208
+ 0x00000000
+ 0x00000482
+ 0x00000002
+ 0x0000000d
+ 0x00000001
+ 0x00000000
+ 0x00000097
+ 0x00000015
+ 0x000000a3
+ 0x00000200
+ 0x00000004
+ 0x00000005
+ 0x00000004
+ 0x00000015
+ 0x00000000
+ 0x00000006
+ 0x00000006
+ 0x00001248
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x104ab098
+ 0xe00e00b1
+ 0x00008000
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00048000
+ 0x00048000
+ 0x00000000
+ 0x00048000
+ 0x00048000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x0000000d
+ 0x0000000d
+ 0x0000000d
+ 0x0000000d
+ 0x0000000d
+ 0x0000000d
+ 0x0000000d
+ 0x0000000d
+ 0x100002a0
+ 0x00000000
+ 0x00111111
+ 0x0121113d
+ 0x00000000
+ 0x00000000
+ 0x77ffc085
+ 0x00000505
+ 0x81f1f108
+ 0x07070004
+ 0x00000000
+ 0x016eeeee
+ 0x51451420
+ 0x00514514
+ 0x00514514
+ 0x51451400
+ 0x0606003f
+ 0x00000000
+ 0x00000000
+ 0x00020000
+ 0x00000100
+ 0x0127000e
+ 0x0127000e
+ 0x00000000
+ 0x00000003
+ 0x000040a0
+ 0x800024a9
+ 0x0000000e
+ >;
+ };
+ timing@10 {
+ clock-frequency = <792000000>;
+
+ nvidia,emc-zcal-cnt-long = <0x00000042>;
+ nvidia,emc-auto-cal-interval = <0x001fffff>;
+ nvidia,emc-ctt-term-ctrl = <0x00000802>;
+ nvidia,emc-cfg = <0x73300000>;
+ nvidia,emc-cfg-2 = <0x0000089d>;
+ nvidia,emc-sel-dpd-ctrl = <0x00040000>;
+ nvidia,emc-cfg-dig-dll = <0xe0070069>;
+ nvidia,emc-bgbias-ctl0 = <0x00000000>;
+ nvidia,emc-auto-cal-config = <0x00000000>;
+ nvidia,emc-auto-cal-config2 = <0x00000000>;
+ nvidia,emc-auto-cal-config3 = <0xa1430000>;
+ nvidia,emc-mode-reset = <0x80000d71>;
+ nvidia,emc-mode-1 = <0x80100002>;
+ nvidia,emc-mode-2 = <0x80200018>;
+ nvidia,emc-mode-4 = <0x00000000>;
+
+ nvidia,emc-configuration = <
+ 0x00000024
+ 0x000000cd
+ 0x00000000
+ 0x00000019
+ 0x0000000a
+ 0x00000008
+ 0x0000000d
+ 0x00000004
+ 0x00000013
+ 0x0000000a
+ 0x0000000a
+ 0x00000003
+ 0x00000002
+ 0x00000000
+ 0x00000006
+ 0x00000006
+ 0x0000000b
+ 0x00000002
+ 0x00000000
+ 0x00000002
+ 0x0000000d
+ 0x00080000
+ 0x00000004
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000001
+ 0x00000014
+ 0x00000018
+ 0x0000001a
+ 0x000017e2
+ 0x00000000
+ 0x000005f8
+ 0x00000003
+ 0x00000011
+ 0x00000001
+ 0x00000000
+ 0x000000c7
+ 0x00000018
+ 0x000000d7
+ 0x00000200
+ 0x00000005
+ 0x00000006
+ 0x00000005
+ 0x0000001d
+ 0x00000000
+ 0x00000008
+ 0x00000008
+ 0x00001822
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x104ab098
+ 0xe00700b1
+ 0x00008000
+ 0x00000008
+ 0x00000008
+ 0x00000008
+ 0x00000008
+ 0x00000008
+ 0x00000008
+ 0x00000008
+ 0x00000008
+ 0x00000008
+ 0x00000008
+ 0x00000008
+ 0x00000008
+ 0x00000008
+ 0x00000008
+ 0x00000008
+ 0x00000008
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00034000
+ 0x00034000
+ 0x00000000
+ 0x00034000
+ 0x00034000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000005
+ 0x00000005
+ 0x00000005
+ 0x00000005
+ 0x00000005
+ 0x00000005
+ 0x00000005
+ 0x00000005
+ 0x00000005
+ 0x00000005
+ 0x00000005
+ 0x00000005
+ 0x00000005
+ 0x00000005
+ 0x00000005
+ 0x00000005
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x0000000a
+ 0x100002a0
+ 0x00000000
+ 0x00111111
+ 0x0120113d
+ 0x00000000
+ 0x00000000
+ 0x77ffc085
+ 0x00000000
+ 0x81f1f108
+ 0x07070004
+ 0x00000000
+ 0x016eeeee
+ 0x61861820
+ 0x00514514
+ 0x00514514
+ 0x61861800
+ 0x0606003f
+ 0x00000000
+ 0x00000000
+ 0x00020000
+ 0x00000100
+ 0x00f7000e
+ 0x00f7000e
+ 0x00000000
+ 0x00000004
+ 0x00004080
+ 0x80003012
+ 0x0000000f
+ >;
+ };
+ timing@11 {
+ clock-frequency = <924000000>;
+
+ nvidia,emc-zcal-cnt-long = <0x0000004c>;
+ nvidia,emc-auto-cal-interval = <0x001fffff>;
+ nvidia,emc-ctt-term-ctrl = <0x00000802>;
+ nvidia,emc-cfg = <0x73300000>;
+ nvidia,emc-cfg-2 = <0x0000089d>;
+ nvidia,emc-sel-dpd-ctrl = <0x00040000>;
+ nvidia,emc-cfg-dig-dll = <0xe0040069>;
+ nvidia,emc-bgbias-ctl0 = <0x00000000>;
+ nvidia,emc-auto-cal-config = <0x00000000>;
+ nvidia,emc-auto-cal-config2 = <0x00000000>;
+ nvidia,emc-auto-cal-config3 = <0xa1430303>;
+ nvidia,emc-mode-reset = <0x80000f15>;
+ nvidia,emc-mode-1 = <0x80100002>;
+ nvidia,emc-mode-2 = <0x80200020>;
+ nvidia,emc-mode-4 = <0x00000000>;
+
+ nvidia,emc-configuration = <
+ 0x0000002b
+ 0x000000f0
+ 0x00000000
+ 0x0000001e
+ 0x0000000b
+ 0x00000009
+ 0x0000000f
+ 0x00000005
+ 0x00000016
+ 0x0000000b
+ 0x0000000b
+ 0x00000004
+ 0x00000002
+ 0x00000000
+ 0x00000007
+ 0x00000007
+ 0x0000000d
+ 0x00000002
+ 0x00000000
+ 0x00000002
+ 0x0000000f
+ 0x000a0000
+ 0x00000004
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000001
+ 0x00000016
+ 0x0000001a
+ 0x0000001c
+ 0x00001be7
+ 0x00000000
+ 0x000006f9
+ 0x00000004
+ 0x00000015
+ 0x00000001
+ 0x00000000
+ 0x000000e7
+ 0x0000001b
+ 0x000000fb
+ 0x00000200
+ 0x00000006
+ 0x00000007
+ 0x00000006
+ 0x00000022
+ 0x00000000
+ 0x0000000a
+ 0x0000000a
+ 0x00001c28
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x104ab898
+ 0xe00400b1
+ 0x00008000
+ 0x007f800a
+ 0x007f800a
+ 0x007f800a
+ 0x007f800a
+ 0x007f800a
+ 0x007f800a
+ 0x007f800a
+ 0x007f800a
+ 0x007f800a
+ 0x007f800a
+ 0x007f800a
+ 0x007f800a
+ 0x007f800a
+ 0x007f800a
+ 0x007f800a
+ 0x007f800a
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x0002c000
+ 0x0002c000
+ 0x00000000
+ 0x0002c000
+ 0x0002c000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000000
+ 0x00000005
+ 0x00000005
+ 0x00000005
+ 0x00000005
+ 0x00000005
+ 0x00000005
+ 0x00000005
+ 0x00000005
+ 0x00000005
+ 0x00000005
+ 0x00000005
+ 0x00000005
+ 0x00000005
+ 0x00000005
+ 0x00000005
+ 0x00000005
+ 0x00000008
+ 0x00000008
+ 0x00000008
+ 0x00000008
+ 0x00000008
+ 0x00000008
+ 0x00000008
+ 0x00000008
+ 0x100002a0
+ 0x00000000
+ 0x00111111
+ 0x0120113d
+ 0x00000000
+ 0x00000000
+ 0x77ffc085
+ 0x00000000
+ 0x81f1f108
+ 0x07070004
+ 0x00000000
+ 0x016eeeee
+ 0x5d75d720
+ 0x00514514
+ 0x00514514
+ 0x5d75d700
+ 0x0606003f
+ 0x00000000
+ 0x00000000
+ 0x00020000
+ 0x00000128
+ 0x00cd000e
+ 0x00cd000e
+ 0x00000000
+ 0x00000004
+ 0x00004080
+ 0x800037ea
+ 0x00000011
+ >;
+ };
+ };
+ };
+
+ memory-controller@0,70019000 {
+ timings@0 {
+ nvidia,ram-code = <3>;
+
+ timing@0 {
+ clock-frequency = <12750000>;
+
+ nvidia,emem-configuration = <
+ 0x40040001 /* MC_EMEM_ARB_CFG */
+ 0x8000000a /* MC_EMEM_ARB_OUTSTANDING_REQ */
+ 0x00000001 /* MC_EMEM_ARB_TIMING_RCD */
+ 0x00000001 /* MC_EMEM_ARB_TIMING_RP */
+ 0x00000002 /* MC_EMEM_ARB_TIMING_RC */
+ 0x00000000 /* MC_EMEM_ARB_TIMING_RAS */
+ 0x00000002 /* MC_EMEM_ARB_TIMING_FAW */
+ 0x00000001 /* MC_EMEM_ARB_TIMING_RRD */
+ 0x00000002 /* MC_EMEM_ARB_TIMING_RAP2PRE */
+ 0x00000008 /* MC_EMEM_ARB_TIMING_WAP2PRE */
+ 0x00000003 /* MC_EMEM_ARB_TIMING_R2R */
+ 0x00000002 /* MC_EMEM_ARB_TIMING_W2W */
+ 0x00000003 /* MC_EMEM_ARB_TIMING_R2W */
+ 0x00000006 /* MC_EMEM_ARB_TIMING_W2R */
+ 0x06030203 /* MC_EMEM_ARB_DA_TURNS */
+ 0x000a0402 /* MC_EMEM_ARB_DA_COVERS */
+ 0x77e30303 /* MC_EMEM_ARB_MISC0 */
+ 0x70000f03 /* MC_EMEM_ARB_MISC1 */
+ 0x001f0000 /* MC_EMEM_ARB_RING1_THROTTLE */
+ >;
+ };
+
+ timing@1 {
+ clock-frequency = <20400000>;
+
+ nvidia,emem-configuration = <
+ 0x40020001
+ 0x80000012
+ 0x00000001
+ 0x00000001
+ 0x00000002
+ 0x00000000
+ 0x00000002
+ 0x00000001
+ 0x00000002
+ 0x00000008
+ 0x00000003
+ 0x00000002
+ 0x00000003
+ 0x00000006
+ 0x06030203
+ 0x000a0402
+ 0x76230303
+ 0x70000f03
+ 0x001f0000
+ >;
+ };
+ timing@2 {
+ clock-frequency = <40800000>;
+
+ nvidia,emem-configuration = <
+ 0xa0000001
+ 0x80000017
+ 0x00000001
+ 0x00000001
+ 0x00000002
+ 0x00000000
+ 0x00000002
+ 0x00000001
+ 0x00000002
+ 0x00000008
+ 0x00000003
+ 0x00000002
+ 0x00000003
+ 0x00000006
+ 0x06030203
+ 0x000a0402
+ 0x74a30303
+ 0x70000f03
+ 0x001f0000
+ >;
+ };
+ timing@3 {
+ clock-frequency = <68000000>;
+
+ nvidia,emem-configuration = <
+ 0x00000001
+ 0x8000001e
+ 0x00000001
+ 0x00000001
+ 0x00000002
+ 0x00000000
+ 0x00000002
+ 0x00000001
+ 0x00000002
+ 0x00000008
+ 0x00000003
+ 0x00000002
+ 0x00000003
+ 0x00000006
+ 0x06030203
+ 0x000a0402
+ 0x74230403
+ 0x70000f03
+ 0x001f0000
+ >;
+ };
+ timing@4 {
+ clock-frequency = <102000000>;
+
+ nvidia,emem-configuration = <
+ 0x08000001
+ 0x80000026
+ 0x00000001
+ 0x00000001
+ 0x00000003
+ 0x00000000
+ 0x00000002
+ 0x00000001
+ 0x00000002
+ 0x00000008
+ 0x00000003
+ 0x00000002
+ 0x00000003
+ 0x00000006
+ 0x06030203
+ 0x000a0403
+ 0x73c30504
+ 0x70000f03
+ 0x001f0000
+ >;
+ };
+ timing@5 {
+ clock-frequency = <204000000>;
+
+ nvidia,emem-configuration = <
+ 0x01000003
+ 0x80000040
+ 0x00000001
+ 0x00000001
+ 0x00000004
+ 0x00000002
+ 0x00000004
+ 0x00000001
+ 0x00000002
+ 0x00000008
+ 0x00000003
+ 0x00000002
+ 0x00000004
+ 0x00000006
+ 0x06040203
+ 0x000a0404
+ 0x73840a05
+ 0x70000f03
+ 0x001f0000
+ >;
+ };
+ timing@6 {
+ clock-frequency = <300000000>;
+
+ nvidia,emem-configuration = <
+ 0x08000004
+ 0x80000040
+ 0x00000001
+ 0x00000002
+ 0x00000007
+ 0x00000004
+ 0x00000005
+ 0x00000001
+ 0x00000002
+ 0x00000007
+ 0x00000002
+ 0x00000002
+ 0x00000004
+ 0x00000006
+ 0x06040202
+ 0x000b0607
+ 0x77450e08
+ 0x70000f03
+ 0x001f0000
+ >;
+ };
+ timing@7 {
+ clock-frequency = <396000000>;
+
+ nvidia,emem-configuration = <
+ 0x0f000005
+ 0x80000040
+ 0x00000001
+ 0x00000002
+ 0x00000009
+ 0x00000005
+ 0x00000007
+ 0x00000001
+ 0x00000002
+ 0x00000008
+ 0x00000002
+ 0x00000002
+ 0x00000004
+ 0x00000006
+ 0x06040202
+ 0x000d0709
+ 0x7586120a
+ 0x70000f03
+ 0x001f0000
+ >;
+ };
+ timing@8 {
+ clock-frequency = <528000000>;
+
+ nvidia,emem-configuration = <
+ 0x0f000007
+ 0x80000040
+ 0x00000002
+ 0x00000003
+ 0x0000000c
+ 0x00000007
+ 0x0000000a
+ 0x00000001
+ 0x00000002
+ 0x00000009
+ 0x00000002
+ 0x00000002
+ 0x00000005
+ 0x00000006
+ 0x06050202
+ 0x0010090c
+ 0x7428180d
+ 0x70000f03
+ 0x001f0000
+ >;
+ };
+ timing@9 {
+ clock-frequency = <600000000>;
+
+ nvidia,emem-configuration = <
+ 0x00000009
+ 0x80000040
+ 0x00000003
+ 0x00000004
+ 0x0000000e
+ 0x00000009
+ 0x0000000b
+ 0x00000001
+ 0x00000003
+ 0x0000000b
+ 0x00000002
+ 0x00000002
+ 0x00000005
+ 0x00000007
+ 0x07050202
+ 0x00130b0e
+ 0x73a91b0f
+ 0x70000f03
+ 0x001f0000
+ >;
+ };
+ timing@10 {
+ clock-frequency = <792000000>;
+
+ nvidia,emem-configuration = <
+ 0x0e00000b
+ 0x80000040
+ 0x00000004
+ 0x00000005
+ 0x00000013
+ 0x0000000c
+ 0x0000000f
+ 0x00000002
+ 0x00000003
+ 0x0000000c
+ 0x00000002
+ 0x00000002
+ 0x00000006
+ 0x00000008
+ 0x08060202
+ 0x00170e13
+ 0x736c2414
+ 0x70000f02
+ 0x001f0000
+ >;
+ };
+ timing@11 {
+ clock-frequency = <924000000>;
+
+ nvidia,emem-configuration = <
+ 0x0e00000d
+ 0x80000040
+ 0x00000005
+ 0x00000006
+ 0x00000016
+ 0x0000000e
+ 0x00000011
+ 0x00000002
+ 0x00000004
+ 0x0000000e
+ 0x00000002
+ 0x00000002
+ 0x00000006
+ 0x00000009
+ 0x09060202
+ 0x001a1016
+ 0x734e2a17
+ 0x70000f02
+ 0x001f0000
+ >;
+ };
+ };
+ };
+};
diff --git a/arch/arm/boot/dts/tegra124-jetson-tk1.dts b/arch/arm/boot/dts/tegra124-jetson-tk1.dts
index 029c9a02..96de17e 100644
--- a/arch/arm/boot/dts/tegra124-jetson-tk1.dts
+++ b/arch/arm/boot/dts/tegra124-jetson-tk1.dts
@@ -3,6 +3,8 @@
#include <dt-bindings/input/input.h>
#include "tegra124.dtsi"

+#include "tegra124-jetson-tk1-emc.dtsi"
+
/ {
model = "NVIDIA Tegra124 Jetson TK1";
compatible = "nvidia,jetson-tk1", "nvidia,tegra124";
--
1.9.3

2014-10-10 12:51:42

by Tomeu Vizoso

Subject: [PATCH 07/10] memory: tegra: Add API needed by the EMC driver

From: Mikko Perttunen <[email protected]>

The EMC driver needs to know the number of external memory devices and also
needs to update the EMEM configuration based on the new rate of the memory bus.

To know how to update the EMEM config, looks up the values of the burst regs in
the DT, for a given timing.

Signed-off-by: Tomeu Vizoso <[email protected]>
---
drivers/memory/tegra/tegra-mc.c | 172 ++++++++++++++++++++++++++++++++++++++++
include/soc/tegra/memory.h | 17 ++++
2 files changed, 189 insertions(+)
create mode 100644 include/soc/tegra/memory.h

diff --git a/drivers/memory/tegra/tegra-mc.c b/drivers/memory/tegra/tegra-mc.c
index 0f0c8be..15ec018 100644
--- a/drivers/memory/tegra/tegra-mc.c
+++ b/drivers/memory/tegra/tegra-mc.c
@@ -16,8 +16,10 @@
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
+#include <linux/sort.h>

#include <soc/tegra/ahb.h>
+#include <soc/tegra/fuse.h>

#include "tegra-mc.h"

@@ -53,8 +55,59 @@
#define MC_EMEM_ARB_CFG_CYCLES_PER_UPDATE_MASK 0x1ff
#define MC_EMEM_ARB_MISC0 0xd8

+#define MC_EMEM_ARB_CFG 0x90
+#define MC_EMEM_ARB_OUTSTANDING_REQ 0x94
+#define MC_EMEM_ARB_TIMING_RCD 0x98
+#define MC_EMEM_ARB_TIMING_RP 0x9c
+#define MC_EMEM_ARB_TIMING_RC 0xa0
+#define MC_EMEM_ARB_TIMING_RAS 0xa4
+#define MC_EMEM_ARB_TIMING_FAW 0xa8
+#define MC_EMEM_ARB_TIMING_RRD 0xac
+#define MC_EMEM_ARB_TIMING_RAP2PRE 0xb0
+#define MC_EMEM_ARB_TIMING_WAP2PRE 0xb4
+#define MC_EMEM_ARB_TIMING_R2R 0xb8
+#define MC_EMEM_ARB_TIMING_W2W 0xbc
+#define MC_EMEM_ARB_TIMING_R2W 0xc0
+#define MC_EMEM_ARB_TIMING_W2R 0xc4
+#define MC_EMEM_ARB_DA_TURNS 0xd0
+#define MC_EMEM_ARB_DA_COVERS 0xd4
+#define MC_EMEM_ARB_MISC0 0xd8
+#define MC_EMEM_ARB_MISC1 0xdc
+#define MC_EMEM_ARB_RING1_THROTTLE 0xe0
+
+#define MC_EMEM_ADR_CFG 0x54
+#define MC_EMEM_ADR_CFG_EMEM_NUMDEV BIT(0)
+
struct tegra_smmu;

+static int t124_mc_burst_regs[] = {
+ MC_EMEM_ARB_CFG,
+ MC_EMEM_ARB_OUTSTANDING_REQ,
+ MC_EMEM_ARB_TIMING_RCD,
+ MC_EMEM_ARB_TIMING_RP,
+ MC_EMEM_ARB_TIMING_RC,
+ MC_EMEM_ARB_TIMING_RAS,
+ MC_EMEM_ARB_TIMING_FAW,
+ MC_EMEM_ARB_TIMING_RRD,
+ MC_EMEM_ARB_TIMING_RAP2PRE,
+ MC_EMEM_ARB_TIMING_WAP2PRE,
+ MC_EMEM_ARB_TIMING_R2R,
+ MC_EMEM_ARB_TIMING_W2W,
+ MC_EMEM_ARB_TIMING_R2W,
+ MC_EMEM_ARB_TIMING_W2R,
+ MC_EMEM_ARB_DA_TURNS,
+ MC_EMEM_ARB_DA_COVERS,
+ MC_EMEM_ARB_MISC0,
+ MC_EMEM_ARB_MISC1,
+ MC_EMEM_ARB_RING1_THROTTLE
+};
+
+struct mc_timing {
+ unsigned long rate;
+
+ u32 mc_burst_data[ARRAY_SIZE(t124_mc_burst_regs)];
+};
+
struct tegra_mc {
struct device *dev;
struct tegra_smmu *smmu;
@@ -64,6 +117,9 @@ struct tegra_mc {

const struct tegra_mc_soc *soc;
unsigned long tick;
+
+ struct mc_timing *timings;
+ unsigned int num_timings;
};

static inline u32 mc_readl(struct tegra_mc *mc, unsigned long offset)
@@ -789,6 +845,37 @@ static const struct of_device_id tegra_mc_of_match[] = {
{ }
};

+void tegra_mc_write_emem_configuration(struct tegra_mc *mc, unsigned long rate)
+{
+ int i;
+ struct mc_timing timing;
+
+ for (i = 0; i < mc->num_timings; ++i) {
+ timing = mc->timings[i];
+
+ if (timing.rate == rate)
+ break;
+ }
+
+ if (i == mc->num_timings)
+ return;
+
+ for (i = 0; i < ARRAY_SIZE(t124_mc_burst_regs); ++i)
+ mc_writel(mc, timing.mc_burst_data[i], t124_mc_burst_regs[i]);
+}
+
+int tegra_mc_get_emem_device_count(struct tegra_mc *mc)
+{
+ u8 dram_count;
+
+ dram_count = mc_readl(mc, MC_EMEM_ADR_CFG);
+ dram_count &= MC_EMEM_ADR_CFG_EMEM_NUMDEV;
+ dram_count++;
+
+ return dram_count;
+}
+
+
/* XXX: provide prototype in public header */
int tegra_mc_set_bandwidth(struct tegra_mc *mc, unsigned int id,
unsigned long bandwidth)
@@ -966,11 +1053,68 @@ static irqreturn_t tegra_mc_irq(int irq, void *data)
return IRQ_HANDLED;
}

+static int load_one_timing_from_dt(struct tegra_mc *mc,
+ struct mc_timing *timing,
+ struct device_node *node)
+{
+ int err;
+ u32 tmp;
+
+ err = of_property_read_u32(node, "clock-frequency", &tmp);
+ if (err) {
+ dev_err(mc->dev,
+ "timing %s: failed to read rate\n", node->name);
+ return err;
+ }
+
+ timing->rate = tmp;
+
+ err = of_property_read_u32_array(node, "nvidia,emem-configuration",
+ timing->mc_burst_data,
+ ARRAY_SIZE(timing->mc_burst_data));
+ if (err) {
+ dev_err(mc->dev,
+ "timing %s: failed to read emc burst data\n",
+ node->name);
+ return err;
+ }
+
+ return 0;
+}
+
+static int load_timings_from_dt(struct tegra_mc *mc,
+ struct device_node *node)
+{
+ struct device_node *child;
+ int child_count = of_get_child_count(node);
+ int i = 0, err;
+
+ mc->timings = devm_kzalloc(mc->dev,
+ sizeof(struct mc_timing) * child_count,
+ GFP_KERNEL);
+ if (!mc->timings)
+ return -ENOMEM;
+
+ mc->num_timings = child_count;
+
+ for_each_child_of_node(node, child) {
+ struct mc_timing *timing = mc->timings + (i++);
+
+ err = load_one_timing_from_dt(mc, timing, child);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
static int tegra_mc_probe(struct platform_device *pdev)
{
const struct of_device_id *match;
struct resource *res;
struct tegra_mc *mc;
+ struct device_node *node;
+ u32 ram_code, node_ram_code;
u32 value;
int err;

@@ -1001,6 +1145,34 @@ static int tegra_mc_probe(struct platform_device *pdev)
return PTR_ERR(mc->clk);
}

+ ram_code = tegra_read_ram_code();
+
+ mc->num_timings = 0;
+
+ for_each_child_of_node(pdev->dev.of_node, node) {
+ if (strcmp(node->name, "timings"))
+ continue;
+
+ err = of_property_read_u32(node, "nvidia,ram-code",
+ &node_ram_code);
+ if (err) {
+ dev_warn(&pdev->dev,
+ "skipping timing without ram-code\n");
+ continue;
+ }
+
+ if (node_ram_code != ram_code)
+ continue;
+
+ err = load_timings_from_dt(mc, node);
+ if (err)
+ return err;
+ break;
+ }
+
+ if (mc->num_timings == 0)
+ dev_warn(&pdev->dev, "no memory timings registered\n");
+
err = tegra_mc_setup_latency_allowance(mc);
if (err < 0) {
dev_err(&pdev->dev, "failed to setup latency allowance: %d\n",
diff --git a/include/soc/tegra/memory.h b/include/soc/tegra/memory.h
new file mode 100644
index 0000000..f307516
--- /dev/null
+++ b/include/soc/tegra/memory.h
@@ -0,0 +1,17 @@
+/*
+ * Copyright (C) 2014 NVIDIA Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __SOC_TEGRA_MEMORY_H__
+#define __SOC_TEGRA_MEMORY_H__
+
+struct tegra_mc;
+
+void tegra_mc_write_emem_configuration(struct tegra_mc *mc, unsigned long rate);
+int tegra_mc_get_emem_device_count(struct tegra_mc *mc);
+
+#endif /* __SOC_TEGRA_MEMORY_H__ */
--
1.9.3

2014-10-10 12:52:01

by Tomeu Vizoso

Subject: [PATCH 08/10] memory: tegra: Add EMC (external memory controller) driver

From: Mikko Perttunen <[email protected]>

Implements functionality needed to change the rate of the memory bus clock.

Signed-off-by: Tomeu Vizoso <[email protected]>
---
drivers/memory/Kconfig | 10 +
drivers/memory/Makefile | 1 -
drivers/memory/tegra/Makefile | 1 +
drivers/memory/tegra/tegra124-emc.c | 1128 +++++++++++++++++++++++++++++++++++
include/soc/tegra/memory.h | 2 +
5 files changed, 1141 insertions(+), 1 deletion(-)
create mode 100644 drivers/memory/tegra/tegra124-emc.c

diff --git a/drivers/memory/Kconfig b/drivers/memory/Kconfig
index 6d91c27..3ba3aef 100644
--- a/drivers/memory/Kconfig
+++ b/drivers/memory/Kconfig
@@ -51,6 +51,16 @@ config MVEBU_DEVBUS
Armada 370 and Armada XP. This controller allows to handle flash
devices such as NOR, NAND, SRAM, and FPGA.

