| Message ID | 1626201709-19643-10-git-send-email-yibin.gong@nxp.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | add ecspi ERR009165 for i.mx6/7 soc family | expand |
Am Mittwoch, dem 14.07.2021 um 02:41 +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@nxp.com> > Acked-by: Vinod Koul <vkoul@kernel.org> > --- > drivers/dma/imx-sdma.c | 27 +++++++++++++++++++++++++-- > 1 file changed, 25 insertions(+), 2 deletions(-) > > diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c > index 4cb2e84..211299f 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 */ } > }; > @@ -947,8 +962,16 @@ 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; > + sdmac->is_ram_script = false; This second line in this clause isn't needed. Please just move this "sdmac->is_ram_script = false;" to the top of this function, so it's easy to see that this is the default value. Regards, Lucas > + } 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:
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c index 4cb2e84..211299f 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 */ } }; @@ -947,8 +962,16 @@ 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; + sdmac->is_ram_script = false; + } 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: