This set adds support to the internal eMMC storage found on the Samsung
Galaxy A8 (2018) (jackpotlte). It seems to work reliably for reads and
writes. postmarketOS is able to boot off of it.
The original kernel from samsung sets pinctrl options at runtime
changing pin-drv levels automatically. Without this code, mmc seems to
work the best with the lv3 setting on jackpotlte.
David Virag (5):
dt-bindings: clock: Add bindings for Exynos7885 CMU_FSYS
dt-bindings: clock: Add indices for Exynos7885 TREX clocks
clk: samsung: exynos7885: Implement CMU_FSYS domain
clk: samsung: exynos7885: Add TREX clocks
arm64: dts: exynos: Add internal eMMC support to jackpotlte
.../clock/samsung,exynos7885-clock.yaml | 27 +++
.../boot/dts/exynos/exynos7885-jackpotlte.dts | 20 ++
arch/arm64/boot/dts/exynos/exynos7885.dtsi | 32 +++
drivers/clk/samsung/clk-exynos7885.c | 207 +++++++++++++++++-
include/dt-bindings/clock/exynos7885.h | 54 ++++-
5 files changed, 324 insertions(+), 16 deletions(-)
--
2.36.1
TREX D Core and P core clocks seem to be related to the BTS (Bus Traffic
Shaper) inside the Exynos7885 SoC, and are needed for the SoC to
function correctly.
Add indices for these clocks.
Signed-off-by: David Virag <[email protected]>
---
include/dt-bindings/clock/exynos7885.h | 23 +++++++++++++++--------
1 file changed, 15 insertions(+), 8 deletions(-)
diff --git a/include/dt-bindings/clock/exynos7885.h b/include/dt-bindings/clock/exynos7885.h
index d2e1483f93e4..8256e7430b63 100644
--- a/include/dt-bindings/clock/exynos7885.h
+++ b/include/dt-bindings/clock/exynos7885.h
@@ -72,14 +72,21 @@
#define TOP_NR_CLK 61
/* CMU_CORE */
-#define CLK_MOUT_CORE_BUS_USER 1
-#define CLK_MOUT_CORE_CCI_USER 2
-#define CLK_MOUT_CORE_G3D_USER 3
-#define CLK_MOUT_CORE_GIC 4
-#define CLK_DOUT_CORE_BUSP 5
-#define CLK_GOUT_CCI_ACLK 6
-#define CLK_GOUT_GIC400_CLK 7
-#define CORE_NR_CLK 8
+#define CLK_MOUT_CORE_BUS_USER 1
+#define CLK_MOUT_CORE_CCI_USER 2
+#define CLK_MOUT_CORE_G3D_USER 3
+#define CLK_MOUT_CORE_GIC 4
+#define CLK_DOUT_CORE_BUSP 5
+#define CLK_GOUT_CCI_ACLK 6
+#define CLK_GOUT_GIC400_CLK 7
+#define CLK_GOUT_TREX_D_CORE_ACLK 8
+#define CLK_GOUT_TREX_D_CORE_GCLK 9
+#define CLK_GOUT_TREX_D_CORE_PCLK 10
+#define CLK_GOUT_TREX_P_CORE_ACLK_P_CORE 11
+#define CLK_GOUT_TREX_P_CORE_CCLK_P_CORE 12
+#define CLK_GOUT_TREX_P_CORE_PCLK 13
+#define CLK_GOUT_TREX_P_CORE_PCLK_P_CORE 14
+#define CORE_NR_CLK 15
/* CMU_PERI */
#define CLK_MOUT_PERI_BUS_USER 1
--
2.36.1
CMU_FSYS clock domain provides clocks for FSYS IP-core providing clocks
for all MMC devices on Exynos7885, and USB30DRD.
This patch includes:
- Bus clocks in CMU_TOP needed for CMU_FSYS
- All clocks in CMU_FSYS needed for MMC devices
Signed-off-by: David Virag <[email protected]>
---
drivers/clk/samsung/clk-exynos7885.c | 158 +++++++++++++++++++++++++++
1 file changed, 158 insertions(+)
diff --git a/drivers/clk/samsung/clk-exynos7885.c b/drivers/clk/samsung/clk-exynos7885.c
index 368c50badd15..302937025409 100644
--- a/drivers/clk/samsung/clk-exynos7885.c
+++ b/drivers/clk/samsung/clk-exynos7885.c
@@ -27,6 +27,11 @@
#define CLK_CON_MUX_MUX_CLKCMU_CORE_BUS 0x1014
#define CLK_CON_MUX_MUX_CLKCMU_CORE_CCI 0x1018
#define CLK_CON_MUX_MUX_CLKCMU_CORE_G3D 0x101c
+#define CLK_CON_MUX_MUX_CLKCMU_FSYS_BUS 0x1028
+#define CLK_CON_MUX_MUX_CLKCMU_FSYS_MMC_CARD 0x102c
+#define CLK_CON_MUX_MUX_CLKCMU_FSYS_MMC_EMBD 0x1030
+#define CLK_CON_MUX_MUX_CLKCMU_FSYS_MMC_SDIO 0x1034
+#define CLK_CON_MUX_MUX_CLKCMU_FSYS_USB30DRD 0x1038
#define CLK_CON_MUX_MUX_CLKCMU_PERI_BUS 0x1058
#define CLK_CON_MUX_MUX_CLKCMU_PERI_SPI0 0x105c
#define CLK_CON_MUX_MUX_CLKCMU_PERI_SPI1 0x1060
@@ -39,6 +44,11 @@
#define CLK_CON_DIV_CLKCMU_CORE_BUS 0x181c
#define CLK_CON_DIV_CLKCMU_CORE_CCI 0x1820
#define CLK_CON_DIV_CLKCMU_CORE_G3D 0x1824
+#define CLK_CON_DIV_CLKCMU_FSYS_BUS 0x1844
+#define CLK_CON_DIV_CLKCMU_FSYS_MMC_CARD 0x1848
+#define CLK_CON_DIV_CLKCMU_FSYS_MMC_EMBD 0x184c
+#define CLK_CON_DIV_CLKCMU_FSYS_MMC_SDIO 0x1850
+#define CLK_CON_DIV_CLKCMU_FSYS_USB30DRD 0x1854
#define CLK_CON_DIV_CLKCMU_PERI_BUS 0x1874
#define CLK_CON_DIV_CLKCMU_PERI_SPI0 0x1878
#define CLK_CON_DIV_CLKCMU_PERI_SPI1 0x187c
@@ -59,6 +69,11 @@
#define CLK_CON_GAT_GATE_CLKCMU_CORE_BUS 0x201c
#define CLK_CON_GAT_GATE_CLKCMU_CORE_CCI 0x2020
#define CLK_CON_GAT_GATE_CLKCMU_CORE_G3D 0x2024
+#define CLK_CON_GAT_GATE_CLKCMU_FSYS_BUS 0x2044
+#define CLK_CON_GAT_GATE_CLKCMU_FSYS_MMC_CARD 0x2048
+#define CLK_CON_GAT_GATE_CLKCMU_FSYS_MMC_EMBD 0x204c
+#define CLK_CON_GAT_GATE_CLKCMU_FSYS_MMC_SDIO 0x2050
+#define CLK_CON_GAT_GATE_CLKCMU_FSYS_USB30DRD 0x2054
#define CLK_CON_GAT_GATE_CLKCMU_PERI_BUS 0x207c
#define CLK_CON_GAT_GATE_CLKCMU_PERI_SPI0 0x2080
#define CLK_CON_GAT_GATE_CLKCMU_PERI_SPI1 0x2084
@@ -76,6 +91,11 @@ static const unsigned long top_clk_regs[] __initconst = {
CLK_CON_MUX_MUX_CLKCMU_CORE_BUS,
CLK_CON_MUX_MUX_CLKCMU_CORE_CCI,
CLK_CON_MUX_MUX_CLKCMU_CORE_G3D,
+ CLK_CON_MUX_MUX_CLKCMU_FSYS_BUS,
+ CLK_CON_MUX_MUX_CLKCMU_FSYS_MMC_CARD,
+ CLK_CON_MUX_MUX_CLKCMU_FSYS_MMC_EMBD,
+ CLK_CON_MUX_MUX_CLKCMU_FSYS_MMC_SDIO,
+ CLK_CON_MUX_MUX_CLKCMU_FSYS_USB30DRD,
CLK_CON_MUX_MUX_CLKCMU_PERI_BUS,
CLK_CON_MUX_MUX_CLKCMU_PERI_SPI0,
CLK_CON_MUX_MUX_CLKCMU_PERI_SPI1,
@@ -88,6 +108,11 @@ static const unsigned long top_clk_regs[] __initconst = {
CLK_CON_DIV_CLKCMU_CORE_BUS,
CLK_CON_DIV_CLKCMU_CORE_CCI,
CLK_CON_DIV_CLKCMU_CORE_G3D,
+ CLK_CON_DIV_CLKCMU_FSYS_BUS,
+ CLK_CON_DIV_CLKCMU_FSYS_MMC_CARD,
+ CLK_CON_DIV_CLKCMU_FSYS_MMC_EMBD,
+ CLK_CON_DIV_CLKCMU_FSYS_MMC_SDIO,
+ CLK_CON_DIV_CLKCMU_FSYS_USB30DRD,
CLK_CON_DIV_CLKCMU_PERI_BUS,
CLK_CON_DIV_CLKCMU_PERI_SPI0,
CLK_CON_DIV_CLKCMU_PERI_SPI1,
@@ -108,6 +133,11 @@ static const unsigned long top_clk_regs[] __initconst = {
CLK_CON_GAT_GATE_CLKCMU_CORE_BUS,
CLK_CON_GAT_GATE_CLKCMU_CORE_CCI,
CLK_CON_GAT_GATE_CLKCMU_CORE_G3D,
+ CLK_CON_GAT_GATE_CLKCMU_FSYS_BUS,
+ CLK_CON_GAT_GATE_CLKCMU_FSYS_MMC_CARD,
+ CLK_CON_GAT_GATE_CLKCMU_FSYS_MMC_EMBD,
+ CLK_CON_GAT_GATE_CLKCMU_FSYS_MMC_SDIO,
+ CLK_CON_GAT_GATE_CLKCMU_FSYS_USB30DRD,
CLK_CON_GAT_GATE_CLKCMU_PERI_BUS,
CLK_CON_GAT_GATE_CLKCMU_PERI_SPI0,
CLK_CON_GAT_GATE_CLKCMU_PERI_SPI1,
@@ -146,6 +176,13 @@ PNAME(mout_peri_usi0_p) = { "oscclk", "dout_shared0_div4" };
PNAME(mout_peri_usi1_p) = { "oscclk", "dout_shared0_div4" };
PNAME(mout_peri_usi2_p) = { "oscclk", "dout_shared0_div4" };
+/* List of parent clocks for Muxes in CMU_TOP: for CMU_FSYS */
+PNAME(mout_fsys_bus_p) = { "dout_shared0_div2", "dout_shared1_div2" };
+PNAME(mout_fsys_mmc_card_p) = { "dout_shared0_div2", "dout_shared1_div2" };
+PNAME(mout_fsys_mmc_embd_p) = { "dout_shared0_div2", "dout_shared1_div2" };
+PNAME(mout_fsys_mmc_sdio_p) = { "dout_shared0_div2", "dout_shared1_div2" };
+PNAME(mout_fsys_usb30drd_p) = { "dout_shared0_div4", "dout_shared1_div4" };
+