+config TEGRA124_EMC
+ bool "Tegra124 External Memory Controller driver"
+ default y
+ depends on ARCH_TEGRA_124_SOC
+ help
+ This driver is for the External Memory Controller (EMC) found on
+ Tegra124 chips. The EMC controls the external DRAM on the board.
+ This driver is required to change memory timings / clock rate for
+ external memory.
+
config TEGRA20_MC
bool "Tegra20 Memory Controller(MC) driver"
default y
diff --git a/drivers/memory/Makefile b/drivers/memory/Makefile
index 1c932e7..8e5ec8d 100644
--- a/drivers/memory/Makefile
+++ b/drivers/memory/Makefile
@@ -12,5 +12,4 @@ obj-$(CONFIG_FSL_CORENET_CF) += fsl-corenet-cf.o
obj-$(CONFIG_FSL_IFC) += fsl_ifc.o
obj-$(CONFIG_MVEBU_DEVBUS) += mvebu-devbus.o
obj-$(CONFIG_TEGRA20_MC) += tegra20-mc.o
-
obj-$(CONFIG_ARCH_TEGRA) += tegra/
diff --git a/drivers/memory/tegra/Makefile b/drivers/memory/tegra/Makefile
index 51b9e8f..4e84bef 100644
--- a/drivers/memory/tegra/Makefile
+++ b/drivers/memory/tegra/Makefile
@@ -3,3 +3,4 @@ obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += tegra30-mc.o
obj-$(CONFIG_ARCH_TEGRA_114_SOC) += tegra114-mc.o
obj-$(CONFIG_ARCH_TEGRA_124_SOC) += tegra124-mc.o
obj-$(CONFIG_ARCH_TEGRA_132_SOC) += tegra124-mc.o
+obj-$(CONFIG_TEGRA124_EMC) += tegra124-emc.o
diff --git a/drivers/memory/tegra/tegra124-emc.c b/drivers/memory/tegra/tegra124-emc.c
new file mode 100644
index 0000000..e70ca55
--- /dev/null
+++ b/drivers/memory/tegra/tegra124-emc.c
@@ -0,0 +1,1128 @@
+/*
+ * drivers/memory/tegra124-emc.c
+ *
+ * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
+ *
+ * Author:
+ * Mikko Perttunen <[email protected]>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/sort.h>
+#include <linux/string.h>
+
+#include <soc/tegra/fuse.h>
+#include <soc/tegra/memory.h>
+
+#define EMC_FBIO_CFG5 0x104
+#define EMC_FBIO_CFG5_DRAM_TYPE_MASK 0x3
+#define EMC_FBIO_CFG5_DRAM_TYPE_SHIFT 0
+
+#define EMC_INTSTATUS 0x0
+#define EMC_INTSTATUS_CLKCHANGE_COMPLETE BIT(4)
+
+#define EMC_CFG 0xc
+#define EMC_CFG_DRAM_CLKSTOP_PD BIT(31)
+#define EMC_CFG_DRAM_CLKSTOP_SR BIT(30)
+#define EMC_CFG_DRAM_ACPD BIT(29)
+#define EMC_CFG_DYN_SREF BIT(28)
+#define EMC_CFG_PWR_MASK ((0xF << 28) | BIT(18))
+#define EMC_CFG_DSR_VTTGEN_DRV_EN BIT(18)
+
+#define EMC_REFCTRL 0x20
+#define EMC_REFCTRL_DEV_SEL_SHIFT 0
+#define EMC_REFCTRL_ENABLE BIT(31)
+
+#define EMC_TIMING_CONTROL 0x28
+#define EMC_RC 0x2c
+#define EMC_RFC 0x30
+#define EMC_RAS 0x34
+#define EMC_RP 0x38
+#define EMC_R2W 0x3c
+#define EMC_W2R 0x40
+#define EMC_R2P 0x44
+#define EMC_W2P 0x48
+#define EMC_RD_RCD 0x4c
+#define EMC_WR_RCD 0x50
+#define EMC_RRD 0x54
+#define EMC_REXT 0x58
+#define EMC_WDV 0x5c
+#define EMC_QUSE 0x60
+#define EMC_QRST 0x64
+#define EMC_QSAFE 0x68
+#define EMC_RDV 0x6c
+#define EMC_REFRESH 0x70
+#define EMC_BURST_REFRESH_NUM 0x74
+#define EMC_PDEX2WR 0x78
+#define EMC_PDEX2RD 0x7c
+#define EMC_PCHG2PDEN 0x80
+#define EMC_ACT2PDEN 0x84
+#define EMC_AR2PDEN 0x88
+#define EMC_RW2PDEN 0x8c
+#define EMC_TXSR 0x90
+#define EMC_TCKE 0x94
+#define EMC_TFAW 0x98
+#define EMC_TRPAB 0x9c
+#define EMC_TCLKSTABLE 0xa0
+#define EMC_TCLKSTOP 0xa4
+#define EMC_TREFBW 0xa8
+#define EMC_ODT_WRITE 0xb0
+#define EMC_ODT_READ 0xb4
+#define EMC_WEXT 0xb8
+#define EMC_CTT 0xbc
+#define EMC_RFC_SLR 0xc0
+#define EMC_MRS_WAIT_CNT2 0xc4
+
+#define EMC_MRS_WAIT_CNT 0xc8
+#define EMC_MRS_WAIT_CNT_SHORT_WAIT_SHIFT 0
+#define EMC_MRS_WAIT_CNT_SHORT_WAIT_MASK \
+ (0x3FF << EMC_MRS_WAIT_CNT_SHORT_WAIT_SHIFT)
+#define EMC_MRS_WAIT_CNT_LONG_WAIT_SHIFT 16
+#define EMC_MRS_WAIT_CNT_LONG_WAIT_MASK \
+ (0x3FF << EMC_MRS_WAIT_CNT_LONG_WAIT_SHIFT)
+
+#define EMC_MRS 0xcc
+#define EMC_MODE_SET_DLL_RESET BIT(8)
+#define EMC_MODE_SET_LONG_CNT BIT(26)
+#define EMC_EMRS 0xd0
+#define EMC_REF 0xd4
+#define EMC_PRE 0xd8
+
+#define EMC_SELF_REF 0xe0
+#define EMC_SELF_REF_CMD_ENABLED BIT(0)
+#define EMC_SELF_REF_DEV_SEL_SHIFT 30
+
+#define EMC_MRW 0xe8
+
+#define EMC_MRR 0xec
+#define EMC_MRR_MA_SHIFT 16
+#define LPDDR2_MR4_TEMP_SHIFT 0
+
+#define EMC_XM2DQSPADCTRL3 0xf8
+#define EMC_FBIO_SPARE 0x100
+
+#define EMC_FBIO_CFG6 0x114
+#define EMC_EMRS2 0x12c
+#define EMC_MRW2 0x134
+#define EMC_MRW4 0x13c
+#define EMC_EINPUT 0x14c
+#define EMC_EINPUT_DURATION 0x150
+#define EMC_PUTERM_EXTRA 0x154
+#define EMC_TCKESR 0x158
+#define EMC_TPD 0x15c
+
+#define EMC_AUTO_CAL_CONFIG 0x2a4
+#define EMC_AUTO_CAL_CONFIG_AUTO_CAL_START BIT(31)
+#define EMC_AUTO_CAL_INTERVAL 0x2a8
+#define EMC_AUTO_CAL_STATUS 0x2ac
+#define EMC_AUTO_CAL_STATUS_ACTIVE BIT(31)
+#define EMC_STATUS 0x2b4
+#define EMC_STATUS_TIMING_UPDATE_STALLED BIT(23)
+
+#define EMC_CFG_2 0x2b8
+#define EMC_CFG_2_MODE_SHIFT 0
+#define EMC_CFG_2_DIS_STP_OB_CLK_DURING_NON_WR BIT(6)
+
+#define EMC_CFG_DIG_DLL 0x2bc
+#define EMC_CFG_DIG_DLL_PERIOD 0x2c0
+#define EMC_RDV_MASK 0x2cc
+#define EMC_WDV_MASK 0x2d0
+#define EMC_CTT_DURATION 0x2d8
+#define EMC_CTT_TERM_CTRL 0x2dc
+#define EMC_ZCAL_INTERVAL 0x2e0
+#define EMC_ZCAL_WAIT_CNT 0x2e4
+
+#define EMC_ZQ_CAL 0x2ec
+#define EMC_ZQ_CAL_CMD BIT(0)
+#define EMC_ZQ_CAL_LONG BIT(4)
+#define EMC_ZQ_CAL_LONG_CMD_DEV0 \
+ (DRAM_DEV_SEL_0 | EMC_ZQ_CAL_LONG | EMC_ZQ_CAL_CMD)
+#define EMC_ZQ_CAL_LONG_CMD_DEV1 \
+ (DRAM_DEV_SEL_1 | EMC_ZQ_CAL_LONG | EMC_ZQ_CAL_CMD)
+
+#define EMC_XM2CMDPADCTRL 0x2f0
+#define EMC_XM2DQSPADCTRL 0x2f8
+#define EMC_XM2DQSPADCTRL2 0x2fc
+#define EMC_XM2DQSPADCTRL2_RX_FT_REC_ENABLE BIT(0)
+#define EMC_XM2DQSPADCTRL2_VREF_ENABLE BIT(5)
+#define EMC_XM2DQPADCTRL 0x300
+#define EMC_XM2DQPADCTRL2 0x304
+#define EMC_XM2CLKPADCTRL 0x308
+#define EMC_XM2COMPPADCTRL 0x30c
+#define EMC_XM2VTTGENPADCTRL 0x310
+#define EMC_XM2VTTGENPADCTRL2 0x314
+#define EMC_XM2VTTGENPADCTRL3 0x318
+#define EMC_XM2DQSPADCTRL4 0x320
+#define EMC_DLL_XFORM_DQS0 0x328
+#define EMC_DLL_XFORM_DQS1 0x32c
+#define EMC_DLL_XFORM_DQS2 0x330
+#define EMC_DLL_XFORM_DQS3 0x334
+#define EMC_DLL_XFORM_DQS4 0x338
+#define EMC_DLL_XFORM_DQS5 0x33c
+#define EMC_DLL_XFORM_DQS6 0x340
+#define EMC_DLL_XFORM_DQS7 0x344
+#define EMC_DLL_XFORM_QUSE0 0x348
+#define EMC_DLL_XFORM_QUSE1 0x34c
+#define EMC_DLL_XFORM_QUSE2 0x350
+#define EMC_DLL_XFORM_QUSE3 0x354
+#define EMC_DLL_XFORM_QUSE4 0x358
+#define EMC_DLL_XFORM_QUSE5 0x35c
+#define EMC_DLL_XFORM_QUSE6 0x360
+#define EMC_DLL_XFORM_QUSE7 0x364
+#define EMC_DLL_XFORM_DQ0 0x368
+#define EMC_DLL_XFORM_DQ1 0x36c
+#define EMC_DLL_XFORM_DQ2 0x370
+#define EMC_DLL_XFORM_DQ3 0x374
+#define EMC_DLI_TRIM_TXDQS0 0x3a8
+#define EMC_DLI_TRIM_TXDQS1 0x3ac
+#define EMC_DLI_TRIM_TXDQS2 0x3b0
+#define EMC_DLI_TRIM_TXDQS3 0x3b4
+#define EMC_DLI_TRIM_TXDQS4 0x3b8
+#define EMC_DLI_TRIM_TXDQS5 0x3bc
+#define EMC_DLI_TRIM_TXDQS6 0x3c0
+#define EMC_DLI_TRIM_TXDQS7 0x3c4
+#define EMC_STALL_THEN_EXE_AFTER_CLKCHANGE 0x3cc
+#define EMC_SEL_DPD_CTRL 0x3d8
+#define EMC_SEL_DPD_CTRL_DATA_SEL_DPD BIT(8)
+#define EMC_SEL_DPD_CTRL_ODT_SEL_DPD BIT(5)
+#define EMC_SEL_DPD_CTRL_RESET_SEL_DPD BIT(4)
+#define EMC_SEL_DPD_CTRL_CA_SEL_DPD BIT(3)
+#define EMC_SEL_DPD_CTRL_CLK_SEL_DPD BIT(2)
+#define EMC_SEL_DPD_CTRL_DDR3_MASK \
+ ((0xf << 2) | BIT(8))
+#define EMC_SEL_DPD_CTRL_MASK \
+ ((0x3 << 2) | BIT(5) | BIT(8))
+#define EMC_PRE_REFRESH_REQ_CNT 0x3dc
+#define EMC_DYN_SELF_REF_CONTROL 0x3e0
+#define EMC_TXSRDLL 0x3e4
+#define EMC_CCFIFO_ADDR 0x3e8
+#define EMC_CCFIFO_DATA 0x3ec
+#define EMC_CCFIFO_STATUS 0x3f0
+#define EMC_CDB_CNTL_1 0x3f4
+#define EMC_CDB_CNTL_2 0x3f8
+#define EMC_XM2CLKPADCTRL2 0x3fc
+#define EMC_AUTO_CAL_CONFIG2 0x458
+#define EMC_AUTO_CAL_CONFIG3 0x45c
+#define EMC_IBDLY 0x468
+#define EMC_DLL_XFORM_ADDR0 0x46c
+#define EMC_DLL_XFORM_ADDR1 0x470
+#define EMC_DLL_XFORM_ADDR2 0x474
+#define EMC_DSR_VTTGEN_DRV 0x47c
