There is ecspi ERR009165 on i.mx6/7 soc family, which cause FIFO
transfer to be send twice in DMA mode. Please get more information from:
https://www.nxp.com/docs/en/errata/IMX6DQCE.pdf. The workaround is adding
new sdma ram script which works in XCH mode as PIO inside sdma instead
of SMC mode, meanwhile, 'TX_THRESHOLD' should be 0.
The issue should be exist on all legacy i.mx6/7 soc family before i.mx6ul,
NXP fix this design issue from i.mx6ul, so newer chips such as i.mx6ull/
i.mx8mq/i.mx8mm, don't need this workaroud anymore. This patch set
add new 'fsl,imx6ul-ecspi' for ecspi driver and 'ecspi_fixed' in sdma
driver to choose if need errata or not.
The first two reverted patches should be the same issue, though, it
seems 'fixed' by changing to other shp script. Hope Sean or Sascha could
have the chance to test this patch set if could fix their issues.
Besides, enable sdma support for i.mx8mm/8mq and fix ecspi1 not work
on i.mx8mm because the event id is zero.
PS:
Please get sdma firmware from below linux-firmware and copy it to your
local rootfs /lib/firmware/imx/sdma.
https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/imx/sdma
Robin Gong (15):
Revert "ARM: dts: imx6q: Use correct SDMA script for SPI5 core"
Revert "ARM: dts: imx6: Use correct SDMA script for SPI cores"
Revert "dmaengine: imx-sdma: refine to load context only once"
dmaengine: imx-sdma: remove dupilicated sdma_load_context
dma: engine: imx-sdma: add mcu_2_ecspi script
spi: imx: fix ERR009165
spi: imx: remove ERR009165 workaround on i.mx6ul
dt-bindings: spi: imx: add i.mx6ul to state errata fixed
dmaengine: imx-sdma: remove ERR009165 on i.mx6ul
dt-bindings: dma: imx-sdma: add i.mx6ul/6sx compatible name
dmaengine: imx-sdma: fix ecspi1 rx dma not work on i.mx8mm
ARM64: dts: freescale: imx8mm/8mq: update new compatible name for
ecspi and sdma
ARM: dts: imx6ul: add dma support on ecspi
ARM: dts: imx6sll: correct ecspi/sdma compatible
arm64: defconfig: Enable SDMA on i.mx8mq/8mm
.../devicetree/bindings/dma/fsl-imx-sdma.txt | 2 +
.../devicetree/bindings/spi/fsl-imx-cspi.txt | 2 +
arch/arm/boot/dts/imx6q.dtsi | 2 +-
arch/arm/boot/dts/imx6qdl.dtsi | 8 +--
arch/arm/boot/dts/imx6sll.dtsi | 10 ++--
arch/arm/boot/dts/imx6ul.dtsi | 8 +++
arch/arm64/boot/dts/freescale/imx8mm.dtsi | 14 ++---
arch/arm64/boot/dts/freescale/imx8mq.dtsi | 6 +-
arch/arm64/configs/defconfig | 3 +
drivers/dma/imx-sdma.c | 67 ++++++++++++++++------
drivers/spi/spi-imx.c | 46 ++++++++++++---
include/linux/platform_data/dma-imx-sdma.h | 1 +
12 files changed, 124 insertions(+), 45 deletions(-)
--
2.7.4
This reverts commit df07101e1c4a29e820df02f9989a066988b160e6.
Signed-off-by: Robin Gong <[email protected]>
---
arch/arm/boot/dts/imx6q.dtsi | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/imx6q.dtsi b/arch/arm/boot/dts/imx6q.dtsi
index d038f41..7175898 100644
--- a/arch/arm/boot/dts/imx6q.dtsi
+++ b/arch/arm/boot/dts/imx6q.dtsi
@@ -172,7 +172,7 @@
clocks = <&clks IMX6Q_CLK_ECSPI5>,
<&clks IMX6Q_CLK_ECSPI5>;
clock-names = "ipg", "per";
- dmas = <&sdma 11 8 1>, <&sdma 12 8 2>;
+ dmas = <&sdma 11 7 1>, <&sdma 12 7 2>;
dma-names = "rx", "tx";
status = "disabled";
};
--
2.7.4
This reverts commit dd4b487b32a3571fdcc66062e661e3a3e360e35b.
Signed-off-by: Robin Gong <[email protected]>
---
arch/arm/boot/dts/imx6qdl.dtsi | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi
index b3a77bc..a90f217 100644
--- a/arch/arm/boot/dts/imx6qdl.dtsi
+++ b/arch/arm/boot/dts/imx6qdl.dtsi
@@ -339,7 +339,7 @@
clocks = <&clks IMX6QDL_CLK_ECSPI1>,
<&clks IMX6QDL_CLK_ECSPI1>;
clock-names = "ipg", "per";
- dmas = <&sdma 3 8 1>, <&sdma 4 8 2>;
+ dmas = <&sdma 3 7 1>, <&sdma 4 7 2>;
dma-names = "rx", "tx";
status = "disabled";
};
@@ -353,7 +353,7 @@
clocks = <&clks IMX6QDL_CLK_ECSPI2>,
<&clks IMX6QDL_CLK_ECSPI2>;
clock-names = "ipg", "per";
- dmas = <&sdma 5 8 1>, <&sdma 6 8 2>;
+ dmas = <&sdma 5 7 1>, <&sdma 6 7 2>;
dma-names = "rx", "tx";
status = "disabled";
};
@@ -367,7 +367,7 @@
clocks = <&clks IMX6QDL_CLK_ECSPI3>,
<&clks IMX6QDL_CLK_ECSPI3>;
clock-names = "ipg", "per";
- dmas = <&sdma 7 8 1>, <&sdma 8 8 2>;
+ dmas = <&sdma 7 7 1>, <&sdma 8 7 2>;
dma-names = "rx", "tx";
status = "disabled";
};
@@ -381,7 +381,7 @@
clocks = <&clks IMX6QDL_CLK_ECSPI4>,
<&clks IMX6QDL_CLK_ECSPI4>;
clock-names = "ipg", "per";
- dmas = <&sdma 9 8 1>, <&sdma 10 8 2>;
+ dmas = <&sdma 9 7 1>, <&sdma 10 7 2>;
dma-names = "rx", "tx";
status = "disabled";
};
--
2.7.4
This reverts commit ad0d92d7ba6aecbe2705907c38ff8d8be4da1e9c, because
in spi-imx case, burst length may be changed dynamically.
Signed-off-by: Robin Gong <[email protected]>
---
drivers/dma/imx-sdma.c | 7 -------
1 file changed, 7 deletions(-)
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 99d9f43..407a56e 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -377,7 +377,6 @@ struct sdma_channel {
unsigned long watermark_level;
u32 shp_addr, per_addr;
enum dma_status status;
- bool context_loaded;
struct imx_dma_data data;
struct work_struct terminate_worker;
};
@@ -988,9 +987,6 @@ static int sdma_load_context(struct sdma_channel *sdmac)
int ret;
unsigned long flags;
- if (sdmac->context_loaded)
- return 0;
-
if (sdmac->direction == DMA_DEV_TO_MEM)
load_address = sdmac->pc_from_device;
else if (sdmac->direction == DMA_DEV_TO_DEV)
@@ -1033,8 +1029,6 @@ static int sdma_load_context(struct sdma_channel *sdmac)
spin_unlock_irqrestore(&sdma->channel_0_lock, flags);
- sdmac->context_loaded = true;
-
return ret;
}
@@ -1074,7 +1068,6 @@ static void sdma_channel_terminate_work(struct work_struct *work)
sdmac->desc = NULL;
spin_unlock_irqrestore(&sdmac->vc.lock, flags);
vchan_dma_desc_free_list(&sdmac->vc, &head);
- sdmac->context_loaded = false;
}
static int sdma_disable_channel_async(struct dma_chan *chan)
--
2.7.4
Since sdma_transfer_init() will do sdma_load_context before any
sdma transfer, no need once more in sdma_config_channel().
Signed-off-by: Robin Gong <[email protected]>
---
drivers/dma/imx-sdma.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 407a56e..8a8ce98a 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -1174,8 +1174,6 @@ static int sdma_config_channel(struct dma_chan *chan)
sdmac->watermark_level = 0; /* FIXME: M3_BASE_ADDRESS */
}
- ret = sdma_load_context(sdmac);
-
return ret;
}
--
2.7.4
Add mcu_2_ecspi script to fix ecspi errata ERR009165.
Signed-off-by: Robin Gong <[email protected]>
---
drivers/dma/imx-sdma.c | 3 +++
include/linux/platform_data/dma-imx-sdma.h | 1 +
2 files changed, 4 insertions(+)
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 8a8ce98a..1e20470 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -924,6 +924,9 @@ static void sdma_get_pc(struct sdma_channel *sdmac,
emi_2_per = sdma->script_addrs->mcu_2_ata_addr;
break;
case IMX_DMATYPE_CSPI:
+ per_2_emi = sdma->script_addrs->app_2_mcu_addr;
+ emi_2_per = sdma->script_addrs->mcu_2_ecspi_addr;
+ break;
case IMX_DMATYPE_EXT:
case IMX_DMATYPE_SSI:
case IMX_DMATYPE_SAI:
diff --git a/include/linux/platform_data/dma-imx-sdma.h b/include/linux/platform_data/dma-imx-sdma.h
index 6eaa53c..f794fee 100644
--- a/include/linux/platform_data/dma-imx-sdma.h
+++ b/include/linux/platform_data/dma-imx-sdma.h
@@ -51,6 +51,7 @@ struct sdma_script_start_addrs {
/* End of v2 array */
s32 zcanfd_2_mcu_addr;
s32 zqspi_2_mcu_addr;
+ s32 mcu_2_ecspi_addr;
/* End of v3 array */
};
--
2.7.4
Change to XCH mode even in dma mode, please refer to the below
errata:
https://www.nxp.com/docs/en/errata/IMX6DQCE.pdf
Signed-off-by: Robin Gong <[email protected]>
---
drivers/spi/spi-imx.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c
index 09c9a1e..eb56eac 100644
--- a/drivers/spi/spi-imx.c
+++ b/drivers/spi/spi-imx.c
@@ -585,8 +585,9 @@ static int mx51_ecspi_prepare_transfer(struct spi_imx_data *spi_imx,
ctrl |= mx51_ecspi_clkdiv(spi_imx, t->speed_hz, &clk);
spi_imx->spi_bus_clk = clk;
+ /* ERR009165: work in XHC mode as PIO */
if (spi_imx->usedma)
- ctrl |= MX51_ECSPI_CTRL_SMC;
+ ctrl &= ~MX51_ECSPI_CTRL_SMC;
writel(ctrl, spi_imx->base + MX51_ECSPI_CTRL);
@@ -612,12 +613,14 @@ static int mx51_ecspi_prepare_transfer(struct spi_imx_data *spi_imx,
static void mx51_setup_wml(struct spi_imx_data *spi_imx)
{
+ u32 tx_wml = 0;
+
/*
* Configure the DMA register: setup the watermark
* and enable DMA request.
*/
writel(MX51_ECSPI_DMA_RX_WML(spi_imx->wml - 1) |
- MX51_ECSPI_DMA_TX_WML(spi_imx->wml) |
+ MX51_ECSPI_DMA_TX_WML(tx_wml) |
MX51_ECSPI_DMA_RXT_WML(spi_imx->wml) |
MX51_ECSPI_DMA_TEDEN | MX51_ECSPI_DMA_RXDEN |
MX51_ECSPI_DMA_RXTDEN, spi_imx->base + MX51_ECSPI_DMA);
@@ -1265,10 +1268,6 @@ static int spi_imx_sdma_init(struct device *dev, struct spi_imx_data *spi_imx,
{
int ret;
- /* use pio mode for i.mx6dl chip TKT238285 */
- if (of_machine_is_compatible("fsl,imx6dl"))
- return 0;
-
spi_imx->wml = spi_imx->devtype_data->fifo_size / 2;
/* Prepare for TX DMA: */
--
2.7.4
ERR009165 fix on i.mx6ul and next chip, such as i.mx6ull/i.mx8mq/i.mx8mm.
Remove workaround on those chips. Add new i.mx6ul type for that.
Signed-off-by: Robin Gong <[email protected]>
---
drivers/spi/spi-imx.c | 39 +++++++++++++++++++++++++++++++++++----
1 file changed, 35 insertions(+), 4 deletions(-)
diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c
index eb56eac..2e5e978 100644
--- a/drivers/spi/spi-imx.c
+++ b/drivers/spi/spi-imx.c
@@ -57,6 +57,7 @@ enum spi_imx_devtype {
IMX35_CSPI, /* CSPI on all i.mx except above */
IMX51_ECSPI, /* ECSPI on i.mx51 */
IMX53_ECSPI, /* ECSPI on i.mx53 and later */
+ IMX6UL_ECSPI, /* ERR009165 fix from i.mx6ul */
};
struct spi_imx_data;
@@ -128,7 +129,8 @@ static inline int is_imx35_cspi(struct spi_imx_data *d)
static inline int is_imx51_ecspi(struct spi_imx_data *d)
{
- return d->devtype_data->devtype == IMX51_ECSPI;
+ return d->devtype_data->devtype == IMX51_ECSPI ||
+ d->devtype_data->devtype == IMX6UL_ECSPI;
}
static inline int is_imx53_ecspi(struct spi_imx_data *d)
@@ -585,9 +587,16 @@ static int mx51_ecspi_prepare_transfer(struct spi_imx_data *spi_imx,
ctrl |= mx51_ecspi_clkdiv(spi_imx, t->speed_hz, &clk);
spi_imx->spi_bus_clk = clk;
- /* ERR009165: work in XHC mode as PIO */
- if (spi_imx->usedma)
- ctrl &= ~MX51_ECSPI_CTRL_SMC;
+ /*
+ * ERR009165: work in XHC mode instead of SMC as PIO on the chips
+ * before i.mx6ul.
+ */
+ if (spi_imx->usedma) {
+ if (spi_imx->devtype_data->devtype == IMX6UL_ECSPI)
+ ctrl |= MX51_ECSPI_CTRL_SMC;
+ else
+ ctrl &= ~MX51_ECSPI_CTRL_SMC;
+ }
writel(ctrl, spi_imx->base + MX51_ECSPI_CTRL);
@@ -615,6 +624,8 @@ static void mx51_setup_wml(struct spi_imx_data *spi_imx)
{
u32 tx_wml = 0;
+ if (spi_imx->devtype_data->devtype == IMX6UL_ECSPI)
+ tx_wml = spi_imx->wml;
/*
* Configure the DMA register: setup the watermark
* and enable DMA request.
@@ -1012,6 +1023,22 @@ static struct spi_imx_devtype_data imx53_ecspi_devtype_data = {
.devtype = IMX53_ECSPI,
};
+static struct spi_imx_devtype_data imx6ul_ecspi_devtype_data = {
+ .intctrl = mx51_ecspi_intctrl,
+ .prepare_message = mx51_ecspi_prepare_message,
+ .prepare_transfer = mx51_ecspi_prepare_transfer,
+ .trigger = mx51_ecspi_trigger,
+ .rx_available = mx51_ecspi_rx_available,
+ .reset = mx51_ecspi_reset,
+ .setup_wml = mx51_setup_wml,
+ .fifo_size = 64,
+ .has_dmamode = true,
+ .dynamic_burst = true,
+ .has_slavemode = true,
+ .disable = mx51_ecspi_disable,
+ .devtype = IMX6UL_ECSPI,
+};
+
static const struct platform_device_id spi_imx_devtype[] = {
{
.name = "imx1-cspi",
@@ -1035,6 +1062,9 @@ static const struct platform_device_id spi_imx_devtype[] = {
.name = "imx53-ecspi",
.driver_data = (kernel_ulong_t) &imx53_ecspi_devtype_data,
}, {
+ .name = "imx6ul-ecspi",
+ .driver_data = (kernel_ulong_t) &imx6ul_ecspi_devtype_data,
+ }, {
/* sentinel */
}
};
@@ -1047,6 +1077,7 @@ static const struct of_device_id spi_imx_dt_ids[] = {
{ .compatible = "fsl,imx35-cspi", .data = &imx35_cspi_devtype_data, },
{ .compatible = "fsl,imx51-ecspi", .data = &imx51_ecspi_devtype_data, },
{ .compatible = "fsl,imx53-ecspi", .data = &imx53_ecspi_devtype_data, },
+ { .compatible = "fsl,imx6ul-ecspi", .data = &imx6ul_ecspi_devtype_data, },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, spi_imx_dt_ids);
--
2.7.4
ERR009165 fixed from i.mx6ul, add it to show the errata fixed.
Signed-off-by: Robin Gong <[email protected]>
---
Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt | 2 ++
1 file changed, 2 insertions(+)
diff --git a/Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt b/Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt
index 2d32641..32c4263d 100644
--- a/Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt
+++ b/Documentation/devicetree/bindings/spi/fsl-imx-cspi.txt
@@ -10,6 +10,8 @@ Required properties:
- "fsl,imx35-cspi" for SPI compatible with the one integrated on i.MX35
- "fsl,imx51-ecspi" for SPI compatible with the one integrated on i.MX51
- "fsl,imx53-ecspi" for SPI compatible with the one integrated on i.MX53 and later Soc
+ - "fsl,imx6ul-ecspi" ERR009165 fixed on i.MX6UL and later Soc
+ (https://www.nxp.com/docs/en/errata/IMX6DQCE.pdf)
- "fsl,imx8mq-ecspi" for SPI compatible with the one integrated on i.MX8M
- reg : Offset and length of the register set for the device
- interrupts : Should contain CSPI/eCSPI interrupt
--
2.7.4
Add i.mx6ul and i.mx6sx compatible name.
Signed-off-by: Robin Gong <[email protected]>
---
Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt | 2 ++
1 file changed, 2 insertions(+)
diff --git a/Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt b/Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt
index 9d8bbac..d024a83 100644
--- a/Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt
+++ b/Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt
@@ -9,6 +9,8 @@ Required properties:
"fsl,imx53-sdma"
"fsl,imx6q-sdma"
"fsl,imx7d-sdma"
+ "fsl,imx6sx-sdma"
+ "fsl,imx6ul-sdma"
"fsl,imx8mq-sdma"
The -to variants should be preferred since they allow to determine the
correct ROM script addresses needed for the driver to work without additional
--
2.7.4
ECSPI issue fixed from i.mx6ul at hardware level, no need
ERR009165 anymore on those chips such as i.mx8mq. Add i.mx6sx
from where i.mx6ul source.
Signed-off-by: Robin Gong <[email protected]>
---
drivers/dma/imx-sdma.c | 43 ++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 42 insertions(+), 1 deletion(-)
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 1e20470..99c44a5 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -419,6 +419,7 @@ struct sdma_driver_data {
int num_events;
struct sdma_script_start_addrs *script_addrs;
bool check_ratio;
+ bool ecspi_fixed;
};
struct sdma_engine {
@@ -539,6 +540,31 @@ static struct sdma_driver_data sdma_imx6q = {
.script_addrs = &sdma_script_imx6q,
};
+static struct sdma_script_start_addrs sdma_script_imx6sx = {
+ .ap_2_ap_addr = 642,
+ .uart_2_mcu_addr = 817,
+ .mcu_2_app_addr = 747,
+ .uartsh_2_mcu_addr = 1032,
+ .mcu_2_shp_addr = 960,
+ .app_2_mcu_addr = 683,
+ .shp_2_mcu_addr = 891,
+ .spdif_2_mcu_addr = 1100,
+ .mcu_2_spdif_addr = 1134,
+};
+
+static struct sdma_driver_data sdma_imx6sx = {
+ .chnenbl0 = SDMA_CHNENBL0_IMX35,
+ .num_events = 48,
+ .script_addrs = &sdma_script_imx6sx,
+};
+
+static struct sdma_driver_data sdma_imx6ul = {
+ .chnenbl0 = SDMA_CHNENBL0_IMX35,
+ .num_events = 48,
+ .script_addrs = &sdma_script_imx6sx,
+ .ecspi_fixed = true,
+};
+
static struct sdma_script_start_addrs sdma_script_imx7d = {
.ap_2_ap_addr = 644,
.uart_2_mcu_addr = 819,
@@ -562,6 +588,7 @@ static struct sdma_driver_data sdma_imx8mq = {
.num_events = 48,
.script_addrs = &sdma_script_imx7d,
.check_ratio = 1,
+ .ecspi_fixed = true,
};
static const struct platform_device_id sdma_devtypes[] = {
@@ -584,9 +611,15 @@ static const struct platform_device_id sdma_devtypes[] = {
.name = "imx6q-sdma",
.driver_data = (unsigned long)&sdma_imx6q,
}, {
+ .name = "imx6sx-sdma",
+ .driver_data = (unsigned long)&sdma_imx6sx,
+ }, {
.name = "imx7d-sdma",
.driver_data = (unsigned long)&sdma_imx7d,
}, {
+ .name = "imx6ul-sdma",
+ .driver_data = (unsigned long)&sdma_imx6ul,
+ }, {
.name = "imx8mq-sdma",
.driver_data = (unsigned long)&sdma_imx8mq,
}, {
@@ -602,7 +635,9 @@ static const struct of_device_id sdma_dt_ids[] = {
{ .compatible = "fsl,imx35-sdma", .data = &sdma_imx35, },
{ .compatible = "fsl,imx31-sdma", .data = &sdma_imx31, },
{ .compatible = "fsl,imx25-sdma", .data = &sdma_imx25, },
+ { .compatible = "fsl,imx6sx-sdma", .data = &sdma_imx6sx, },
{ .compatible = "fsl,imx7d-sdma", .data = &sdma_imx7d, },
+ { .compatible = "fsl,imx6ul-sdma", .data = &sdma_imx6ul, },
{ .compatible = "fsl,imx8mq-sdma", .data = &sdma_imx8mq, },
{ /* sentinel */ }
};
@@ -1167,8 +1202,14 @@ static int sdma_config_channel(struct dma_chan *chan)
if (sdmac->peripheral_type == IMX_DMATYPE_ASRC_SP ||
sdmac->peripheral_type == IMX_DMATYPE_ASRC)
sdma_set_watermarklevel_for_p2p(sdmac);
- } else
+ } else {
+ /* ERR009165 fixed from i.mx6ul, no errata need */
+ if (sdmac->peripheral_type == IMX_DMATYPE_CSPI &&
+ sdmac->direction == DMA_MEM_TO_DEV &&
+ sdmac->sdma->drvdata->ecspi_fixed)
+ __set_bit(31, &sdmac->watermark_level);
__set_bit(sdmac->event_id0, sdmac->event_mask);
+ }
/* Address */
sdmac->shp_addr = sdmac->per_address;
--
2.7.4
Because the number of ecspi1 rx event on i.mx8mm is 0, the condition
check ignore such special case without dma channel enabled, which caused
ecspi1 rx works failed. Actually, no need to check event_id0, checking
event_id1 is enough for DEV_2_DEV case because it's so lucky that event_id1
never be 0.
Signed-off-by: Robin Gong <[email protected]>
---
drivers/dma/imx-sdma.c | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 99c44a5..d87a8f9 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -1363,8 +1363,8 @@ static void sdma_free_chan_resources(struct dma_chan *chan)
sdma_channel_synchronize(chan);
- if (sdmac->event_id0)
- sdma_event_disable(sdmac, sdmac->event_id0);
+ sdma_event_disable(sdmac, sdmac->event_id0);
+
if (sdmac->event_id1)
sdma_event_disable(sdmac, sdmac->event_id1);
@@ -1663,11 +1663,9 @@ static int sdma_config(struct dma_chan *chan,
memcpy(&sdmac->slave_config, dmaengine_cfg, sizeof(*dmaengine_cfg));
/* Set ENBLn earlier to make sure dma request triggered after that */
- if (sdmac->event_id0) {
- if (sdmac->event_id0 >= sdmac->sdma->drvdata->num_events)
- return -EINVAL;
- sdma_event_enable(sdmac, sdmac->event_id0);
- }
+ if (sdmac->event_id0 >= sdmac->sdma->drvdata->num_events)
+ return -EINVAL;
+ sdma_event_enable(sdmac, sdmac->event_id0);
if (sdmac->event_id1) {
if (sdmac->event_id1 >= sdmac->sdma->drvdata->num_events)
--
2.7.4
Add new 'imx6ul-ecspi' compatible name for ecspi and new 'imx8mq-sdma' name
for sdma since on i.mx8mm/mq chip fix ecspi errata.
Signed-off-by: Robin Gong <[email protected]>
---
arch/arm64/boot/dts/freescale/imx8mm.dtsi | 14 +++++++-------
arch/arm64/boot/dts/freescale/imx8mq.dtsi | 6 +++---
2 files changed, 10 insertions(+), 10 deletions(-)
diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
index de3498c..1945aa3 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
@@ -251,7 +251,7 @@
};
sdma2: dma-controller@302c0000 {
- compatible = "fsl,imx8mm-sdma", "fsl,imx7d-sdma";
+ compatible = "fsl,imx8mm-sdma", "fsl,imx8mq-sdma";
reg = <0x302c0000 0x10000>;
interrupts = <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&clk IMX8MM_CLK_SDMA2_ROOT>,
@@ -262,7 +262,7 @@
};
sdma3: dma-controller@302b0000 {
- compatible = "fsl,imx8mm-sdma", "fsl,imx7d-sdma";
+ compatible = "fsl,imx8mm-sdma", "fsl,imx8mq-sdma";
reg = <0x302b0000 0x10000>;
interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&clk IMX8MM_CLK_SDMA3_ROOT>,
@@ -393,7 +393,7 @@
ranges;
ecspi1: spi@30820000 {
- compatible = "fsl,imx8mm-ecspi", "fsl,imx51-ecspi";
+ compatible = "fsl,imx8mm-ecspi", "fsl,imx6ul-ecspi";
#address-cells = <1>;
#size-cells = <0>;
reg = <0x30820000 0x10000>;
@@ -407,7 +407,7 @@
};
ecspi2: spi@30830000 {
- compatible = "fsl,imx8mm-ecspi", "fsl,imx51-ecspi";
+ compatible = "fsl,imx8mm-ecspi", "fsl,imx6ul-ecspi";
#address-cells = <1>;
#size-cells = <0>;
reg = <0x30830000 0x10000>;
@@ -421,7 +421,7 @@
};
ecspi3: spi@30840000 {
- compatible = "fsl,imx8mm-ecspi", "fsl,imx51-ecspi";
+ compatible = "fsl,imx8mm-ecspi", "fsl,imx6ul-ecspi";
#address-cells = <1>;
#size-cells = <0>;
reg = <0x30840000 0x10000>;
@@ -567,11 +567,11 @@
};
sdma1: dma-controller@30bd0000 {
- compatible = "fsl,imx8mm-sdma", "fsl,imx7d-sdma";
+ compatible = "fsl,imx8mm-sdma", "fsl,imx8mq-sdma";
reg = <0x30bd0000 0x10000>;
interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&clk IMX8MM_CLK_SDMA1_ROOT>,
- <&clk IMX8MM_CLK_SDMA1_ROOT>;
+ <&clk IMX8MM_CLK_AHB>;
clock-names = "ipg", "ahb";
#dma-cells = <3>;
fsl,sdma-ram-script-name = "imx/sdma/sdma-imx7d.bin";
diff --git a/arch/arm64/boot/dts/freescale/imx8mq.dtsi b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
index 7c0b12a..f2a5d12 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mq.dtsi
@@ -607,7 +607,7 @@
ecspi1: spi@30820000 {
#address-cells = <1>;
#size-cells = <0>;
- compatible = "fsl,imx8mq-ecspi", "fsl,imx51-ecspi";
+ compatible = "fsl,imx8mq-ecspi", "fsl,imx6ul-ecspi";
reg = <0x30820000 0x10000>;
interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&clk IMX8MQ_CLK_ECSPI1_ROOT>,
@@ -619,7 +619,7 @@
ecspi2: spi@30830000 {
#address-cells = <1>;
#size-cells = <0>;
- compatible = "fsl,imx8mq-ecspi", "fsl,imx51-ecspi";
+ compatible = "fsl,imx8mq-ecspi", "fsl,imx6ul-ecspi";
reg = <0x30830000 0x10000>;
interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&clk IMX8MQ_CLK_ECSPI2_ROOT>,
@@ -631,7 +631,7 @@
ecspi3: spi@30840000 {
#address-cells = <1>;
#size-cells = <0>;
- compatible = "fsl,imx8mq-ecspi", "fsl,imx51-ecspi";
+ compatible = "fsl,imx8mq-ecspi", "fsl,imx6ul-ecspi";
reg = <0x30840000 0x10000>;
interrupts = <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&clk IMX8MQ_CLK_ECSPI3_ROOT>,
--
2.7.4
Correct ecspi/sdma compatible since ecspi errata ERR009165
not fixed on i.mx6sll chip.
Signed-off-by: Robin Gong <[email protected]>
---
arch/arm/boot/dts/imx6sll.dtsi | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/arch/arm/boot/dts/imx6sll.dtsi b/arch/arm/boot/dts/imx6sll.dtsi
index 1b4899f..03f2103 100644
--- a/arch/arm/boot/dts/imx6sll.dtsi
+++ b/arch/arm/boot/dts/imx6sll.dtsi
@@ -183,7 +183,7 @@
};
ecspi1: spi@2008000 {
- compatible = "fsl,imx6ul-ecspi", "fsl,imx51-ecspi";
+ compatible ="fsl,imx51-ecspi";
reg = <0x02008000 0x4000>;
interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>;
dmas = <&sdma 3 7 1>, <&sdma 4 7 2>;
@@ -195,7 +195,7 @@
};
ecspi2: spi@200c000 {
- compatible = "fsl,imx6ul-ecspi", "fsl,imx51-ecspi";
+ compatible = "fsl,imx51-ecspi";
reg = <0x0200c000 0x4000>;
interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
dmas = <&sdma 5 7 1>, <&sdma 6 7 2>;
@@ -207,7 +207,7 @@
};
ecspi3: spi@2010000 {
- compatible = "fsl,imx6ul-ecspi", "fsl,imx51-ecspi";
+ compatible = "fsl,imx51-ecspi";
reg = <0x02010000 0x4000>;
interrupts = <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>;
dmas = <&sdma 7 7 1>, <&sdma 8 7 2>;
@@ -219,7 +219,7 @@
};
ecspi4: spi@2014000 {
- compatible = "fsl,imx6ul-ecspi", "fsl,imx51-ecspi";
+ compatible = "fsl,imx51-ecspi";
reg = <0x02014000 0x4000>;
interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
dmas = <&sdma 9 7 1>, <&sdma 10 7 2>;
@@ -619,7 +619,7 @@
};
sdma: dma-controller@20ec000 {
- compatible = "fsl,imx6sll-sdma", "fsl,imx35-sdma";
+ compatible = "fsl,imx6q-sdma", "fsl,imx35-sdma";
reg = <0x020ec000 0x4000>;
interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&clks IMX6SLL_CLK_IPG>,
--
2.7.4
Add dma support on ecspi.
Signed-off-by: Robin Gong <[email protected]>
---
arch/arm/boot/dts/imx6ul.dtsi | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/arch/arm/boot/dts/imx6ul.dtsi b/arch/arm/boot/dts/imx6ul.dtsi
index bbf010c..880b9ee 100644
--- a/arch/arm/boot/dts/imx6ul.dtsi
+++ b/arch/arm/boot/dts/imx6ul.dtsi
@@ -226,6 +226,8 @@
clocks = <&clks IMX6UL_CLK_ECSPI1>,
<&clks IMX6UL_CLK_ECSPI1>;
clock-names = "ipg", "per";
+ dmas = <&sdma 3 7 1>, <&sdma 4 7 2>;
+ dma-names = "rx", "tx";
status = "disabled";
};
@@ -238,6 +240,8 @@
clocks = <&clks IMX6UL_CLK_ECSPI2>,
<&clks IMX6UL_CLK_ECSPI2>;
clock-names = "ipg", "per";
+ dmas = <&sdma 5 7 1>, <&sdma 6 7 2>;
+ dma-names = "rx", "tx";
status = "disabled";
};
@@ -250,6 +254,8 @@
clocks = <&clks IMX6UL_CLK_ECSPI3>,
<&clks IMX6UL_CLK_ECSPI3>;
clock-names = "ipg", "per";
+ dmas = <&sdma 7 7 1>, <&sdma 8 7 2>;
+ dma-names = "rx", "tx";
status = "disabled";
};
@@ -262,6 +268,8 @@
clocks = <&clks IMX6UL_CLK_ECSPI4>,
<&clks IMX6UL_CLK_ECSPI4>;
clock-names = "ipg", "per";
+ dmas = <&sdma 9 7 1>, <&sdma 10 7 2>;
+ dma-names = "rx", "tx";
status = "disabled";
};
--
2.7.4
Enable SDMA support on i.mx8mq/8mm chips, including enabling
CONFIG_FW_LOADER_USER_HELPER/CONFIG_FW_LOADER_USER_HELPER_FALLBACK
for firmware loaded by udev.
Signed-off-by: Robin Gong <[email protected]>
---
arch/arm64/configs/defconfig | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index 17daa97..7081817 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -203,6 +203,8 @@ CONFIG_NET_9P_VIRTIO=y
CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
CONFIG_DEVTMPFS=y
CONFIG_DEVTMPFS_MOUNT=y
+CONFIG_FW_LOADER_USER_HELPER=y
+CONFIG_FW_LOADER_USER_HELPER_FALLBACK=y
CONFIG_DMA_CMA=y
CONFIG_CMA_SIZE_MBYTES=32
CONFIG_HISILICON_LPC=y
@@ -635,6 +637,7 @@ CONFIG_RTC_DRV_IMX_SC=m
CONFIG_RTC_DRV_XGENE=y
CONFIG_DMADEVICES=y
CONFIG_DMA_BCM2835=m
+CONFIG_IMX_SDMA=y
CONFIG_K3_DMA=y
CONFIG_MV_XOR_V2=y
CONFIG_PL330_DMA=y
--
2.7.4
Hi Robin,
On Tue, Apr 23, 2019 at 10:50 AM Robin Gong <[email protected]> wrote:
>
> This reverts commit df07101e1c4a29e820df02f9989a066988b160e6.
You need to provide a detailed explanation in the commit log as to why
the revert is needed.
On Tue, Apr 23, 2019 at 10:50 AM Robin Gong <[email protected]> wrote:
>
> This reverts commit dd4b487b32a3571fdcc66062e661e3a3e360e35b.
Same here.
On Tue, Apr 23, 2019 at 10:51 AM Robin Gong <[email protected]> wrote:
>
> ECSPI issue fixed from i.mx6ul at hardware level, no need
> ERR009165 anymore on those chips such as i.mx8mq. Add i.mx6sx
> from where i.mx6ul source.
>
> Signed-off-by: Robin Gong <[email protected]>
> ---
> drivers/dma/imx-sdma.c | 43 ++++++++++++++++++++++++++++++++++++++++++-
> 1 file changed, 42 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
> index 1e20470..99c44a5 100644
> --- a/drivers/dma/imx-sdma.c
> +++ b/drivers/dma/imx-sdma.c
> @@ -419,6 +419,7 @@ struct sdma_driver_data {
> int num_events;
> struct sdma_script_start_addrs *script_addrs;
> bool check_ratio;
> + bool ecspi_fixed;
Please state the erratum number in the variable name, such as
has_err009165_fixed
On 2019-04-23 at 11:02 -0300, Fabio Estevam wrote:
> Hi Robin,
>
> On Tue, Apr 23, 2019 at 10:50 AM Robin Gong <[email protected]>
> wrote:
> >
> >
> > This reverts commit df07101e1c4a29e820df02f9989a066988b160e6.
> You need to provide a detailed explanation in the commit log as to
> why
> the revert is needed.
Okay, will address your comments into V2.
On Tue, Apr 23, 2019 at 01:51:10PM +0000, Robin Gong wrote:
> ERR009165 fix on i.mx6ul and next chip, such as i.mx6ull/i.mx8mq/i.mx8mm.
> Remove workaround on those chips. Add new i.mx6ul type for that.
>
> Signed-off-by: Robin Gong <[email protected]>
> ---
> drivers/spi/spi-imx.c | 39 +++++++++++++++++++++++++++++++++++----
> 1 file changed, 35 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c
> index eb56eac..2e5e978 100644
> --- a/drivers/spi/spi-imx.c
> +++ b/drivers/spi/spi-imx.c
> @@ -57,6 +57,7 @@ enum spi_imx_devtype {
> IMX35_CSPI, /* CSPI on all i.mx except above */
> IMX51_ECSPI, /* ECSPI on i.mx51 */
> IMX53_ECSPI, /* ECSPI on i.mx53 and later */
> + IMX6UL_ECSPI, /* ERR009165 fix from i.mx6ul */
> };
>
> struct spi_imx_data;
> @@ -128,7 +129,8 @@ static inline int is_imx35_cspi(struct spi_imx_data *d)
>
> static inline int is_imx51_ecspi(struct spi_imx_data *d)
> {
> - return d->devtype_data->devtype == IMX51_ECSPI;
> + return d->devtype_data->devtype == IMX51_ECSPI ||
> + d->devtype_data->devtype == IMX6UL_ECSPI;
> }
>
> static inline int is_imx53_ecspi(struct spi_imx_data *d)
> @@ -585,9 +587,16 @@ static int mx51_ecspi_prepare_transfer(struct spi_imx_data *spi_imx,
> ctrl |= mx51_ecspi_clkdiv(spi_imx, t->speed_hz, &clk);
> spi_imx->spi_bus_clk = clk;
>
> - /* ERR009165: work in XHC mode as PIO */
> - if (spi_imx->usedma)
> - ctrl &= ~MX51_ECSPI_CTRL_SMC;
> + /*
> + * ERR009165: work in XHC mode instead of SMC as PIO on the chips
> + * before i.mx6ul.
> + */
> + if (spi_imx->usedma) {
> + if (spi_imx->devtype_data->devtype == IMX6UL_ECSPI)
> + ctrl |= MX51_ECSPI_CTRL_SMC;
> + else
> + ctrl &= ~MX51_ECSPI_CTRL_SMC;
> + }
>
> writel(ctrl, spi_imx->base + MX51_ECSPI_CTRL);
>
> @@ -615,6 +624,8 @@ static void mx51_setup_wml(struct spi_imx_data *spi_imx)
> {
> u32 tx_wml = 0;
>
> + if (spi_imx->devtype_data->devtype == IMX6UL_ECSPI)
> + tx_wml = spi_imx->wml;
This if clause has to be adjusted for every new SoC which doesn't have
this issue. Better introduce a has_err009165 boolean flag to the driver
data and set it where necessary.
Sascha
--
Pengutronix e.K. | |
Industrial Linux Solutions | http://www.pengutronix.de/ |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
On Tue, Apr 23, 2019 at 01:51:45PM +0000, Robin Gong wrote:
> Correct ecspi/sdma compatible since ecspi errata ERR009165
> not fixed on i.mx6sll chip.
>
> Signed-off-by: Robin Gong <[email protected]>
> ---
> arch/arm/boot/dts/imx6sll.dtsi | 10 +++++-----
> 1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/arch/arm/boot/dts/imx6sll.dtsi b/arch/arm/boot/dts/imx6sll.dtsi
> index 1b4899f..03f2103 100644
> --- a/arch/arm/boot/dts/imx6sll.dtsi
> +++ b/arch/arm/boot/dts/imx6sll.dtsi
> @@ -183,7 +183,7 @@
> };
>
> ecspi1: spi@2008000 {
> - compatible = "fsl,imx6ul-ecspi", "fsl,imx51-ecspi";
> + compatible ="fsl,imx51-ecspi";
Where is the fsl,imx6sll-ecspi compatible that would have prevented us
from changing this devicetree now? You should at least add it now.
Sascha
--
Pengutronix e.K. | |
Industrial Linux Solutions | http://www.pengutronix.de/ |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
On 2019-04-24 at 08:37 +0200, [email protected] wrote:
> On Tue, Apr 23, 2019 at 01:51:45PM +0000, Robin Gong wrote:
> >
> > Correct ecspi/sdma compatible since ecspi errata ERR009165
> > not fixed on i.mx6sll chip.
> >
> > Signed-off-by: Robin Gong <[email protected]>
> > ---
> > arch/arm/boot/dts/imx6sll.dtsi | 10 +++++-----
> > 1 file changed, 5 insertions(+), 5 deletions(-)
> >
> > diff --git a/arch/arm/boot/dts/imx6sll.dtsi
> > b/arch/arm/boot/dts/imx6sll.dtsi
> > index 1b4899f..03f2103 100644
> > --- a/arch/arm/boot/dts/imx6sll.dtsi
> > +++ b/arch/arm/boot/dts/imx6sll.dtsi
> > @@ -183,7 +183,7 @@
> > };
> >
> > ecspi1: spi@2008000 {
> > - compatible = "fsl,imx6ul-
> > ecspi", "fsl,imx51-ecspi";
> > + compatible ="fsl,imx51-
> > ecspi";
> Where is the fsl,imx6sll-ecspi compatible that would have prevented
> us
> from changing this devicetree now? You should at least add it now.
Will add fsl,imx6sll-ecspi in V2.
>
> Sascha
>
> --
> Pengutronix
> e.K. | |
> Industrial Linux Solutions | https://eur01.safelinks.
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> ta=02%7C01%7Cyibin.gong%40nxp.com%7Cfa1dae077c1c4b191b2f08d6c87f6016%
> 7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C636916846728697990&s
> data=yTr9jx7lIodCEaS6Cb0mwpkSC1syGGJvFXox4d3%2BnME%3D&reserved=0
> |
> Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-
> 0 |
> Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-
> 5555 |
On 23-04-19, 13:50, Robin Gong wrote:
> This reverts commit df07101e1c4a29e820df02f9989a066988b160e6.
Please add the commit title in canonical format. Also explain why this
should be reverted
>
> Signed-off-by: Robin Gong <[email protected]>
> ---
> arch/arm/boot/dts/imx6q.dtsi | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm/boot/dts/imx6q.dtsi b/arch/arm/boot/dts/imx6q.dtsi
> index d038f41..7175898 100644
> --- a/arch/arm/boot/dts/imx6q.dtsi
> +++ b/arch/arm/boot/dts/imx6q.dtsi
> @@ -172,7 +172,7 @@
> clocks = <&clks IMX6Q_CLK_ECSPI5>,
> <&clks IMX6Q_CLK_ECSPI5>;
> clock-names = "ipg", "per";
> - dmas = <&sdma 11 8 1>, <&sdma 12 8 2>;
> + dmas = <&sdma 11 7 1>, <&sdma 12 7 2>;
> dma-names = "rx", "tx";
> status = "disabled";
> };
> --
> 2.7.4
>
--
~Vinod
On 23-04-19, 13:50, Robin Gong wrote:
> This reverts commit ad0d92d7ba6aecbe2705907c38ff8d8be4da1e9c, because
Please fix this as well
> in spi-imx case, burst length may be changed dynamically.
So what is the solution to handle different burst lengths, pls
explain...
>
> Signed-off-by: Robin Gong <[email protected]>
> ---
> drivers/dma/imx-sdma.c | 7 -------
> 1 file changed, 7 deletions(-)
>
> diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
> index 99d9f43..407a56e 100644
> --- a/drivers/dma/imx-sdma.c
> +++ b/drivers/dma/imx-sdma.c
> @@ -377,7 +377,6 @@ struct sdma_channel {
> unsigned long watermark_level;
> u32 shp_addr, per_addr;
> enum dma_status status;
> - bool context_loaded;
> struct imx_dma_data data;
> struct work_struct terminate_worker;
> };
> @@ -988,9 +987,6 @@ static int sdma_load_context(struct sdma_channel *sdmac)
> int ret;
> unsigned long flags;
>
> - if (sdmac->context_loaded)
> - return 0;
> -
> if (sdmac->direction == DMA_DEV_TO_MEM)
> load_address = sdmac->pc_from_device;
> else if (sdmac->direction == DMA_DEV_TO_DEV)
> @@ -1033,8 +1029,6 @@ static int sdma_load_context(struct sdma_channel *sdmac)
>
> spin_unlock_irqrestore(&sdma->channel_0_lock, flags);
>
> - sdmac->context_loaded = true;
> -
> return ret;
> }
>
> @@ -1074,7 +1068,6 @@ static void sdma_channel_terminate_work(struct work_struct *work)
> sdmac->desc = NULL;
> spin_unlock_irqrestore(&sdmac->vc.lock, flags);
> vchan_dma_desc_free_list(&sdmac->vc, &head);
> - sdmac->context_loaded = false;
> }
>
> static int sdma_disable_channel_async(struct dma_chan *chan)
> --
> 2.7.4
>
--
~Vinod