static const struct samsung_mux_clock top_mux_clks[] __initconst = {
/* CORE */
MUX(CLK_MOUT_CORE_BUS, "mout_core_bus", mout_core_bus_p,
@@ -174,6 +211,18 @@ static const struct samsung_mux_clock top_mux_clks[] __initconst = {
CLK_CON_MUX_MUX_CLKCMU_PERI_USI1, 0, 1),
MUX(CLK_MOUT_PERI_USI2, "mout_peri_usi2", mout_peri_usi2_p,
CLK_CON_MUX_MUX_CLKCMU_PERI_USI2, 0, 1),
+
+ /* FSYS */
+ MUX(CLK_MOUT_FSYS_BUS, "mout_fsys_bus", mout_fsys_bus_p,
+ CLK_CON_MUX_MUX_CLKCMU_FSYS_BUS, 0, 1),
+ MUX(CLK_MOUT_FSYS_MMC_CARD, "mout_fsys_mmc_card", mout_fsys_mmc_card_p,
+ CLK_CON_MUX_MUX_CLKCMU_FSYS_MMC_CARD, 0, 1),
+ MUX(CLK_MOUT_FSYS_MMC_EMBD, "mout_fsys_mmc_embd", mout_fsys_mmc_embd_p,
+ CLK_CON_MUX_MUX_CLKCMU_FSYS_MMC_EMBD, 0, 1),
+ MUX(CLK_MOUT_FSYS_MMC_SDIO, "mout_fsys_mmc_sdio", mout_fsys_mmc_sdio_p,
+ CLK_CON_MUX_MUX_CLKCMU_FSYS_MMC_SDIO, 0, 1),
+ MUX(CLK_MOUT_FSYS_USB30DRD, "mout_fsys_usb30drd", mout_fsys_usb30drd_p,
+ CLK_CON_MUX_MUX_CLKCMU_FSYS_USB30DRD, 0, 1),
};
static const struct samsung_div_clock top_div_clks[] __initconst = {
@@ -220,6 +269,18 @@ static const struct samsung_div_clock top_div_clks[] __initconst = {
CLK_CON_DIV_CLKCMU_PERI_USI1, 0, 4),
DIV(CLK_DOUT_PERI_USI2, "dout_peri_usi2", "gout_peri_usi2",
CLK_CON_DIV_CLKCMU_PERI_USI2, 0, 4),
+
+ /* FSYS */
+ DIV(CLK_DOUT_FSYS_BUS, "dout_fsys_bus", "gout_fsys_bus",
+ CLK_CON_DIV_CLKCMU_FSYS_BUS, 0, 4),
+ DIV(CLK_DOUT_FSYS_MMC_CARD, "dout_fsys_mmc_card", "gout_fsys_mmc_card",
+ CLK_CON_DIV_CLKCMU_FSYS_MMC_CARD, 0, 9),
+ DIV(CLK_DOUT_FSYS_MMC_EMBD, "dout_fsys_mmc_embd", "gout_fsys_mmc_embd",
+ CLK_CON_DIV_CLKCMU_FSYS_MMC_EMBD, 0, 9),
+ DIV(CLK_DOUT_FSYS_MMC_SDIO, "dout_fsys_mmc_sdio", "gout_fsys_mmc_sdio",
+ CLK_CON_DIV_CLKCMU_FSYS_MMC_SDIO, 0, 9),
+ DIV(CLK_DOUT_FSYS_USB30DRD, "dout_fsys_usb30drd", "gout_fsys_usb30drd",
+ CLK_CON_DIV_CLKCMU_FSYS_USB30DRD, 0, 4),
};
static const struct samsung_gate_clock top_gate_clks[] __initconst = {
@@ -250,6 +311,18 @@ static const struct samsung_gate_clock top_gate_clks[] __initconst = {
CLK_CON_GAT_GATE_CLKCMU_PERI_USI1, 21, 0, 0),
GATE(CLK_GOUT_PERI_USI2, "gout_peri_usi2", "mout_peri_usi2",
CLK_CON_GAT_GATE_CLKCMU_PERI_USI2, 21, 0, 0),
+
+ /* FSYS */
+ GATE(CLK_GOUT_FSYS_BUS, "gout_fsys_bus", "mout_fsys_bus",
+ CLK_CON_GAT_GATE_CLKCMU_FSYS_BUS, 21, 0, 0),
+ GATE(CLK_GOUT_FSYS_MMC_CARD, "gout_fsys_mmc_card", "mout_fsys_mmc_card",
+ CLK_CON_GAT_GATE_CLKCMU_FSYS_MMC_CARD, 21, 0, 0),
+ GATE(CLK_GOUT_FSYS_MMC_EMBD, "gout_fsys_mmc_embd", "mout_fsys_mmc_embd",
+ CLK_CON_GAT_GATE_CLKCMU_FSYS_MMC_EMBD, 21, 0, 0),
+ GATE(CLK_GOUT_FSYS_MMC_SDIO, "gout_fsys_mmc_sdio", "mout_fsys_mmc_sdio",
+ CLK_CON_GAT_GATE_CLKCMU_FSYS_MMC_SDIO, 21, 0, 0),
+ GATE(CLK_GOUT_FSYS_USB30DRD, "gout_fsys_usb30drd", "mout_fsys_usb30drd",
+ CLK_CON_GAT_GATE_CLKCMU_FSYS_USB30DRD, 21, 0, 0),
};
static const struct samsung_cmu_info top_cmu_info __initconst = {
@@ -560,6 +633,88 @@ static const struct samsung_cmu_info core_cmu_info __initconst = {
.clk_name = "dout_core_bus",
};
+/* ---- CMU_FSYS ------------------------------------------------------------ */
+
+/* Register Offset definitions for CMU_FSYS (0x13400000) */
+#define PLL_CON0_MUX_CLKCMU_FSYS_BUS_USER 0x0100
+#define PLL_CON0_MUX_CLKCMU_FSYS_MMC_CARD_USER 0x0120
+#define PLL_CON0_MUX_CLKCMU_FSYS_MMC_EMBD_USER 0x0140
+#define PLL_CON0_MUX_CLKCMU_FSYS_MMC_SDIO_USER 0x0160
+#define PLL_CON0_MUX_CLKCMU_FSYS_USB30DRD_USER 0x0180
+#define CLK_CON_GAT_GOUT_FSYS_MMC_CARD_I_ACLK 0x2030
+#define CLK_CON_GAT_GOUT_FSYS_MMC_CARD_SDCLKIN 0x2034
+#define CLK_CON_GAT_GOUT_FSYS_MMC_EMBD_I_ACLK 0x2038
+#define CLK_CON_GAT_GOUT_FSYS_MMC_EMBD_SDCLKIN 0x203c
+#define CLK_CON_GAT_GOUT_FSYS_MMC_SDIO_I_ACLK 0x2040
+#define CLK_CON_GAT_GOUT_FSYS_MMC_SDIO_SDCLKIN 0x2044
+
+static const unsigned long fsys_clk_regs[] __initconst = {
+ PLL_CON0_MUX_CLKCMU_FSYS_BUS_USER,
+ PLL_CON0_MUX_CLKCMU_FSYS_MMC_CARD_USER,
+ PLL_CON0_MUX_CLKCMU_FSYS_MMC_EMBD_USER,
+ PLL_CON0_MUX_CLKCMU_FSYS_MMC_SDIO_USER,
+ PLL_CON0_MUX_CLKCMU_FSYS_USB30DRD_USER,
+ CLK_CON_GAT_GOUT_FSYS_MMC_CARD_I_ACLK,
+ CLK_CON_GAT_GOUT_FSYS_MMC_CARD_SDCLKIN,
+ CLK_CON_GAT_GOUT_FSYS_MMC_EMBD_I_ACLK,
+ CLK_CON_GAT_GOUT_FSYS_MMC_EMBD_SDCLKIN,
+ CLK_CON_GAT_GOUT_FSYS_MMC_SDIO_I_ACLK,
+ CLK_CON_GAT_GOUT_FSYS_MMC_SDIO_SDCLKIN,
+};
+
+/* List of parent clocks for Muxes in CMU_FSYS */
+PNAME(mout_fsys_bus_user_p) = { "oscclk", "dout_fsys_bus" };
+PNAME(mout_fsys_mmc_card_user_p) = { "oscclk", "dout_fsys_mmc_card" };
+PNAME(mout_fsys_mmc_embd_user_p) = { "oscclk", "dout_fsys_mmc_embd" };
+PNAME(mout_fsys_mmc_sdio_user_p) = { "oscclk", "dout_fsys_mmc_sdio" };
+PNAME(mout_fsys_usb30drd_user_p) = { "oscclk", "dout_fsys_usb30drd" };
+
+static const struct samsung_mux_clock fsys_mux_clks[] __initconst = {
+ MUX(CLK_MOUT_FSYS_BUS_USER, "mout_fsys_bus_user", mout_fsys_bus_user_p,
+ PLL_CON0_MUX_CLKCMU_FSYS_BUS_USER, 4, 1),
+ MUX_F(CLK_MOUT_FSYS_MMC_CARD_USER, "mout_fsys_mmc_card_user",
+ mout_fsys_mmc_card_user_p, PLL_CON0_MUX_CLKCMU_FSYS_MMC_CARD_USER,
+ 4, 1, CLK_SET_RATE_PARENT, 0),
+ MUX_F(CLK_MOUT_FSYS_MMC_EMBD_USER, "mout_fsys_mmc_embd_user",
+ mout_fsys_mmc_embd_user_p, PLL_CON0_MUX_CLKCMU_FSYS_MMC_EMBD_USER,
+ 4, 1, CLK_SET_RATE_PARENT, 0),
+ MUX_F(CLK_MOUT_FSYS_MMC_SDIO_USER, "mout_fsys_mmc_sdio_user",
+ mout_fsys_mmc_sdio_user_p, PLL_CON0_MUX_CLKCMU_FSYS_MMC_SDIO_USER,
+ 4, 1, CLK_SET_RATE_PARENT, 0),
+ MUX_F(CLK_MOUT_FSYS_USB30DRD_USER, "mout_fsys_usb30drd_user",
+ mout_fsys_usb30drd_user_p, PLL_CON0_MUX_CLKCMU_FSYS_USB30DRD_USER,
+ 4, 1, CLK_SET_RATE_PARENT, 0),
+};
+
+static const struct samsung_gate_clock fsys_gate_clks[] __initconst = {
+ GATE(CLK_GOUT_MMC_CARD_ACLK, "gout_mmc_card_aclk", "mout_fsys_bus_user",
+ CLK_CON_GAT_GOUT_FSYS_MMC_CARD_I_ACLK, 21, 0, 0),
+ GATE(CLK_GOUT_MMC_CARD_SDCLKIN, "gout_mmc_card_sdclkin",
+ "mout_fsys_mmc_card_user", CLK_CON_GAT_GOUT_FSYS_MMC_CARD_SDCLKIN,
+ 21, CLK_SET_RATE_PARENT, 0),
+ GATE(CLK_GOUT_MMC_EMBD_ACLK, "gout_mmc_embd_aclk", "mout_fsys_bus_user",
+ CLK_CON_GAT_GOUT_FSYS_MMC_EMBD_I_ACLK, 21, 0, 0),
+ GATE(CLK_GOUT_MMC_EMBD_SDCLKIN, "gout_mmc_embd_sdclkin",
+ "mout_fsys_mmc_embd_user", CLK_CON_GAT_GOUT_FSYS_MMC_EMBD_SDCLKIN,
+ 21, CLK_SET_RATE_PARENT, 0),
+ GATE(CLK_GOUT_MMC_SDIO_ACLK, "gout_mmc_sdio_aclk", "mout_fsys_bus_user",
+ CLK_CON_GAT_GOUT_FSYS_MMC_SDIO_I_ACLK, 21, 0, 0),
+ GATE(CLK_GOUT_MMC_SDIO_SDCLKIN, "gout_mmc_sdio_sdclkin",
+ "mout_fsys_mmc_sdio_user", CLK_CON_GAT_GOUT_FSYS_MMC_SDIO_SDCLKIN,
+ 21, CLK_SET_RATE_PARENT, 0),
+};
+
+static const struct samsung_cmu_info fsys_cmu_info __initconst = {
+ .mux_clks = fsys_mux_clks,
+ .nr_mux_clks = ARRAY_SIZE(fsys_mux_clks),
+ .gate_clks = fsys_gate_clks,
+ .nr_gate_clks = ARRAY_SIZE(fsys_gate_clks),
+ .nr_clk_ids = FSYS_NR_CLK,
+ .clk_regs = fsys_clk_regs,
+ .nr_clk_regs = ARRAY_SIZE(fsys_clk_regs),
+ .clk_name = "dout_fsys_bus",