+#define EMC_TXDSRVTTGEN 0x480
+#define EMC_XM2CMDPADCTRL4 0x484
+#define EMC_XM2CMDPADCTRL5 0x488
+#define EMC_DLL_XFORM_DQS8 0x4a0
+#define EMC_DLL_XFORM_DQS9 0x4a4
+#define EMC_DLL_XFORM_DQS10 0x4a8
+#define EMC_DLL_XFORM_DQS11 0x4ac
+#define EMC_DLL_XFORM_DQS12 0x4b0
+#define EMC_DLL_XFORM_DQS13 0x4b4
+#define EMC_DLL_XFORM_DQS14 0x4b8
+#define EMC_DLL_XFORM_DQS15 0x4bc
+#define EMC_DLL_XFORM_QUSE8 0x4c0
+#define EMC_DLL_XFORM_QUSE9 0x4c4
+#define EMC_DLL_XFORM_QUSE10 0x4c8
+#define EMC_DLL_XFORM_QUSE11 0x4cc
+#define EMC_DLL_XFORM_QUSE12 0x4d0
+#define EMC_DLL_XFORM_QUSE13 0x4d4
+#define EMC_DLL_XFORM_QUSE14 0x4d8
+#define EMC_DLL_XFORM_QUSE15 0x4dc
+#define EMC_DLL_XFORM_DQ4 0x4e0
+#define EMC_DLL_XFORM_DQ5 0x4e4
+#define EMC_DLL_XFORM_DQ6 0x4e8
+#define EMC_DLL_XFORM_DQ7 0x4ec
+#define EMC_DLI_TRIM_TXDQS8 0x520
+#define EMC_DLI_TRIM_TXDQS9 0x524
+#define EMC_DLI_TRIM_TXDQS10 0x528
+#define EMC_DLI_TRIM_TXDQS11 0x52c
+#define EMC_DLI_TRIM_TXDQS12 0x530
+#define EMC_DLI_TRIM_TXDQS13 0x534
+#define EMC_DLI_TRIM_TXDQS14 0x538
+#define EMC_DLI_TRIM_TXDQS15 0x53c
+#define EMC_CDB_CNTL_3 0x540
+#define EMC_XM2DQSPADCTRL5 0x544
+#define EMC_XM2DQSPADCTRL6 0x548
+#define EMC_XM2DQPADCTRL3 0x54c
+#define EMC_DLL_XFORM_ADDR3 0x550
+#define EMC_DLL_XFORM_ADDR4 0x554
+#define EMC_DLL_XFORM_ADDR5 0x558
+#define EMC_CFG_PIPE 0x560
+#define EMC_QPOP 0x564
+#define EMC_QUSE_WIDTH 0x568
+#define EMC_PUTERM_WIDTH 0x56c
+#define EMC_BGBIAS_CTL0 0x570
+#define EMC_BGBIAS_CTL0_BIAS0_DSC_E_PWRD_IBIAS_RX BIT(3)
+#define EMC_BGBIAS_CTL0_BIAS0_DSC_E_PWRD_IBIAS_VTTGEN BIT(2)
+#define EMC_BGBIAS_CTL0_BIAS0_DSC_E_PWRD BIT(1)
+#define EMC_PUTERM_ADJ 0x574
+
+#define DRAM_DEV_SEL_ALL 0
+#define DRAM_DEV_SEL_0 (2 << 30)
+#define DRAM_DEV_SEL_1 (1 << 30)
+
+#define EMC_CFG_POWER_FEATURES_MASK \
+ (EMC_CFG_DYN_SREF | EMC_CFG_DRAM_ACPD | EMC_CFG_DRAM_CLKSTOP_SR | \
+ EMC_CFG_DRAM_CLKSTOP_PD | EMC_CFG_DSR_VTTGEN_DRV_EN)
+#define EMC_REFCTRL_DEV_SEL(n) (((n > 1) ? 0 : 2) << EMC_REFCTRL_DEV_SEL_SHIFT)
+#define EMC_DRAM_DEV_SEL(n) ((n > 1) ? DRAM_DEV_SEL_ALL : DRAM_DEV_SEL_0)
+
+#define EMC_STATUS_UPDATE_TIMEOUT 1000
+
+enum emc_dram_type {
+ DRAM_TYPE_DDR3 = 0,
+ DRAM_TYPE_DDR1 = 1,
+ DRAM_TYPE_LPDDR3 = 2,
+ DRAM_TYPE_DDR2 = 3
+};
+
+enum emc_dll_change {
+ DLL_CHANGE_NONE,
+ DLL_CHANGE_ON,
+ DLL_CHANGE_OFF
+};
+
+static int t124_emc_burst_regs[] = {
+ EMC_RC,
+ EMC_RFC,
+ EMC_RFC_SLR,
+ EMC_RAS,
+ EMC_RP,
+ EMC_R2W,
+ EMC_W2R,
+ EMC_R2P,
+ EMC_W2P,
+ EMC_RD_RCD,
+ EMC_WR_RCD,
+ EMC_RRD,
+ EMC_REXT,
+ EMC_WEXT,
+ EMC_WDV,
+ EMC_WDV_MASK,
+ EMC_QUSE,
+ EMC_QUSE_WIDTH,
+ EMC_IBDLY,
+ EMC_EINPUT,
+ EMC_EINPUT_DURATION,
+ EMC_PUTERM_EXTRA,
+ EMC_PUTERM_WIDTH,
+ EMC_PUTERM_ADJ,
+ EMC_CDB_CNTL_1,
+ EMC_CDB_CNTL_2,
+ EMC_CDB_CNTL_3,
+ EMC_QRST,
+ EMC_QSAFE,
+ EMC_RDV,
+ EMC_RDV_MASK,
+ EMC_REFRESH,
+ EMC_BURST_REFRESH_NUM,
+ EMC_PRE_REFRESH_REQ_CNT,
+ EMC_PDEX2WR,
+ EMC_PDEX2RD,
+ EMC_PCHG2PDEN,
+ EMC_ACT2PDEN,
+ EMC_AR2PDEN,
+ EMC_RW2PDEN,
+ EMC_TXSR,
+ EMC_TXSRDLL,
+ EMC_TCKE,
+ EMC_TCKESR,
+ EMC_TPD,
+ EMC_TFAW,
+ EMC_TRPAB,
+ EMC_TCLKSTABLE,
+ EMC_TCLKSTOP,
+ EMC_TREFBW,
+ EMC_FBIO_CFG6,
+ EMC_ODT_WRITE,
+ EMC_ODT_READ,
+ EMC_FBIO_CFG5,
+ EMC_CFG_DIG_DLL,
+ EMC_CFG_DIG_DLL_PERIOD,
+ EMC_DLL_XFORM_DQS0,
+ EMC_DLL_XFORM_DQS1,
+ EMC_DLL_XFORM_DQS2,
+ EMC_DLL_XFORM_DQS3,
+ EMC_DLL_XFORM_DQS4,
+ EMC_DLL_XFORM_DQS5,
+ EMC_DLL_XFORM_DQS6,
+ EMC_DLL_XFORM_DQS7,
+ EMC_DLL_XFORM_DQS8,
+ EMC_DLL_XFORM_DQS9,
+ EMC_DLL_XFORM_DQS10,
+ EMC_DLL_XFORM_DQS11,
+ EMC_DLL_XFORM_DQS12,
+ EMC_DLL_XFORM_DQS13,
+ EMC_DLL_XFORM_DQS14,
+ EMC_DLL_XFORM_DQS15,
+ EMC_DLL_XFORM_QUSE0,
+ EMC_DLL_XFORM_QUSE1,
+ EMC_DLL_XFORM_QUSE2,
+ EMC_DLL_XFORM_QUSE3,
+ EMC_DLL_XFORM_QUSE4,
+ EMC_DLL_XFORM_QUSE5,
+ EMC_DLL_XFORM_QUSE6,
+ EMC_DLL_XFORM_QUSE7,
+ EMC_DLL_XFORM_ADDR0,
+ EMC_DLL_XFORM_ADDR1,
+ EMC_DLL_XFORM_ADDR2,
+ EMC_DLL_XFORM_ADDR3,
+ EMC_DLL_XFORM_ADDR4,
+ EMC_DLL_XFORM_ADDR5,
+ EMC_DLL_XFORM_QUSE8,
+ EMC_DLL_XFORM_QUSE9,
+ EMC_DLL_XFORM_QUSE10,
+ EMC_DLL_XFORM_QUSE11,
+ EMC_DLL_XFORM_QUSE12,
+ EMC_DLL_XFORM_QUSE13,
+ EMC_DLL_XFORM_QUSE14,
+ EMC_DLL_XFORM_QUSE15,
+ EMC_DLI_TRIM_TXDQS0,
+ EMC_DLI_TRIM_TXDQS1,
+ EMC_DLI_TRIM_TXDQS2,
+ EMC_DLI_TRIM_TXDQS3,
+ EMC_DLI_TRIM_TXDQS4,
+ EMC_DLI_TRIM_TXDQS5,
+ EMC_DLI_TRIM_TXDQS6,
+ EMC_DLI_TRIM_TXDQS7,
+ EMC_DLI_TRIM_TXDQS8,
+ EMC_DLI_TRIM_TXDQS9,
+ EMC_DLI_TRIM_TXDQS10,
+ EMC_DLI_TRIM_TXDQS11,
+ EMC_DLI_TRIM_TXDQS12,
+ EMC_DLI_TRIM_TXDQS13,
+ EMC_DLI_TRIM_TXDQS14,
+ EMC_DLI_TRIM_TXDQS15,
+ EMC_DLL_XFORM_DQ0,
+ EMC_DLL_XFORM_DQ1,
+ EMC_DLL_XFORM_DQ2,
+ EMC_DLL_XFORM_DQ3,
+ EMC_DLL_XFORM_DQ4,
+ EMC_DLL_XFORM_DQ5,
+ EMC_DLL_XFORM_DQ6,
+ EMC_DLL_XFORM_DQ7,
+ EMC_XM2CMDPADCTRL,
+ EMC_XM2CMDPADCTRL4,
+ EMC_XM2CMDPADCTRL5,
+ EMC_XM2DQSPADCTRL2,
+ EMC_XM2DQPADCTRL2,
+ EMC_XM2DQPADCTRL3,
+ EMC_XM2CLKPADCTRL,
+ EMC_XM2CLKPADCTRL2,
+ EMC_XM2COMPPADCTRL,
+ EMC_XM2VTTGENPADCTRL,
+ EMC_XM2VTTGENPADCTRL2,
+ EMC_XM2VTTGENPADCTRL3,
+ EMC_XM2DQSPADCTRL3,
+ EMC_XM2DQSPADCTRL4,
+ EMC_XM2DQSPADCTRL5,
+ EMC_XM2DQSPADCTRL6,
+ EMC_DSR_VTTGEN_DRV,
+ EMC_TXDSRVTTGEN,
+ EMC_FBIO_SPARE,
+ EMC_ZCAL_INTERVAL,
+ EMC_ZCAL_WAIT_CNT,
+ EMC_MRS_WAIT_CNT,
+ EMC_MRS_WAIT_CNT2,
+ EMC_CTT,
+ EMC_CTT_DURATION,
+ EMC_CFG_PIPE,
+ EMC_DYN_SELF_REF_CONTROL,
+ EMC_QPOP
+};
+
+struct emc_timing {
+ unsigned long rate;
+
+ /* Store EMC burst data in a union to minimize mistakes. This allows
+ * us to use the same burst data lists as used by the downstream and
+ * ChromeOS kernels.
+ */
+ union {
+ u32 emc_burst_data[ARRAY_SIZE(t124_emc_burst_regs)];
+ struct {
+ u32 __pad0[121];
+ u32 emc_xm2dqspadctrl2;
+ u32 __pad1[15];
+ u32 emc_zcal_interval;
+ u32 __pad2[1];
+ u32 emc_mrs_wait_cnt;
+ };
+ };
+
+ u32 emc_zcal_cnt_long;
+ u32 emc_auto_cal_interval;
+ u32 emc_ctt_term_ctrl;
+ u32 emc_cfg;
+ u32 emc_cfg_2;
+ u32 emc_sel_dpd_ctrl;
+ u32 __emc_cfg_dig_dll;
+ u32 emc_bgbias_ctl0;
+ u32 emc_auto_cal_config2;
+ u32 emc_auto_cal_config3;
+ u32 emc_auto_cal_config;
+ u32 emc_mode_reset;
+ u32 emc_mode_1;
+ u32 emc_mode_2;
+ u32 emc_mode_4;
+};
+
+struct tegra_emc {
+ struct platform_device *pdev;
+
+ struct tegra_mc *mc;
+
+ void __iomem *emc_regs;
+
+ enum emc_dram_type dram_type;
+ u8 dram_num;
+
+ struct emc_timing last_timing;
+ struct emc_timing *timings;
+ unsigned int num_timings;
+
+ bool changing_timing;
+};
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Timing change sequence functions *
+ * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+static void emc_ccfifo_writel(struct tegra_emc *tegra, u32 val,
+ unsigned long offs)
+{
+ writel(val, tegra->emc_regs + EMC_CCFIFO_DATA);
+ writel(offs, tegra->emc_regs + EMC_CCFIFO_ADDR);
+}
+
+static void emc_seq_update_timing(struct tegra_emc *tegra)
+{
+ int i;
+
+ writel(1, tegra->emc_regs + EMC_TIMING_CONTROL);
+
+ for (i = 0; i < EMC_STATUS_UPDATE_TIMEOUT; ++i) {
+ if (!(readl(tegra->emc_regs + EMC_STATUS) &
+ EMC_STATUS_TIMING_UPDATE_STALLED))
+ return;
+ }
+
+ dev_err(&tegra->pdev->dev, "timing update failed\n");
+}
+
+static void emc_seq_disable_auto_cal(struct tegra_emc *tegra)
+{
+ int i;
+
+ writel(0, tegra->emc_regs + EMC_AUTO_CAL_INTERVAL);
+
+ for (i = 0; i < EMC_STATUS_UPDATE_TIMEOUT; ++i) {
+ if (!(readl(tegra->emc_regs + EMC_AUTO_CAL_STATUS) &
+ EMC_AUTO_CAL_STATUS_ACTIVE))
+ return;
+ }
+
+ dev_err(&tegra->pdev->dev, "auto cal disable failed\n");
+}
+
+static void emc_seq_wait_clkchange(struct tegra_emc *tegra)
+{
+ int i;
+
+ for (i = 0; i < EMC_STATUS_UPDATE_TIMEOUT; ++i) {
+ if (readl(tegra->emc_regs + EMC_INTSTATUS) &
+ EMC_INTSTATUS_CLKCHANGE_COMPLETE)
+ return;
+ }
+
+ dev_err(&tegra->pdev->dev, "clkchange failed\n");
+}
+
+static void emc_prepare_timing_change(struct tegra_emc *tegra,
