summaryrefslogtreecommitdiff
path: root/drivers/spi/spi-imx.c
diff options
context:
space:
mode:
authorRobin Gong <yibin.gong@nxp.com>2021-07-14 13:20:47 +0300
committerShawn Guo <shawnguo@kernel.org>2021-07-23 06:19:19 +0300
commit980f884866eed4dda2a18de888c5a67dde67d640 (patch)
treefc87c93e380f1788a988233916efa03b9fb967e0 /drivers/spi/spi-imx.c
parenta4965888e64ec927110cbf6a3c396d2355931a4a (diff)
downloadlinux-980f884866eed4dda2a18de888c5a67dde67d640.tar.xz
spi: imx: fix ERR009165
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 <yibin.gong@nxp.com> Reviewed-by: Lucas Stach <l.stach@pengutronix.de> Acked-by: Mark Brown <broonie@kernel.org> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'drivers/spi/spi-imx.c')
-rw-r--r--drivers/spi/spi-imx.c10
1 files changed, 3 insertions, 7 deletions
diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c
index 39dc02e366f4..1f43ad69cbf5 100644
--- a/drivers/spi/spi-imx.c
+++ b/drivers/spi/spi-imx.c
@@ -591,8 +591,8 @@ static int mx51_ecspi_prepare_transfer(struct spi_imx_data *spi_imx,
ctrl |= mx51_ecspi_clkdiv(spi_imx, spi_imx->spi_bus_clk, &clk);
spi_imx->spi_bus_clk = clk;
- if (spi_imx->usedma)
- ctrl |= MX51_ECSPI_CTRL_SMC;
+ /* ERR009165: work in XHC mode as PIO */
+ ctrl &= ~MX51_ECSPI_CTRL_SMC;
writel(ctrl, spi_imx->base + MX51_ECSPI_CTRL);
@@ -623,7 +623,7 @@ static void mx51_setup_wml(struct spi_imx_data *spi_imx)
* 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(0) |
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);
@@ -1239,10 +1239,6 @@ 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: */