+};
+
/* ---- platform_driver ----------------------------------------------------- */
static int __init exynos7885_cmu_probe(struct platform_device *pdev)
@@ -577,6 +732,9 @@ static const struct of_device_id exynos7885_cmu_of_match[] = {
{
.compatible = "samsung,exynos7885-cmu-core",
.data = &core_cmu_info,
+ }, {
+ .compatible = "samsung,exynos7885-cmu-fsys",
+ .data = &fsys_cmu_info,
}, {
},
};
--
2.36.1
Add the nodes relevant to provide clocks for Exynos7885 eMMC and to
support eMMC. eMMC is the internal storage used in the Samsung Galaxy A8
(2018) (jackpotlte), and all other known devices using the Exynos7885
SoC.
Signed-off-by: David Virag <[email protected]>
---
.../boot/dts/exynos/exynos7885-jackpotlte.dts | 20 ++++++++++++
arch/arm64/boot/dts/exynos/exynos7885.dtsi | 32 +++++++++++++++++++
2 files changed, 52 insertions(+)
diff --git a/arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts b/arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts
index 4cf9aa25f618..5db9a81ac7bb 100644
--- a/arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts
+++ b/arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts
@@ -60,6 +60,26 @@ power-key {
};
};
+&mmc_0 {
+ status = "okay";
+ mmc-hs200-1_8v;
+ mmc-hs400-1_8v;
+ cap-mmc-highspeed;
+ non-removable;
+ mmc-hs400-enhanced-strobe;
+ card-detect-delay = <200>;
+ clock-frequency = <800000000>;
+ bus-width = <8>;
+ samsung,dw-mshc-ciu-div = <3>;
+ samsung,dw-mshc-sdr-timing = <0 4>;
+ samsung,dw-mshc-ddr-timing = <2 4>;
+ samsung,dw-mshc-hs400-timing = <0 2>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&sd0_clk_fast_slew_rate_3x &sd0_cmd &sd0_rdqs
+ &sd0_bus1 &sd0_bus4 &sd0_bus8>;
+};
+
&oscclk {
clock-frequency = <26000000>;
};
diff --git a/arch/arm64/boot/dts/exynos/exynos7885.dtsi b/arch/arm64/boot/dts/exynos/exynos7885.dtsi
index 9c233c56558c..23c2e0bb0a2c 100644
--- a/arch/arm64/boot/dts/exynos/exynos7885.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynos7885.dtsi
@@ -240,6 +240,25 @@ cmu_top: clock-controller@12060000 {
clock-names = "oscclk";
};
+ cmu_fsys: clock-controller@13400000 {
+ compatible = "samsung,exynos7885-cmu-fsys";
+ reg = <0x13400000 0x8000>;
+ #clock-cells = <1>;
+
+ clocks = <&oscclk>,
+ <&cmu_top CLK_DOUT_FSYS_BUS>,
+ <&cmu_top CLK_DOUT_FSYS_MMC_CARD>,
+ <&cmu_top CLK_DOUT_FSYS_MMC_EMBD>,
+ <&cmu_top CLK_DOUT_FSYS_MMC_SDIO>,
+ <&cmu_top CLK_DOUT_FSYS_USB30DRD>;
+ clock-names = "oscclk",
+ "dout_fsys_bus",
+ "dout_fsys_mmc_card",
+ "dout_fsys_mmc_embd",
+ "dout_fsys_mmc_sdio",
+ "dout_fsys_usb30drd";
+ };
+
pinctrl_alive: pinctrl@11cb0000 {
compatible = "samsung,exynos7885-pinctrl";
reg = <0x11cb0000 0x1000>;
@@ -274,6 +293,19 @@ pmu_system_controller: system-controller@11c80000 {
reg = <0x11c80000 0x10000>;
};
+ mmc_0: mmc@13500000 {
+ compatible = "samsung,exynos7-dw-mshc-smu";
+ reg = <0x13500000 0x2000>;
+ interrupts = <GIC_SPI 146 IRQ_TYPE_LEVEL_HIGH>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ clocks = <&cmu_fsys CLK_GOUT_MMC_EMBD_ACLK>,
+ <&cmu_fsys CLK_GOUT_MMC_EMBD_SDCLKIN>;
+ clock-names = "biu", "ciu";
+ fifo-depth = <0x40>;
+ status = "disabled";
+ };
+
serial_0: serial@13800000 {
compatible = "samsung,exynos5433-uart";
reg = <0x13800000 0x100>;
--
2.36.1
TREX D Core and P core clocks seem to be related to the BTS (Bus Traffic
Shaper) inside the Exynos7885 SoC, and are needed for the SoC to
function correctly.
When clocks are cut from TREX D Core, the eMMC and the framebuffer stops
working properly. Other unknown things may stop working as well.
When clocks are cut from TREX P Core, the system locks up needing a hard
reset.
Add these clocks and mark them critical so that they are always on.
Signed-off-by: David Virag <[email protected]>
---
drivers/clk/samsung/clk-exynos7885.c | 49 ++++++++++++++++++++++++----
1 file changed, 42 insertions(+), 7 deletions(-)
diff --git a/drivers/clk/samsung/clk-exynos7885.c b/drivers/clk/samsung/clk-exynos7885.c
index 302937025409..0d2a950ed184 100644
--- a/drivers/clk/samsung/clk-exynos7885.c
+++ b/drivers/clk/samsung/clk-exynos7885.c
@@ -571,13 +571,20 @@ CLK_OF_DECLARE(exynos7885_cmu_peri, "samsung,exynos7885-cmu-peri",
/* ---- CMU_CORE ------------------------------------------------------------ */
/* Register Offset definitions for CMU_CORE (0x12000000) */
-#define PLL_CON0_MUX_CLKCMU_CORE_BUS_USER 0x0100
-#define PLL_CON0_MUX_CLKCMU_CORE_CCI_USER 0x0120
-#define PLL_CON0_MUX_CLKCMU_CORE_G3D_USER 0x0140
-#define CLK_CON_MUX_MUX_CLK_CORE_GIC 0x1000
-#define CLK_CON_DIV_DIV_CLK_CORE_BUSP 0x1800
-#define CLK_CON_GAT_GOUT_CORE_CCI_550_ACLK 0x2054
-#define CLK_CON_GAT_GOUT_CORE_GIC400_CLK 0x2058
+#define PLL_CON0_MUX_CLKCMU_CORE_BUS_USER 0x0100
+#define PLL_CON0_MUX_CLKCMU_CORE_CCI_USER 0x0120
+#define PLL_CON0_MUX_CLKCMU_CORE_G3D_USER 0x0140
+#define CLK_CON_MUX_MUX_CLK_CORE_GIC 0x1000
+#define CLK_CON_DIV_DIV_CLK_CORE_BUSP 0x1800
+#define CLK_CON_GAT_GOUT_CORE_CCI_550_ACLK 0x2054
+#define CLK_CON_GAT_GOUT_CORE_GIC400_CLK 0x2058
+#define CLK_CON_GAT_GOUT_CORE_TREX_D_CORE_ACLK 0x215c
+#define CLK_CON_GAT_GOUT_CORE_TREX_D_CORE_GCLK 0x2160
+#define CLK_CON_GAT_GOUT_CORE_TREX_D_CORE_PCLK 0x2164
+#define CLK_CON_GAT_GOUT_CORE_TREX_P_CORE_ACLK_P_CORE 0x2168
+#define CLK_CON_GAT_GOUT_CORE_TREX_P_CORE_CCLK_P_CORE 0x216c
+#define CLK_CON_GAT_GOUT_CORE_TREX_P_CORE_PCLK 0x2170
+#define CLK_CON_GAT_GOUT_CORE_TREX_P_CORE_PCLK_P_CORE 0x2174
static const unsigned long core_clk_regs[] __initconst = {
PLL_CON0_MUX_CLKCMU_CORE_BUS_USER,
@@ -587,6 +594,13 @@ static const unsigned long core_clk_regs[] __initconst = {
CLK_CON_DIV_DIV_CLK_CORE_BUSP,
CLK_CON_GAT_GOUT_CORE_CCI_550_ACLK,
CLK_CON_GAT_GOUT_CORE_GIC400_CLK,
+ CLK_CON_GAT_GOUT_CORE_TREX_D_CORE_ACLK,
+ CLK_CON_GAT_GOUT_CORE_TREX_D_CORE_GCLK,
+ CLK_CON_GAT_GOUT_CORE_TREX_D_CORE_PCLK,
+ CLK_CON_GAT_GOUT_CORE_TREX_P_CORE_ACLK_P_CORE,
+ CLK_CON_GAT_GOUT_CORE_TREX_P_CORE_CCLK_P_CORE,
+ CLK_CON_GAT_GOUT_CORE_TREX_P_CORE_PCLK,
+ CLK_CON_GAT_GOUT_CORE_TREX_P_CORE_PCLK_P_CORE,
};
/* List of parent clocks for Muxes in CMU_CORE */
@@ -618,6 +632,27 @@ static const struct samsung_gate_clock core_gate_clks[] __initconst = {
/* GIC (interrupt controller) clock must be always running */
GATE(CLK_GOUT_GIC400_CLK, "gout_gic400_clk", "mout_core_gic",
CLK_CON_GAT_GOUT_CORE_GIC400_CLK, 21, CLK_IS_CRITICAL, 0),
+ /*
+ * TREX D and P Core (seems to be related to "bus traffic shaper")
+ * clocks must always be running
+ */
+ GATE(CLK_GOUT_TREX_D_CORE_ACLK, "gout_trex_d_core_aclk", "mout_core_bus_user",
+ CLK_CON_GAT_GOUT_CORE_TREX_D_CORE_ACLK, 21, CLK_IS_CRITICAL, 0),
+ GATE(CLK_GOUT_TREX_D_CORE_GCLK, "gout_trex_d_core_gclk", "mout_core_g3d_user",
+ CLK_CON_GAT_GOUT_CORE_TREX_D_CORE_GCLK, 21, CLK_IS_CRITICAL, 0),
+ GATE(CLK_GOUT_TREX_D_CORE_PCLK, "gout_trex_d_core_pclk", "dout_core_busp",
+ CLK_CON_GAT_GOUT_CORE_TREX_D_CORE_PCLK, 21, CLK_IS_CRITICAL, 0),
+ GATE(CLK_GOUT_TREX_P_CORE_ACLK_P_CORE, "gout_trex_p_core_aclk_p_core",
+ "mout_core_bus_user", CLK_CON_GAT_GOUT_CORE_TREX_P_CORE_ACLK_P_CORE, 21,
+ CLK_IS_CRITICAL, 0),
+ GATE(CLK_GOUT_TREX_P_CORE_CCLK_P_CORE, "gout_trex_p_core_cclk_p_core",
+ "mout_core_cci_user", CLK_CON_GAT_GOUT_CORE_TREX_P_CORE_CCLK_P_CORE, 21,
+ CLK_IS_CRITICAL, 0),
+ GATE(CLK_GOUT_TREX_P_CORE_PCLK, "gout_trex_p_core_pclk", "dout_core_busp",
+ CLK_CON_GAT_GOUT_CORE_TREX_P_CORE_PCLK, 21, CLK_IS_CRITICAL, 0),
+ GATE(CLK_GOUT_TREX_P_CORE_PCLK_P_CORE, "gout_trex_p_core_pclk_p_core",
+ "dout_core_busp", CLK_CON_GAT_GOUT_CORE_TREX_P_CORE_PCLK_P_CORE, 21,
+ CLK_IS_CRITICAL, 0),
};
static const struct samsung_cmu_info core_cmu_info __initconst = {
--
2.36.1
On 02/06/2022 01:37, David Virag wrote:
> TREX D Core and P core clocks seem to be related to the BTS (Bus Traffic
> Shaper) inside the Exynos7885 SoC, and are needed for the SoC to
> function correctly.
>
> When clocks are cut from TREX D Core, the eMMC and the framebuffer stops
> working properly. Other unknown things may stop working as well.
>
> When clocks are cut from TREX P Core, the system locks up needing a hard
> reset.
>
> Add these clocks and mark them critical so that they are always on.
Reviewed-by: Krzysztof Kozlowski <[email protected]>
Best regards,
Krzysztof
On 02/06/2022 01:37, David Virag wrote:
> TREX D Core and P core clocks seem to be related to the BTS (Bus Traffic
> Shaper) inside the Exynos7885 SoC, and are needed for the SoC to
> function correctly.
>
> Add indices for these clocks.
>
Reviewed-by: Krzysztof Kozlowski <[email protected]>
Best regards,
Krzysztof
On 02/06/2022 01:37, David Virag wrote:
> Add the nodes relevant to provide clocks for Exynos7885 eMMC and to
> support eMMC. eMMC is the internal storage used in the Samsung Galaxy A8
> (2018) (jackpotlte), and all other known devices using the Exynos7885
> SoC.
>
> Signed-off-by: David Virag <[email protected]>
> ---
> .../boot/dts/exynos/exynos7885-jackpotlte.dts | 20 ++++++++++++
> arch/arm64/boot/dts/exynos/exynos7885.dtsi | 32 +++++++++++++++++++
> 2 files changed, 52 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts b/arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts
> index 4cf9aa25f618..5db9a81ac7bb 100644
> --- a/arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts
> +++ b/arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts
> @@ -60,6 +60,26 @@ power-key {
> };
> };
>
> +&mmc_0 {
> + status = "okay";
> + mmc-hs200-1_8v;
> + mmc-hs400-1_8v;
> + cap-mmc-highspeed;
> + non-removable;
> + mmc-hs400-enhanced-strobe;
> + card-detect-delay = <200>;
> + clock-frequency = <800000000>;
Is this real property for MMC? Neither mmc nor DW MSHC bindings mention it.
Best regards,
Krzysztof
On Thu, 2022-06-02 at 14:01 +0200, Krzysztof Kozlowski wrote:
> On 02/06/2022 01:37, David Virag wrote:
> > Add the nodes relevant to provide clocks for Exynos7885 eMMC and to
> > support eMMC. eMMC is the internal storage used in the Samsung
> > Galaxy A8
> > (2018) (jackpotlte), and all other known devices using the
> > Exynos7885
> > SoC.
> >
> > Signed-off-by: David Virag <[email protected]>
> > ---
> > .../boot/dts/exynos/exynos7885-jackpotlte.dts | 20 ++++++++++++
> > arch/arm64/boot/dts/exynos/exynos7885.dtsi | 32
> > +++++++++++++++++++
> > 2 files changed, 52 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts
> > b/arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts
> > index 4cf9aa25f618..5db9a81ac7bb 100644
> > --- a/arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts
> > +++ b/arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts
> > @@ -60,6 +60,26 @@ power-key {
> > };
> > };
> >
> > +&mmc_0 {
> > + status = "okay";
> > + mmc-hs200-1_8v;
> > + mmc-hs400-1_8v;
> > + cap-mmc-highspeed;
> > + non-removable;
> > + mmc-hs400-enhanced-strobe;
> > + card-detect-delay = <200>;
> > + clock-frequency = <800000000>;
>
> Is this real property for MMC? Neither mmc nor DW MSHC bindings
> mention it.
It is, but I don't remember trying without it. Seems like it is not
documented then. It is used in dw_mmc.c in the following places:
https://github.com/torvalds/linux/blob/master/drivers/mmc/host/dw_mmc.c#L3242-L3243
https://github.com/torvalds/linux/blob/master/drivers/mmc/host/dw_mmc.c#L3306-L3325
The Exynos850 device tree has the same property in it's mmc node.
>
> Best regards,
> Krzysztof
Best regards,
David
On 02/06/2022 01:37, David Virag wrote:
> CMU_FSYS clock domain provides clocks for FSYS IP-core providing clocks
> for all MMC devices on Exynos7885, and USB30DRD.
>
> This patch includes:
https://elixir.bootlin.com/linux/v5.17.1/source/Documentation/process/submitting-patches.rst#L95
s/This patch includes:/Add:/
> - Bus clocks in CMU_TOP needed for CMU_FSYS
> - All clocks in CMU_FSYS needed for MMC devices
>
> Signed-off-by: David Virag <[email protected]>
> ---
Reviewed-by: Krzysztof Kozlowski <[email protected]>
Best regards,
Krzysztof
On 03/06/2022 00:18, David Virag wrote:
> On Thu, 2022-06-02 at 14:01 +0200, Krzysztof Kozlowski wrote:
>> On 02/06/2022 01:37, David Virag wrote:
>>> Add the nodes relevant to provide clocks for Exynos7885 eMMC and to
>>> support eMMC. eMMC is the internal storage used in the Samsung
>>> Galaxy A8
>>> (2018) (jackpotlte), and all other known devices using the
>>> Exynos7885
>>> SoC.
>>>
>>> Signed-off-by: David Virag <[email protected]>
>>> ---
>>> .../boot/dts/exynos/exynos7885-jackpotlte.dts | 20 ++++++++++++
>>> arch/arm64/boot/dts/exynos/exynos7885.dtsi | 32
>>> +++++++++++++++++++
>>> 2 files changed, 52 insertions(+)
>>>
>>> diff --git a/arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts
>>> b/arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts
>>> index 4cf9aa25f618..5db9a81ac7bb 100644
>>> --- a/arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts
>>> +++ b/arch/arm64/boot/dts/exynos/exynos7885-jackpotlte.dts
>>> @@ -60,6 +60,26 @@ power-key {
>>> };
>>> };
>>>
>>> +&mmc_0 {
>>> + status = "okay";
>>> + mmc-hs200-1_8v;
>>> + mmc-hs400-1_8v;
>>> + cap-mmc-highspeed;
>>> + non-removable;
>>> + mmc-hs400-enhanced-strobe;
>>> + card-detect-delay = <200>;
>>> + clock-frequency = <800000000>;
>>
>> Is this real property for MMC? Neither mmc nor DW MSHC bindings
>> mention it.
>
> It is, but I don't remember trying without it. Seems like it is not
> documented then. It is used in dw_mmc.c in the following places:
>
> https://github.com/torvalds/linux/blob/master/drivers/mmc/host/dw_mmc.c#L3242-L3243
>
> https://github.com/torvalds/linux/blob/master/drivers/mmc/host/dw_mmc.c#L3306-L3325
>
> The Exynos850 device tree has the same property in it's mmc node.
Indeed, it's fine then. I'll check the bindings and convert them to DT
schema.
Best regards,
Krzysztof
On Thu, 2 Jun 2022 01:37:40 +0200, David Virag wrote:
> TREX D Core and P core clocks seem to be related to the BTS (Bus Traffic
> Shaper) inside the Exynos7885 SoC, and are needed for the SoC to
> function correctly.
>
> Add indices for these clocks.
>
>
> [...]
Applied, thanks!
[2/5] dt-bindings: clock: Add indices for Exynos7885 TREX clocks
https://git.kernel.org/krzk/linux/c/e756e932a3a16418cd8bad757b028bfb337b4a51
Best regards,
--
Krzysztof Kozlowski <[email protected]>
On Thu, 2 Jun 2022 01:37:43 +0200, David Virag wrote:
> Add the nodes relevant to provide clocks for Exynos7885 eMMC and to
> support eMMC. eMMC is the internal storage used in the Samsung Galaxy A8
> (2018) (jackpotlte), and all other known devices using the Exynos7885
> SoC.
>
>
Applied, thanks!
[5/5] arm64: dts: exynos: Add internal eMMC support to jackpotlte
https://git.kernel.org/krzk/linux/c/ced37411d7f597129fecc0c3ca2324f44e33f4c8
Best regards,
--
Krzysztof Kozlowski <[email protected]>