Am Mittwoch, dem 14.07.2021 um 18:20 +0800 schrieb Robin Gong:
> ECSPI issue fixed from i.mx6ul at hardware level, no need
> ERR009165 anymore on those chips such as i.mx8mq.
>
> Signed-off-by: Robin Gong <yibin.gong@xxxxxxx>
> Acked-by: Vinod Koul <vkoul@xxxxxxxxxx>
Reviewed-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
> ---
> drivers/dma/imx-sdma.c | 26 ++++++++++++++++++++++++--
> 1 file changed, 24 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
> index 5969df8..cfcd413 100644
> --- a/drivers/dma/imx-sdma.c
> +++ b/drivers/dma/imx-sdma.c
> @@ -476,6 +476,13 @@ struct sdma_driver_data {
> int num_events;
> struct sdma_script_start_addrs *script_addrs;
> bool check_ratio;
> + /*
> + * ecspi ERR009165 fixed should be done in sdma script
> + * and it has been fixed in soc from i.mx6ul.
> + * please get more information from the below link:
> + * https://www.nxp.com/docs/en/errata/IMX6DQCE.pdf
> + */
> + bool ecspi_fixed;
> };
>
> struct sdma_engine {
> @@ -596,6 +603,13 @@ static struct sdma_driver_data sdma_imx6q = {
> .script_addrs = &sdma_script_imx6q,
> };
>
> +static struct sdma_driver_data sdma_imx6ul = {
> + .chnenbl0 = SDMA_CHNENBL0_IMX35,
> + .num_events = 48,
> + .script_addrs = &sdma_script_imx6q,
> + .ecspi_fixed = true,
> +};
> +
> static struct sdma_script_start_addrs sdma_script_imx7d = {
> .ap_2_ap_addr = 644,
> .uart_2_mcu_addr = 819,
> @@ -629,6 +643,7 @@ static const struct of_device_id sdma_dt_ids[] = {
> { .compatible = "fsl,imx31-sdma", .data = &sdma_imx31, },
> { .compatible = "fsl,imx25-sdma", .data = &sdma_imx25, },
> { .compatible = "fsl,imx7d-sdma", .data = &sdma_imx7d, },
> + { .compatible = "fsl,imx6ul-sdma", .data = &sdma_imx6ul, },
> { .compatible = "fsl,imx8mq-sdma", .data = &sdma_imx8mq, },
> { /* sentinel */ }
> };
> @@ -948,8 +963,15 @@ static void sdma_get_pc(struct sdma_channel *sdmac,
> 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;
> - sdmac->is_ram_script = true;
> +
> + /* Use rom script mcu_2_app if ERR009165 fixed */
> + if (sdmac->sdma->drvdata->ecspi_fixed) {
> + emi_2_per = sdma->script_addrs->mcu_2_app_addr;
> + } else {
> + emi_2_per = sdma->script_addrs->mcu_2_ecspi_addr;
> + sdmac->is_ram_script = true;
> + }
> +
> break;
> case IMX_DMATYPE_EXT:
> case IMX_DMATYPE_SSI:
