| Message ID | 1422930353-4339-1-git-send-email-b38343@freescale.com (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | a02bb401f8ae264be782ee57d98bdd99f14c8022 |
| Headers | show |
On Tue, Feb 03, 2015 at 10:25:53AM +0800, Robin Gong wrote: > For TKT238285 hardware issue which may cause txfifo store data twice can only > be caught on i.mx6dl, we use pio mode instead of DMA mode on i.mx6dl. Applied, thanks.
diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c index 961b97d..fe1b769 100644 --- a/drivers/spi/spi-imx.c +++ b/drivers/spi/spi-imx.c @@ -823,6 +823,10 @@ static int spi_imx_sdma_init(struct device *dev, struct spi_imx_data *spi_imx, struct dma_slave_config slave_config = {}; int ret; + /* use pio mode for i.mx6dl chip TKT238285 */ + if (of_machine_is_compatible("fsl,imx6dl")) + return 0; + /* Prepare for TX DMA: */ master->dma_tx = dma_request_slave_channel(dev, "tx"); if (!master->dma_tx) {
For TKT238285 hardware issue which may cause txfifo store data twice can only be caught on i.mx6dl, we use pio mode instead of DMA mode on i.mx6dl. Signed-off-by: Robin Gong <b38343@freescale.com> --- drivers/spi/spi-imx.c | 4 ++++ 1 file changed, 4 insertions(+)