+ const struct emc_timing *timing)
+{
+ u32 val, val2;
+ bool update = false;
+ int pre_wait = 0;
+ int i;
+ enum emc_dll_change dll_change;
+
+ if ((tegra->last_timing.emc_mode_1 & 0x1) == (timing->emc_mode_1 & 1))
+ dll_change = DLL_CHANGE_NONE;
+ else if (timing->emc_mode_1 & 1)
+ dll_change = DLL_CHANGE_ON;
+ else
+ dll_change = DLL_CHANGE_OFF;
+
+ /* Clear CLKCHANGE_COMPLETE interrupts */
+
+ writel(EMC_INTSTATUS_CLKCHANGE_COMPLETE,
+ tegra->emc_regs + EMC_INTSTATUS);
+
+ /* Disable dynamic self-refresh */
+
+ val = readl(tegra->emc_regs + EMC_CFG);
+ if (val & EMC_CFG_PWR_MASK) {
+ val &= ~EMC_CFG_POWER_FEATURES_MASK;
+ writel(val, tegra->emc_regs + EMC_CFG);
+
+ pre_wait = 5;
+ }
+
+ /* Disable SEL_DPD_CTRL for clock change */
+
+ val = readl(tegra->emc_regs + EMC_SEL_DPD_CTRL);
+ if (val & (tegra->dram_type == DRAM_TYPE_DDR3 ?
+ EMC_SEL_DPD_CTRL_DDR3_MASK : EMC_SEL_DPD_CTRL_MASK)) {
+ val &= ~(EMC_SEL_DPD_CTRL_DATA_SEL_DPD |
+ EMC_SEL_DPD_CTRL_ODT_SEL_DPD |
+ EMC_SEL_DPD_CTRL_CA_SEL_DPD |
+ EMC_SEL_DPD_CTRL_CLK_SEL_DPD);
+ if (tegra->dram_type == DRAM_TYPE_DDR3)
+ val &= ~EMC_SEL_DPD_CTRL_RESET_SEL_DPD;
+ writel(val, tegra->emc_regs + EMC_SEL_DPD_CTRL);
+ }
+
+ /* Prepare DQ/DQS for clock change */
+
+ val = readl(tegra->emc_regs + EMC_BGBIAS_CTL0);
+ val2 = tegra->last_timing.emc_bgbias_ctl0;
+ if (!(timing->emc_bgbias_ctl0 &
+ EMC_BGBIAS_CTL0_BIAS0_DSC_E_PWRD_IBIAS_RX) &&
+ (val & EMC_BGBIAS_CTL0_BIAS0_DSC_E_PWRD_IBIAS_RX)) {
+ val2 &= ~EMC_BGBIAS_CTL0_BIAS0_DSC_E_PWRD_IBIAS_RX;
+ update = true;
+ }
+
+ if ((val & EMC_BGBIAS_CTL0_BIAS0_DSC_E_PWRD) ||
+ (val & EMC_BGBIAS_CTL0_BIAS0_DSC_E_PWRD_IBIAS_VTTGEN)) {
+ update = true;
+ }
+
+ if (update) {
+ writel(val2, tegra->emc_regs + EMC_BGBIAS_CTL0);
+ if (pre_wait < 5)
+ pre_wait = 5;
+ }
+
+ update = false;
+ val = readl(tegra->emc_regs + EMC_XM2DQSPADCTRL2);
+ if (timing->emc_xm2dqspadctrl2 & EMC_XM2DQSPADCTRL2_VREF_ENABLE &&
+ !(val & EMC_XM2DQSPADCTRL2_VREF_ENABLE)) {
+ val |= EMC_XM2DQSPADCTRL2_VREF_ENABLE;
+ update = true;
+ }
+
+ if (timing->emc_xm2dqspadctrl2 & EMC_XM2DQSPADCTRL2_RX_FT_REC_ENABLE &&
+ !(val & EMC_XM2DQSPADCTRL2_RX_FT_REC_ENABLE)) {
+ val |= EMC_XM2DQSPADCTRL2_RX_FT_REC_ENABLE;
+ update = true;
+ }
+
+ if (update) {
+ writel(val, tegra->emc_regs + EMC_XM2DQSPADCTRL2);
+ if (pre_wait < 30)
+ pre_wait = 30;
+ }
+
+ /* Wait to settle */
+
+ if (pre_wait) {
+ emc_seq_update_timing(tegra);
+ udelay(pre_wait);
+ }
+
+ /* Program CTT_TERM control */
+
+ if (tegra->last_timing.emc_ctt_term_ctrl != timing->emc_ctt_term_ctrl) {
+ emc_seq_disable_auto_cal(tegra);
+ writel(timing->emc_ctt_term_ctrl,
+ tegra->emc_regs + EMC_CTT_TERM_CTRL);
+ emc_seq_update_timing(tegra);
+ }
+
+ /* Program burst shadow registers */
+
+ for (i = 0; i < ARRAY_SIZE(timing->emc_burst_data); ++i)
+ __raw_writel(timing->emc_burst_data[i],
+ tegra->emc_regs + t124_emc_burst_regs[i]);
+
+ tegra_mc_write_emem_configuration(tegra->mc, timing->rate);
+
+ val = timing->emc_cfg & ~EMC_CFG_POWER_FEATURES_MASK;
+ emc_ccfifo_writel(tegra, val, EMC_CFG);
+
+ /* Program AUTO_CAL_CONFIG */
+
+ if (timing->emc_auto_cal_config2 !=
+ tegra->last_timing.emc_auto_cal_config2)
+ emc_ccfifo_writel(tegra, timing->emc_auto_cal_config2,
+ EMC_AUTO_CAL_CONFIG2);
+ if (timing->emc_auto_cal_config3 !=
+ tegra->last_timing.emc_auto_cal_config3)
+ emc_ccfifo_writel(tegra, timing->emc_auto_cal_config3,
+ EMC_AUTO_CAL_CONFIG3);
+ if (timing->emc_auto_cal_config !=
+ tegra->last_timing.emc_auto_cal_config) {
+ val = timing->emc_auto_cal_config;
+ val &= EMC_AUTO_CAL_CONFIG_AUTO_CAL_START;
+ emc_ccfifo_writel(tegra, val, EMC_AUTO_CAL_CONFIG);
+ }
+
+ /* DDR3: predict MRS long wait count */
+
+ if (tegra->dram_type == DRAM_TYPE_DDR3 && dll_change == DLL_CHANGE_ON) {
+ u32 cnt = 32;
+
+ if (timing->emc_zcal_interval != 0 &&
+ tegra->last_timing.emc_zcal_interval == 0)
+ cnt -= tegra->dram_num * 256;
+
+ val = timing->emc_mrs_wait_cnt
+ & EMC_MRS_WAIT_CNT_SHORT_WAIT_MASK
+ >> EMC_MRS_WAIT_CNT_SHORT_WAIT_SHIFT;
+ if (cnt < val)
+ cnt = val;
+
+ val = timing->emc_mrs_wait_cnt
+ & ~EMC_MRS_WAIT_CNT_LONG_WAIT_MASK;
+ val |= (cnt << EMC_MRS_WAIT_CNT_LONG_WAIT_SHIFT)
+ & EMC_MRS_WAIT_CNT_LONG_WAIT_MASK;
+
+ writel(val, tegra->emc_regs + EMC_MRS_WAIT_CNT);
+ }
+
+ val = timing->emc_cfg_2;
+ val &= ~EMC_CFG_2_DIS_STP_OB_CLK_DURING_NON_WR;
+ emc_ccfifo_writel(tegra, val, EMC_CFG_2);
+
+ /* DDR3: Turn off DLL and enter self-refresh */
+
+ if (tegra->dram_type == DRAM_TYPE_DDR3 && dll_change == DLL_CHANGE_OFF)
+ emc_ccfifo_writel(tegra, timing->emc_mode_1, EMC_EMRS);
+
+ /* Disable refresh controller */
+
+ emc_ccfifo_writel(tegra, EMC_REFCTRL_DEV_SEL(tegra->dram_num),
+ EMC_REFCTRL);
+ if (tegra->dram_type == DRAM_TYPE_DDR3)
+ emc_ccfifo_writel(tegra,
+ EMC_DRAM_DEV_SEL(tegra->dram_num)
+ | EMC_SELF_REF_CMD_ENABLED,
+ EMC_SELF_REF);
+
+ /* Flow control marker */
+
+ emc_ccfifo_writel(tegra, 1, EMC_STALL_THEN_EXE_AFTER_CLKCHANGE);
+
+ /* DDR3: Exit self-refresh */
+
+ if (tegra->dram_type == DRAM_TYPE_DDR3)
+ emc_ccfifo_writel(tegra,
+ EMC_DRAM_DEV_SEL(tegra->dram_num),
+ EMC_SELF_REF);
+ emc_ccfifo_writel(tegra,
+ EMC_REFCTRL_DEV_SEL(tegra->dram_num)
+ | EMC_REFCTRL_ENABLE,
+ EMC_REFCTRL);
+
+ /* Set DRAM mode registers */
+
+ if (tegra->dram_type == DRAM_TYPE_DDR3) {
+ if (timing->emc_mode_1 != tegra->last_timing.emc_mode_1)
+ emc_ccfifo_writel(tegra, timing->emc_mode_1, EMC_EMRS);
+ if (timing->emc_mode_2 != tegra->last_timing.emc_mode_2)
+ emc_ccfifo_writel(tegra, timing->emc_mode_2, EMC_EMRS2);
+
+ if ((timing->emc_mode_reset !=
+ tegra->last_timing.emc_mode_reset) ||
+ dll_change == DLL_CHANGE_ON) {
+ val = timing->emc_mode_reset;
+ if (dll_change == DLL_CHANGE_ON) {
+ val |= EMC_MODE_SET_DLL_RESET;
+ val |= EMC_MODE_SET_LONG_CNT;
+ } else {
+ val &= ~EMC_MODE_SET_DLL_RESET;
+ }
+ emc_ccfifo_writel(tegra, val, EMC_MRS);
+ }
+ } else {
+ if (timing->emc_mode_2 != tegra->last_timing.emc_mode_2)
+ emc_ccfifo_writel(tegra, timing->emc_mode_2, EMC_MRW2);
+ if (timing->emc_mode_1 != tegra->last_timing.emc_mode_1)
+ emc_ccfifo_writel(tegra, timing->emc_mode_1, EMC_MRW);
+ if (timing->emc_mode_4 != tegra->last_timing.emc_mode_4)
+ emc_ccfifo_writel(tegra, timing->emc_mode_4, EMC_MRW4);
+ }
+
+ /* Issue ZCAL command if turning ZCAL on */
+
+ if (timing->emc_zcal_interval != 0 &&
+ tegra->last_timing.emc_zcal_interval == 0) {
+ emc_ccfifo_writel(tegra, EMC_ZQ_CAL_LONG_CMD_DEV0, EMC_ZQ_CAL);
+ if (tegra->dram_num > 1)
+ emc_ccfifo_writel(tegra, EMC_ZQ_CAL_LONG_CMD_DEV1,
+ EMC_ZQ_CAL);
+ }
+
+ /* Write to RO register to remove stall after change */
+
+ emc_ccfifo_writel(tegra, 0, EMC_CCFIFO_STATUS);
+
+ if (timing->emc_cfg_2 & EMC_CFG_2_DIS_STP_OB_CLK_DURING_NON_WR)
+ emc_ccfifo_writel(tegra, timing->emc_cfg_2, EMC_CFG_2);
+
+ /* Disable AUTO_CAL for clock change */
+
+ emc_seq_disable_auto_cal(tegra);
+
+ /* Read register to wait until programming has settled */
+
+ readl(tegra->emc_regs + EMC_INTSTATUS);
+}
+
+static void emc_complete_timing_change(struct tegra_emc *tegra,
+ const struct emc_timing *timing)
+{
+ u32 val;
+
+ /* Wait until the state machine has settled */
+
+ emc_seq_wait_clkchange(tegra);
+
+ /* Restore AUTO_CAL */
+
+ if (timing->emc_ctt_term_ctrl != tegra->last_timing.emc_ctt_term_ctrl)
+ writel(timing->emc_auto_cal_interval,
+ tegra->emc_regs + EMC_AUTO_CAL_INTERVAL);
+
+ /* Restore dynamic self-refresh */
+
+ if (timing->emc_cfg & EMC_CFG_PWR_MASK)
+ writel(timing->emc_cfg, tegra->emc_regs + EMC_CFG);
+
+ /* Set ZCAL wait count */
+
+ writel(timing->emc_zcal_cnt_long, tegra->emc_regs + EMC_ZCAL_WAIT_CNT);
+
+ /* LPDDR3: Turn off BGBIAS if low frequency */
+
+ if (tegra->dram_type == DRAM_TYPE_LPDDR3 &&
+ timing->emc_bgbias_ctl0 &
+ EMC_BGBIAS_CTL0_BIAS0_DSC_E_PWRD_IBIAS_RX) {
+ val = timing->emc_bgbias_ctl0;
+ val |= EMC_BGBIAS_CTL0_BIAS0_DSC_E_PWRD_IBIAS_VTTGEN;
+ val |= EMC_BGBIAS_CTL0_BIAS0_DSC_E_PWRD;
+ writel(val, tegra->emc_regs + EMC_BGBIAS_CTL0);
+ } else {
+ if (tegra->dram_type == DRAM_TYPE_DDR3 &&
+ readl(tegra->emc_regs + EMC_BGBIAS_CTL0) !=
+ timing->emc_bgbias_ctl0) {
+ writel(timing->emc_bgbias_ctl0,
+ tegra->emc_regs + EMC_BGBIAS_CTL0);
+ }
+
+ writel(timing->emc_auto_cal_interval,
+ tegra->emc_regs + EMC_AUTO_CAL_INTERVAL);
+ }
+
+ /* Wait for timing to settle */
+
+ udelay(2);
+
+ /* Reprogram SEL_DPD_CTRL */
+
+ writel(timing->emc_sel_dpd_ctrl, tegra->emc_regs + EMC_SEL_DPD_CTRL);
+ emc_seq_update_timing(tegra);
+
+ tegra->last_timing = *timing;
+}
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Initialization and deinitialization *
+ * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+static void emc_read_current_timing(struct tegra_emc *tegra,
+ struct emc_timing *timing)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(t124_emc_burst_regs); ++i)
+ timing->emc_burst_data[i] =
+ readl(tegra->emc_regs + t124_emc_burst_regs[i]);
+
+ timing->emc_cfg = readl(tegra->emc_regs + EMC_CFG);
+
+ timing->emc_auto_cal_interval = 0;
+ timing->emc_zcal_cnt_long = 0;
+ timing->emc_mode_1 = 0;
+ timing->emc_mode_2 = 0;
+ timing->emc_mode_4 = 0;
+ timing->emc_mode_reset = 0;
+}
+
+static int emc_init(struct tegra_emc *tegra)
+{
+ tegra->dram_type = readl(tegra->emc_regs + EMC_FBIO_CFG5);
+ tegra->dram_type &= EMC_FBIO_CFG5_DRAM_TYPE_MASK;
+ tegra->dram_type >>= EMC_FBIO_CFG5_DRAM_TYPE_SHIFT;
+
+ tegra->dram_num = tegra_mc_get_emem_device_count(tegra->mc);
+
+ emc_read_current_timing(tegra, &tegra->last_timing);
+
+ tegra->changing_timing = false;
+
+ return 0;
+}
+
+static int load_one_timing_from_dt(struct tegra_emc *tegra,
+ struct emc_timing *timing,
+ struct device_node *node)
+{
+ int err;
+ u32 tmp;
+
+ err = of_property_read_u32(node, "clock-frequency", &tmp);
+ if (err) {
+ dev_err(&tegra->pdev->dev,
+ "timing %s: failed to read rate\n", node->name);
+ return err;
+ }
+
+ timing->rate = tmp;
+
+ err = of_property_read_u32_array(node, "nvidia,emc-configuration",
+ timing->emc_burst_data,
+ ARRAY_SIZE(timing->emc_burst_data));
+ if (err) {
+ dev_err(&tegra->pdev->dev,
+ "timing %s: failed to read emc burst data\n",
+ node->name);
+ return err;
+ }
+
+#define EMC_READ_PROP(prop, dtprop) { \
+ err = of_property_read_u32(node, dtprop, &timing->prop); \
+ if (err) { \
+ dev_err(&tegra->pdev->dev, \
+ "timing %s: failed to read " #prop "\n", \
+ node->name); \
+ return err; \
+ } \
+}
+
+ EMC_READ_PROP(emc_zcal_cnt_long, "nvidia,emc-zcal-cnt-long")
+ EMC_READ_PROP(emc_auto_cal_interval, "nvidia,emc-auto-cal-interval")
+ EMC_READ_PROP(emc_ctt_term_ctrl, "nvidia,emc-ctt-term-ctrl")
+ EMC_READ_PROP(emc_cfg, "nvidia,emc-cfg")
+ EMC_READ_PROP(emc_cfg_2, "nvidia,emc-cfg-2")
+ EMC_READ_PROP(emc_sel_dpd_ctrl, "nvidia,emc-sel-dpd-ctrl")
+ EMC_READ_PROP(emc_bgbias_ctl0, "nvidia,emc-bgbias-ctl0")
+ EMC_READ_PROP(emc_auto_cal_config2, "nvidia,emc-auto-cal-config2")
+ EMC_READ_PROP(emc_auto_cal_config3, "nvidia,emc-auto-cal-config3")
+ EMC_READ_PROP(emc_auto_cal_config, "nvidia,emc-auto-cal-config")
+ EMC_READ_PROP(emc_mode_reset, "nvidia,emc-mode-reset")
+ EMC_READ_PROP(emc_mode_1, "nvidia,emc-mode-1")
+ EMC_READ_PROP(emc_mode_2, "nvidia,emc-mode-2")
+ EMC_READ_PROP(emc_mode_4, "nvidia,emc-mode-4")
+
+#undef EMC_READ_PROP
+
+ return 0;
+}
+
+static int cmp_timings(const void *_a, const void *_b)
+{
+ const struct emc_timing *a = _a;
+ const struct emc_timing *b = _b;
+
+ if (a->rate < b->rate)
+ return -1;
+ else if (a->rate == b->rate)
+ return 0;
+ else
+ return 1;
+}
+
+static int load_timings_from_dt(struct tegra_emc *tegra,
+ struct device_node *node)
+{
+ struct device_node *child;
+ int child_count = of_get_child_count(node);
+ int i = 0, err;
+
+ tegra->timings = devm_kzalloc(&tegra->pdev->dev,
+ sizeof(struct emc_timing) * child_count,
+ GFP_KERNEL);
+ if (!tegra->timings)
+ return -ENOMEM;
+
+ tegra->num_timings = child_count;
+
+ for_each_child_of_node(node, child) {
+ struct emc_timing *timing = tegra->timings + (i++);
+
+ err = load_one_timing_from_dt(tegra, timing, child);
+ if (err)
+ return err;
+ }
+
+ sort(tegra->timings, tegra->num_timings, sizeof(struct emc_timing),
+ cmp_timings, NULL);
+
+ return 0;
+}
+
+static const struct of_device_id tegra_emc_of_match[] = {
+ { .compatible = "nvidia,tegra124-emc" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, tegra_emc_of_match);
+
+static struct tegra_emc *emc_instance;
+
+void tegra_emc_prepare_timing_change(unsigned long rate)
+{
+ int i;
+
+ if (!emc_instance)
+ return;
+
+ for (i = 0; i < emc_instance->num_timings; ++i) {
+ if (emc_instance->timings[i].rate == rate)
+ break;
+ }
+
+ if (i == emc_instance->num_timings)
+ return;
+
+ emc_prepare_timing_change(emc_instance, emc_instance->timings + i);
+}
+
+void tegra_emc_complete_timing_change(unsigned long rate)
+{
+ int i;
+
+ if (!emc_instance)
+ return;
+
+ for (i = 0; i < emc_instance->num_timings; ++i) {
+ if (emc_instance->timings[i].rate == rate)
+ break;
+ }
+
+ if (i == emc_instance->num_timings)
+ return;
+
+ emc_complete_timing_change(emc_instance, emc_instance->timings + i);
+}
+
+static int tegra_emc_probe(struct platform_device *pdev)
+{
+ struct tegra_emc *tegra;
+ struct device_node *node;
+ struct platform_device *mc_pdev;
+ struct resource *res;
+ u32 ram_code, node_ram_code;
+ int err;
+
+ tegra = devm_kzalloc(&pdev->dev, sizeof(*tegra), GFP_KERNEL);
+ if (!tegra)
+ return -ENOMEM;
+
+ tegra->pdev = pdev;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ tegra->emc_regs = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(tegra->emc_regs)) {
+ dev_err(&pdev->dev, "failed to map EMC regs\n");
+ return PTR_ERR(tegra->emc_regs);
+ }
+
+ node = of_parse_phandle(pdev->dev.of_node,
+ "nvidia,memory-controller", 0);
+ if (!node) {
+ dev_err(&pdev->dev, "could not get memory controller\n");
+ return -ENOENT;
+ }
+
+ mc_pdev = of_find_device_by_node(node);
+ if (!mc_pdev)
+ return -ENOENT;
+
+ tegra->mc = platform_get_drvdata(mc_pdev);
+ if (!tegra->mc)
+ return -ENOENT;
+
+ of_node_put(node);
+
+ ram_code = tegra_read_ram_code();
+
+ tegra->num_timings = 0;
+
+ for_each_child_of_node(pdev->dev.of_node, node) {
+ if (strcmp(node->name, "timings"))
+ continue;
+
+ err = of_property_read_u32(node, "nvidia,ram-code",
+ &node_ram_code);
+ if (err) {
+ dev_warn(&pdev->dev,
+ "skipping timing without ram-code\n");
+ continue;
+ }
+
+ if (node_ram_code != ram_code)
+ continue;
+
+ err = load_timings_from_dt(tegra, node);
+ if (err)
+ return err;
+ break;
+ }
+
+ if (tegra->num_timings == 0)
+ dev_warn(&pdev->dev, "no memory timings registered\n");
+
+ err = emc_init(tegra);
+ if (err) {
+ dev_err(&pdev->dev, "initialization failed: %d\n", err);
+ return err;
+ }
+
+ platform_set_drvdata(pdev, tegra);
+
+ emc_instance = tegra;
+
+ return 0;
+};
+
+static struct platform_driver tegra_emc_driver = {
+ .probe = tegra_emc_probe,
+ .driver = {
+ .name = "tegra-emc",
+ .of_match_table = tegra_emc_of_match,
+ },
+};
+module_platform_driver(tegra_emc_driver);
+
+MODULE_AUTHOR("Mikko Perttunen <[email protected]>");
+MODULE_DESCRIPTION("Tegra124 EMC memory driver");
+MODULE_LICENSE("GPL v2");
diff --git a/include/soc/tegra/memory.h b/include/soc/tegra/memory.h
index f307516..0e0a2e9 100644
--- a/include/soc/tegra/memory.h
+++ b/include/soc/tegra/memory.h
@@ -13,5 +13,7 @@ struct tegra_mc;

void tegra_mc_write_emem_configuration(struct tegra_mc *mc, unsigned long rate);
int tegra_mc_get_emem_device_count(struct tegra_mc *mc);
+void tegra_emc_prepare_timing_change(unsigned long rate);
+void tegra_emc_complete_timing_change(unsigned long rate);

#endif /* __SOC_TEGRA_MEMORY_H__ */
--
1.9.3

2014-10-10 12:52:13

by Tomeu Vizoso

Subject: [PATCH 09/10] clk: tegra: Add EMC clock driver

From: Mikko Perttunen <[email protected]>

The driver is currently only tested on Tegra124 Jetson TK1, but should
work with other Tegra124 boards, provided that correct EMC tables are
provided through the device tree. Older chip models have differing
timing change sequences, so they are not currently supported.

Signed-off-by: Tomeu Vizoso <[email protected]>
---
drivers/clk/tegra/Makefile | 2 +-
drivers/clk/tegra/clk-emc.c | 449 +++++++++++++++++++++++++++++++++++++++
drivers/clk/tegra/clk-tegra124.c | 2 +-
drivers/clk/tegra/clk.h | 2 +
4 files changed, 453 insertions(+), 2 deletions(-)
create mode 100644 drivers/clk/tegra/clk-emc.c

diff --git a/drivers/clk/tegra/Makefile b/drivers/clk/tegra/Makefile
index f7dfb72..240e5b4 100644
--- a/drivers/clk/tegra/Makefile
+++ b/drivers/clk/tegra/Makefile
@@ -14,4 +14,4 @@ obj-y += clk-tegra-super-gen4.o
obj-$(CONFIG_ARCH_TEGRA_2x_SOC) += clk-tegra20.o
obj-$(CONFIG_ARCH_TEGRA_3x_SOC) += clk-tegra30.o
obj-$(CONFIG_ARCH_TEGRA_114_SOC) += clk-tegra114.o
-obj-$(CONFIG_ARCH_TEGRA_124_SOC) += clk-tegra124.o
+obj-$(CONFIG_ARCH_TEGRA_124_SOC) += clk-tegra124.o clk-emc.o
diff --git a/drivers/clk/tegra/clk-emc.c b/drivers/clk/tegra/clk-emc.c
new file mode 100644
index 0000000..94c5407
--- /dev/null
+++ b/drivers/clk/tegra/clk-emc.c
@@ -0,0 +1,449 @@
+/*
+ * drivers/clk/tegra/clk-emc.c
+ *
+ * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
+ *
+ * Author:
+ * Mikko Perttunen <[email protected]>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/sort.h>
+#include <linux/string.h>
+
+#include <soc/tegra/fuse.h>
+#include <soc/tegra/memory.h>
+
+#define CLK_SOURCE_EMC 0x19c
+#define CLK_SOURCE_EMC_EMC_2X_CLK_DIVISOR_SHIFT 0
+#define CLK_SOURCE_EMC_EMC_2X_CLK_DIVISOR_MASK 0xff
+#define CLK_SOURCE_EMC_EMC_2X_CLK_SRC_SHIFT 29
+#define CLK_SOURCE_EMC_EMC_2X_CLK_SRC_MASK 0x7
+
+const char *emc_parent_clk_names[] = {
+ "pll_m", "pll_c", "pll_p", "clk_m", "pll_m_ud",
+ "pll_c2", "pll_c3", "pll_c_ud"
+};
+
+/* List of clock sources for various parents the EMC clock can have.
+ * When we change the timing to a timing with a parent that has the same
+ * clock source as the current parent, we must first change to a backup
+ * timing that has a different clock source.
+ */
+
+#define EMC_SRC_PLL_M 0
+#define EMC_SRC_PLL_C 1
+#define EMC_SRC_PLL_P 2
+#define EMC_SRC_CLK_M 3
+#define EMC_SRC_PLL_C2 4
+#define EMC_SRC_PLL_C3 5
+const char emc_parent_clk_sources[] = {
+ EMC_SRC_PLL_M, EMC_SRC_PLL_C, EMC_SRC_PLL_P, EMC_SRC_CLK_M,
+ EMC_SRC_PLL_M, EMC_SRC_PLL_C2, EMC_SRC_PLL_C3, EMC_SRC_PLL_C
+};
+
+struct emc_timing {
+ unsigned long rate, parent_rate;
+ u8 parent_index;
+ struct clk *parent;
+ u32 ram_code;
+};
+
+struct tegra_emc {
+ struct clk_hw hw;
+ void __iomem *clk_regs;
+ struct clk *prev_parent;
+ bool changing_timing;
+
+ int num_timings;
+ struct emc_timing *timings;
+};
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Common clock framework callback implementations *
+ * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+unsigned long emc_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
+{
+ struct tegra_emc *tegra = container_of(hw, struct tegra_emc, hw);
+ u32 val, div;
+
+ /* CCF wrongly assumes that the parent won't change during set_rate,
+ * so get the parent rate explicitly.
+ */
+ parent_rate = __clk_get_rate(__clk_get_parent(hw->clk));
+
+ val = readl(tegra->clk_regs + CLK_SOURCE_EMC);
+ div = val & CLK_SOURCE_EMC_EMC_2X_CLK_DIVISOR_MASK;
+
+ return parent_rate / (div + 2) * 2;
+}
+
+/* Rounds up unless no higher rate exists, in which case down. This way is
+ * safer since things have EMC rate floors. Also don't touch parent_rate
+ * since we don't want the CCF to play with our parent clocks.
+ */
+long emc_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *parent_rate)
+{
+ struct tegra_emc *tegra = container_of(hw, struct tegra_emc, hw);
+ u8 ram_code = tegra_read_ram_code();
+ struct emc_timing *timing;
+ int i;
+
+ /* Returning the original rate will lead to a more sensible error
+ * message when emc_set_rate fails.
+ */
+ if (tegra->num_timings == 0)
+ return rate;
+
+ for (i = 0; i < tegra->num_timings; ++i) {
+ timing = tegra->timings + i;
+ if (timing->ram_code != ram_code)
+ continue;
+
+ if (timing->rate >= rate)
+ return timing->rate;
+ }
+
+ return tegra->timings[tegra->num_timings - 1].rate;
+}
+
+u8 emc_get_parent(struct clk_hw *hw)
+{
+ struct tegra_emc *tegra = container_of(hw, struct tegra_emc, hw);
+ u32 val;
+
+ val = readl(tegra->clk_regs + CLK_SOURCE_EMC);
+
+ return (val >> CLK_SOURCE_EMC_EMC_2X_CLK_SRC_SHIFT)
+ & CLK_SOURCE_EMC_EMC_2X_CLK_SRC_MASK;
+}
+
+static int emc_set_timing(struct tegra_emc *tegra, struct emc_timing *timing)
+{
+ int err;
+ u8 div;
+ u32 car_value;
+
+ pr_debug("going to rate %ld prate %ld p %s\n",
+ timing->rate, timing->parent_rate,
+ __clk_get_name(timing->parent));
+
+ if (emc_get_parent(&tegra->hw) == timing->parent_index &&
+ clk_get_rate(timing->parent) != timing->parent_rate) {
+ BUG();
+ return -EINVAL;
+ }
+
+ tegra->changing_timing = true;
+
+ err = clk_set_rate(timing->parent, timing->parent_rate);
+ if (err) {
+ pr_err("cannot change parent %s rate to %ld: %d\n",
+ __clk_get_name(timing->parent),
+ timing->parent_rate, err);
+
+ return err;
+ }
+
+ err = clk_prepare_enable(timing->parent);
+ if (err) {
+ pr_err("cannot enable parent clock: %d\n", err);
+ return err;
+ }
+
+ div = timing->parent_rate / (timing->rate / 2) - 2;
+
+ car_value = 0;
+ car_value |= timing->parent_index <<
+ CLK_SOURCE_EMC_EMC_2X_CLK_SRC_SHIFT;
+ car_value |= div << CLK_SOURCE_EMC_EMC_2X_CLK_DIVISOR_SHIFT;
+
+ tegra_emc_prepare_timing_change(timing->rate);
+
+ writel(car_value, tegra->clk_regs + CLK_SOURCE_EMC);
+
+ tegra_emc_complete_timing_change(timing->rate);
+
+ __clk_reparent(tegra->hw.clk, timing->parent);
+ clk_disable_unprepare(tegra->prev_parent);
+
+ tegra->prev_parent = timing->parent;
+ tegra->changing_timing = false;
+
+ return 0;
+}
+
+/* Get backup timing to use as an intermediate step when a change between
+ * two timings with the same clock source has been requested. First try to
+ * find a timing with a higher clock rate to avoid a rate below any set rate
+ * floors. If that is not possible, find a lower rate.
+ */
+static struct emc_timing *get_backup_timing(struct tegra_emc *tegra,
+ int timing_index)
+{
+ int i;
+ u32 ram_code = tegra_read_ram_code();
+ struct emc_timing *timing;
+
+ for (i = timing_index+1; i < tegra->num_timings; ++i) {
+ timing = tegra->timings + i;
+ if (timing->ram_code != ram_code)
+ continue;
+
+ if (emc_parent_clk_sources[timing->parent_index] !=
+ emc_parent_clk_sources[
+ tegra->timings[timing_index].parent_index])
+ return timing;
+ }
+
+ for (i = timing_index-1; i >= 0; --i) {
+ timing = tegra->timings + i;
+ if (timing->ram_code != ram_code)
+ continue;
+
+ if (emc_parent_clk_sources[timing->parent_index] !=
+ emc_parent_clk_sources[
+ tegra->timings[timing_index].parent_index])
+ return timing;
+ }
+
+ return NULL;
+}
+
+int emc_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct tegra_emc *tegra = container_of(hw, struct tegra_emc, hw);
+ struct emc_timing *timing = NULL;
+ int i, err;
+ u32 ram_code = tegra_read_ram_code();
+
+ /* When emc_set_timing changes the parent rate, CCF will propagate
+ * that downward to us, so ignore any set_rate calls while a rate
+ * change is already going on.
+ */
+ if (tegra->changing_timing)
+ return 0;
+
+ for (i = 0; i < tegra->num_timings; ++i) {
+ if (tegra->timings[i].rate == rate &&
+ tegra->timings[i].ram_code == ram_code) {
+ timing = tegra->timings + i;
+ break;
+ }
+ }
+
+ if (!timing) {
+ pr_err("cannot switch to rate %ld without emc table\n", rate);
+ return -EINVAL;
+ }
+
+ if (emc_parent_clk_sources[emc_get_parent(hw)] ==
+ emc_parent_clk_sources[timing->parent_index] &&
+ clk_get_rate(timing->parent) != timing->parent_rate) {
+ /* Parent clock source not changed but parent rate has changed,
+ * need to temporarily switch to another parent
+ */
+
+ struct emc_timing *backup_timing;
+
+ backup_timing = get_backup_timing(tegra, i);
+ if (!backup_timing) {
+ pr_err("cannot find backup timing\n");
+ return -EINVAL;
+ }
+
+ pr_debug("using %ld as backup rate when going to %ld\n",
+ backup_timing->rate, rate);
+
+ err = emc_set_timing(tegra, backup_timing);
+ if (err) {
+ pr_err("cannot set backup timing: %d\n", err);
+ return err;
+ }
+ }
+
+ return emc_set_timing(tegra, timing);
+}
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Initialization and deinitialization *
+ * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+static int load_one_timing_from_dt(struct tegra_emc *tegra,
+ struct emc_timing *timing,
+ struct device_node *node)
+{
+ int err, i;
+ u32 tmp;
+
+ err = of_property_read_u32(node, "clock-frequency", &tmp);
+ if (err) {
+ pr_err("timing %s: failed to read rate\n", node->full_name);
+ return err;
+ }
+
+ timing->rate = tmp;
+
+ err = of_property_read_u32(node, "nvidia,parent-clock-frequency", &tmp);
+ if (err) {
+ pr_err("timing %s: failed to read parent rate\n",
+ node->full_name);
+ return err;
+ }
+
+ timing->parent_rate = tmp;
+
+ timing->parent = of_clk_get_by_name(node, "emc-parent");
+ if (IS_ERR(timing->parent)) {
+ pr_err("timing %s: failed to get parent clock\n",
+ node->full_name);
+ return PTR_ERR(timing->parent);
+ }
+
+ timing->parent_index = 0xff;
+ for (i = 0; i < ARRAY_SIZE(emc_parent_clk_names); ++i) {
+ if (!strcmp(emc_parent_clk_names[i],
+ __clk_get_name(timing->parent))) {
+ timing->parent_index = i;
+ break;
+ }
+ }
+ if (timing->parent_index == 0xff) {
+ pr_err("timing %s: %s is not a valid parent\n",
+ node->full_name, __clk_get_name(timing->parent));
+ clk_put(timing->parent);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int cmp_timings(const void *_a, const void *_b)
+{
+ const struct emc_timing *a = _a;
+ const struct emc_timing *b = _b;
+
+ if (a->rate < b->rate)
+ return -1;
+ else if (a->rate == b->rate)
+ return 0;
+ else
+ return 1;
+}
+
+static int load_timings_from_dt(struct tegra_emc *tegra,
+ struct device_node *node,
+ u32 ram_code)
+{
+ struct device_node *child;
+ int child_count = of_get_child_count(node);
+ int i = 0, err;
+
+ tegra->timings = kcalloc(child_count, sizeof(struct emc_timing),
+ GFP_KERNEL);
+ if (!tegra->timings)
+ return -ENOMEM;
+
+ tegra->num_timings = child_count;
+
+ for_each_child_of_node(node, child) {
+ struct emc_timing *timing = tegra->timings + (i++);
+
+ err = load_one_timing_from_dt(tegra, timing, child);
+ if (err)
+ return err;
+
+ timing->ram_code = ram_code;
+ }
+
+ sort(tegra->timings, tegra->num_timings, sizeof(struct emc_timing),
+ cmp_timings, NULL);
+
+ return 0;
+}
+
+const struct clk_ops tegra_clk_emc_ops = {
+ .recalc_rate = emc_recalc_rate,
+ .round_rate = emc_round_rate,
+ .set_rate = emc_set_rate,
+ .get_parent = emc_get_parent,
+};
+
+int tegra_emc_init(struct device_node *np, void __iomem *clk_regs)
+{
+ struct tegra_emc *tegra;
+ struct clk *clk;
+ struct clk_init_data init;
+ struct device_node *node;
+ u32 node_ram_code;
+ int err;
+
+ tegra = kcalloc(1, sizeof(*tegra), GFP_KERNEL);
+ if (!tegra)
+ return -ENOMEM;
+
+ tegra->clk_regs = clk_regs;
+
+ tegra->num_timings = 0;
+
+ for_each_child_of_node(np, node) {
+ if (strcmp(node->name, "emc-timings"))
+ continue;
+
+ err = of_property_read_u32(node, "nvidia,ram-code",
+ &node_ram_code);
+ if (err) {
+ pr_warn("skipping timing without ram-code\n");
+ continue;
+ }
+
+ err = load_timings_from_dt(tegra, node, node_ram_code);
+ if (err)
+ return err;
+ break;
+ }
+
+ if (tegra->num_timings == 0)
+ pr_warn("no memory timings registered\n");
+
+ init.name = "emc";
+ init.ops = &tegra_clk_emc_ops;
+ init.flags = 0;
+ init.parent_names = emc_parent_clk_names;
+ init.num_parents = ARRAY_SIZE(emc_parent_clk_names);
+
+ tegra->hw.init = &init;
+
+ clk = clk_register(NULL, &tegra->hw);
+
+ tegra->prev_parent = clk_get_parent_by_index(
+ tegra->hw.clk, emc_get_parent(&tegra->hw));
+ tegra->changing_timing = false;
+
+ /* Allow debugging tools to see the EMC clock */
+ clk_register_clkdev(clk, "emc", "tegra-clk-debug");
+
+ clk_prepare_enable(clk);
+
+ return 0;
+};
diff --git a/drivers/clk/tegra/clk-tegra124.c b/drivers/clk/tegra/clk-tegra124.c
index 9c9b3cb..9bb75dd 100644
--- a/drivers/clk/tegra/clk-tegra124.c
+++ b/drivers/clk/tegra/clk-tegra124.c
@@ -1373,7 +1373,6 @@ static struct tegra_clk_init_table init_table[] __initdata = {
{TEGRA124_CLK_XUSB_HOST_SRC, TEGRA124_CLK_PLL_RE_OUT, 112000000, 0},
{TEGRA124_CLK_SATA, TEGRA124_CLK_PLL_P, 104000000, 0},
{TEGRA124_CLK_SATA_OOB, TEGRA124_CLK_PLL_P, 204000000, 0},
- {TEGRA124_CLK_EMC, TEGRA124_CLK_CLK_MAX, 0, 1},
{TEGRA124_CLK_CCLK_G, TEGRA124_CLK_CLK_MAX, 0, 1},
{TEGRA124_CLK_MSELECT, TEGRA124_CLK_CLK_MAX, 0, 1},
{TEGRA124_CLK_CSITE, TEGRA124_CLK_CLK_MAX, 0, 1},
@@ -1429,6 +1428,7 @@ static void __init tegra124_clock_init(struct device_node *np)
tegra_super_clk_gen4_init(clk_base, pmc_base, tegra124_clks,
&pll_x_params);
tegra_add_of_provider(np);
+ tegra_emc_init(np, clk_base);
tegra_register_devclks(devclks, ARRAY_SIZE(devclks));

tegra_clk_apply_init_table = tegra124_clock_apply_init_table;
diff --git a/drivers/clk/tegra/clk.h b/drivers/clk/tegra/clk.h
index 4e458aa..f3c32cd 100644
--- a/drivers/clk/tegra/clk.h
+++ b/drivers/clk/tegra/clk.h
@@ -623,6 +623,8 @@ void tegra_super_clk_gen4_init(void __iomem *clk_base,
void __iomem *pmc_base, struct tegra_clk *tegra_clks,
struct tegra_clk_pll_params *pll_params);

+int tegra_emc_init(struct device_node *np, void __iomem *clk_regs);
+
void tegra114_clock_tune_cpu_trimmers_high(void);
void tegra114_clock_tune_cpu_trimmers_low(void);
void tegra114_clock_tune_cpu_trimmers_init(void);
--
1.9.3

2014-10-10 12:52:32

by Tomeu Vizoso

Subject: [PATCH 10/10] memory: tegra: Add debugfs entry for getting and setting the EMC rate

Will be very useful when tuning memory scaling.

Signed-off-by: Tomeu Vizoso <[email protected]>
---
drivers/memory/tegra/tegra124-emc.c | 36 ++++++++++++++++++++++++++++++++++++
1 file changed, 36 insertions(+)

diff --git a/drivers/memory/tegra/tegra124-emc.c b/drivers/memory/tegra/tegra124-emc.c
index e70ca55..ed36534 100644
--- a/drivers/memory/tegra/tegra124-emc.c
+++ b/drivers/memory/tegra/tegra124-emc.c
@@ -20,6 +20,7 @@
#include <linux/clk-provider.h>
#include <linux/clk.h>
#include <linux/clkdev.h>
+#include <linux/debugfs.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/of_address.h>
@@ -1034,6 +1035,39 @@ void tegra_emc_complete_timing_change(unsigned long rate)
emc_complete_timing_change(emc_instance, emc_instance->timings + i);
}

+/* * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Debugfs entry *
+ * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+static int emc_debug_rate_get(void *data, u64 *rate)
+{
+ struct clk *c = data;
+
+ *rate = clk_get_rate(c);
+
+ return 0;
+}
+
+static int emc_debug_rate_set(void *data, u64 rate)
+{
+ struct clk *c = data;
+
+ return clk_set_rate(c, rate);
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(emc_debug_rate_fops, emc_debug_rate_get,
+ emc_debug_rate_set, "%lld\n");
+
+void emc_debugfs_init(void)
+{
+ struct dentry *d;
+
+ d = debugfs_create_file("emc_rate", S_IRUGO | S_IWUSR, NULL, clk_get_sys("tegra-clk-debug", "emc"),
+ &emc_debug_rate_fops);
+ if (!d)
+ pr_warn("failed to create debugfs entries\n");
+}
+
static int tegra_emc_probe(struct platform_device *pdev)
{
struct tegra_emc *tegra;
@@ -1111,6 +1145,8 @@ static int tegra_emc_probe(struct platform_device *pdev)

emc_instance = tegra;

+ emc_debugfs_init();
+
return 0;
};

--
1.9.3

2014-10-10 12:53:31

by Tomeu Vizoso

Subject: [PATCH 04/10] of: Add Tegra124 EMC bindings

From: Mikko Perttunen <[email protected]>

Add binding documentation for the nvidia,tegra124-emc device tree node.

Signed-off-by: Mikko Perttunen <[email protected]>
Signed-off-by: Tomeu Vizoso <[email protected]>
---
.../bindings/memory-controllers/tegra-emc.txt | 41 ++++++++++++++++++++++
1 file changed, 41 insertions(+)
create mode 100644 Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt

diff --git a/Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt b/Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt
new file mode 100644
index 0000000..6282c6b
--- /dev/null
+++ b/Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt
@@ -0,0 +1,41 @@
+Tegra124 SoC EMC controller
+
+Required properties :
+- compatible : "nvidia,tegra124-emc".
+- reg : Should contain 1 entry:
+ - EMC register set
+
+The node should contain a "timings@i" subnode for each supported RAM type
+ (see field RAM_CODE in register PMC_STRAPPING_OPT_A)
+Required properties for "timings@i" nodes :
+- nvidia,ram-code : Should contain the value of RAM_CODE this timing set
+ is used for.
+
+Each "timings@i" node should contain "timing@j" subnodes. One "timing@j"
+ node should exist for each supported EMC clock rate.
+Required properties for "timing@j" nodes :
+- clock-frequency : Should contain the memory clock rate.
+- nvidia,parent-clock-frequency : Should contain the rate of the EMC
+ clock's parent clock.
+- clocks : Must contain an entry for each entry in clock-names.
+ See ../clocks/clock-bindings.txt for details.
+- clock-names : Must include the following entries:
+ - emc-parent : EMC's parent clock.
+- The following properties contain EMC timing characterization values:
+ - nvidia,emc-zcal-cnt-long
+ - nvidia,emc-auto-cal-interval
+ - nvidia,emc-ctt-term-ctrl
+ - nvidia,emc-cfg
+ - nvidia,emc-cfg-2
+ - nvidia,emc-sel-dpd-ctrl
+ - nvidia,emc-cfg-dig-dll
+ - nvidia,emc-bgbias-ctl0
+ - nvidia,emc-auto-cal-config
+ - nvidia,emc-auto-cal-config2
+ - nvidia,emc-auto-cal-config3
+ - nvidia,emc-mode-reset
+ - nvidia,emc-mode-1
+ - nvidia,emc-mode-2
+ - nvidia,emc-mode-4
+- nvidia,emc-configuration : EMC timing characterization data written to
+ EMC registers.
--
1.9.3

2014-10-10 13:14:30

by Mark Rutland

Subject: Re: [PATCH 04/10] of: Add Tegra124 EMC bindings

On Fri, Oct 10, 2014 at 01:46:55PM +0100, Tomeu Vizoso wrote:
> From: Mikko Perttunen <[email protected]>
>
> Add binding documentation for the nvidia,tegra124-emc device tree node.
>
> Signed-off-by: Mikko Perttunen <[email protected]>
> Signed-off-by: Tomeu Vizoso <[email protected]>
> ---
> .../bindings/memory-controllers/tegra-emc.txt | 41 ++++++++++++++++++++++
> 1 file changed, 41 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt
>
> diff --git a/Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt b/Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt
> new file mode 100644
> index 0000000..6282c6b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt
> @@ -0,0 +1,41 @@
> +Tegra124 SoC EMC controller
> +
> +Required properties :
> +- compatible : "nvidia,tegra124-emc".
> +- reg : Should contain 1 entry:
> + - EMC register set
> +
> +The node should contain a "timings@i" subnode for each supported RAM type
> + (see field RAM_CODE in register PMC_STRAPPING_OPT_A)
> +Required properties for "timings@i" nodes :
> +- nvidia,ram-code : Should contain the value of RAM_CODE this timing set
> + is used for.
> +
> +Each "timings@i" node should contain "timing@j" subnodes. One "timing@j"
> + node should exist for each supported EMC clock rate.

What do the i and j correspond to?

> +Required properties for "timing@j" nodes :
> +- clock-frequency : Should contain the memory clock rate.
> +- nvidia,parent-clock-frequency : Should contain the rate of the EMC
> + clock's parent clock.

Why are both of these properties necessary?

What is the relationship between the two?

> +- clocks : Must contain an entry for each entry in clock-names.
> + See ../clocks/clock-bindings.txt for details.
> +- clock-names : Must include the following entries:
> + - emc-parent : EMC's parent clock.

Surely the clocks are a property of the EMC, and not the individual
timings?

> +- The following properties contain EMC timing characterization values:
> + - nvidia,emc-zcal-cnt-long
> + - nvidia,emc-auto-cal-interval
> + - nvidia,emc-ctt-term-ctrl
> + - nvidia,emc-cfg
> + - nvidia,emc-cfg-2
> + - nvidia,emc-sel-dpd-ctrl
> + - nvidia,emc-cfg-dig-dll
> + - nvidia,emc-bgbias-ctl0
> + - nvidia,emc-auto-cal-config
> + - nvidia,emc-auto-cal-config2
> + - nvidia,emc-auto-cal-config3
> + - nvidia,emc-mode-reset
> + - nvidia,emc-mode-1
> + - nvidia,emc-mode-2
> + - nvidia,emc-mode-4
> +- nvidia,emc-configuration : EMC timing characterization data written to
> + EMC registers.

I have no idea what any of these are. Perhaps these make sense, but I
cannot tell.

Mark.

2014-10-14 13:36:55

by Mikko Perttunen

Subject: Re: [PATCH 04/10] of: Add Tegra124 EMC bindings

On 10/10/2014 04:14 PM, Mark Rutland wrote:
> On Fri, Oct 10, 2014 at 01:46:55PM +0100, Tomeu Vizoso wrote:
>> From: Mikko Perttunen <[email protected]>
>>
>> Add binding documentation for the nvidia,tegra124-emc device tree node.
>>
>> Signed-off-by: Mikko Perttunen <[email protected]>
>> Signed-off-by: Tomeu Vizoso <[email protected]>
>> ---
>> .../bindings/memory-controllers/tegra-emc.txt | 41 ++++++++++++++++++++++
>> 1 file changed, 41 insertions(+)
>> create mode 100644 Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt
>>
>> diff --git a/Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt b/Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt
>> new file mode 100644
>> index 0000000..6282c6b
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt
>> @@ -0,0 +1,41 @@
>> +Tegra124 SoC EMC controller
>> +
>> +Required properties :
>> +- compatible : "nvidia,tegra124-emc".
>> +- reg : Should contain 1 entry:
>> + - EMC register set
>> +
>> +The node should contain a "timings@i" subnode for each supported RAM type
>> + (see field RAM_CODE in register PMC_STRAPPING_OPT_A)
>> +Required properties for "timings@i" nodes :
>> +- nvidia,ram-code : Should contain the value of RAM_CODE this timing set
>> + is used for.
>> +
>> +Each "timings@i" node should contain "timing@j" subnodes. One "timing@j"
>> + node should exist for each supported EMC clock rate.
>
> What do the i and j correspond to?

Arbitrary integers, preferably starting from 0 and increasing, similar
as with regulator@i etc. Each set of `j's is independent. (Actually,
these values are never used anywhere for anything).

>
>> +Required properties for "timing@j" nodes :
>> +- clock-frequency : Should contain the memory clock rate.
>> +- nvidia,parent-clock-frequency : Should contain the rate of the EMC
>> + clock's parent clock.
>
> Why are both of these properties necessary?
>
> What is the relationship between the two?

There is a certain set of memory timings specified by the hardware
manufacturer for each board type. Each memory timing contains the memory
rate, parent clock and parent clock frequency and many other values
which you mention later.

>
>> +- clocks : Must contain an entry for each entry in clock-names.
>> + See ../clocks/clock-bindings.txt for details.
>> +- clock-names : Must include the following entries:
>> + - emc-parent : EMC's parent clock.
>
> Surely the clocks are a property of the EMC, and not the individual
> timings?

The required parent for each timing is specified by the manufacturer.

>
>> +- The following properties contain EMC timing characterization values:
>> + - nvidia,emc-zcal-cnt-long
>> + - nvidia,emc-auto-cal-interval
>> + - nvidia,emc-ctt-term-ctrl
>> + - nvidia,emc-cfg
>> + - nvidia,emc-cfg-2
>> + - nvidia,emc-sel-dpd-ctrl
>> + - nvidia,emc-cfg-dig-dll
>> + - nvidia,emc-bgbias-ctl0
>> + - nvidia,emc-auto-cal-config
>> + - nvidia,emc-auto-cal-config2
>> + - nvidia,emc-auto-cal-config3
>> + - nvidia,emc-mode-reset
>> + - nvidia,emc-mode-1
>> + - nvidia,emc-mode-2
>> + - nvidia,emc-mode-4
>> +- nvidia,emc-configuration : EMC timing characterization data written to
>> + EMC registers.
>
> I have no idea what any of these are. Perhaps these make sense, but I
> cannot tell.

Magic values specified by the manufacturer. There is some sparse
documentation in the Tegra TRM.

TL;DR: The whole EMC sequence is rather magical and complicated so we
stick to manufacturer-specified values rather than trying guess on our
own. (Although this patch already calculates some stuff that's safe to
calculate and that is manually specified by the downstream NVIDIA kernel.)

>
> Mark.
>

2014-10-14 13:46:16

by Thierry Reding

Subject: Re: [PATCH 04/10] of: Add Tegra124 EMC bindings

On Tue, Oct 14, 2014 at 04:36:45PM +0300, Mikko Perttunen wrote:
> On 10/10/2014 04:14 PM, Mark Rutland wrote:
> >On Fri, Oct 10, 2014 at 01:46:55PM +0100, Tomeu Vizoso wrote:
> >>From: Mikko Perttunen <[email protected]>
> >>
> >>Add binding documentation for the nvidia,tegra124-emc device tree node.
> >>
> >>Signed-off-by: Mikko Perttunen <[email protected]>
> >>Signed-off-by: Tomeu Vizoso <[email protected]>
> >>---
> >> .../bindings/memory-controllers/tegra-emc.txt | 41 ++++++++++++++++++++++
> >> 1 file changed, 41 insertions(+)
> >> create mode 100644 Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt
> >>
> >>diff --git a/Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt b/Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt
> >>new file mode 100644
> >>index 0000000..6282c6b
> >>--- /dev/null
> >>+++ b/Documentation/devicetree/bindings/memory-controllers/tegra-emc.txt
> >>@@ -0,0 +1,41 @@
> >>+Tegra124 SoC EMC controller
> >>+
> >>+Required properties :
> >>+- compatible : "nvidia,tegra124-emc".
> >>+- reg : Should contain 1 entry:
> >>+ - EMC register set
> >>+
> >>+The node should contain a "timings@i" subnode for each supported RAM type
> >>+ (see field RAM_CODE in register PMC_STRAPPING_OPT_A)
> >>+Required properties for "timings@i" nodes :
> >>+- nvidia,ram-code : Should contain the value of RAM_CODE this timing set
> >>+ is used for.
> >>+
> >>+Each "timings@i" node should contain "timing@j" subnodes. One "timing@j"
> >>+ node should exist for each supported EMC clock rate.
> >
> >What do the i and j correspond to?
>
> Arbitrary integers, preferably starting from 0 and increasing, similar as
> with regulator@i etc. Each set of `j's is independent. (Actually, these
> values are never used anywhere for anything).

Perhaps they should be used, then? Typically the unit-address matches
the (first) value of the reg property. Perhaps in this case it would
make sense to make it match the value in clock-frequency for j, and i
could correspond to the value of the nvidia,ram-code property.

Thierry

Attachments: