Am Montag, dem 12.07.2021 um 03:48 +0000 schrieb Robin Gong: > On 09/07/21 17:42 Lucas Stach <l.stach@xxxxxxxxxxxxxx> wrote: > > Am Mittwoch, dem 07.04.2021 um 23:30 +0800 schrieb Robin Gong: > > > ERR009165 fixed on i.mx6ul/6ull/6sll. All other i.mx6/7 and i.mx8m/8mm > > > still need this errata. Please refer to nxp official errata document > > > from > > https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.n > > xp.com%2F&data=04%7C01%7Cyibin.gong%40nxp.com%7C48156bc93d > > c84ac26e9d08d942bdc0ac%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0% > > 7C1%7C637614205017900475%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4 > > wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&a > > mp;sdata=keYQubzt1jWrKhaxXr40RL41vzFuIn7x1Sasa3p%2F9Xo%3D&res > > erved=0 . > > > > > > For removing workaround on those chips. Add new i.mx6ul type. > > > > > > Signed-off-by: Robin Gong <yibin.gong@xxxxxxx> > > > Acked-by: Mark Brown <broonie@xxxxxxxxxx> > > > --- > > > drivers/spi/spi-imx.c | 47 > > > +++++++++++++++++++++++++++++++++++++++++++---- > > > 1 file changed, 43 insertions(+), 4 deletions(-) > > > > > > diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c index > > > cf235b9..d18ee25 100644 > > > --- a/drivers/spi/spi-imx.c > > > +++ b/drivers/spi/spi-imx.c > > > @@ -59,6 +59,7 @@ 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 */ > > > > This patch could be a lot smaller if you didn't introduce a new devtype. You > > could just use the IMX51_ECSPI in imx6ul_ecspi_devtype_data, as all you care > > about as a relevant difference is the tx_glitch_fixed property, which isn't tied > > to the devtype. > I knew tx_glitch_fixed was enough but I still prefer to add new 'IMX6UL_ECSPI' because > we can clearly choose the right IP which has fix the issue while legacy IMX51 if it's not > fixed by dts. > Sorry, I don't follow this reasoning. You are not using the new IMX6UL_ECSPI devtype in any way in this patch, other than a single location, where you just handle it the same as the IMX51_ECSPI devtype. Regards, Lucas > > > > > }; > > > > > > struct spi_imx_data; > > > @@ -78,6 +79,11 @@ struct spi_imx_devtype_data { > > > bool has_slavemode; > > > unsigned int fifo_size; > > > bool dynamic_burst; > > > + /* > > > + * ERR009165 fixed or not: > > > + * > > https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.n > > xp.com%2Fdocs%2Fen%2Ferrata%2FIMX6DQCE.pdf&data=04%7C01%7C > > yibin.gong%40nxp.com%7C48156bc93dc84ac26e9d08d942bdc0ac%7C686ea > > 1d3bc2b4c6fa92cd99c5c301635%7C0%7C1%7C637614205017900475%7CU > > nknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6 > > Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=J9iZb93uN1VEriN%2F2GAE > > TWxdv4n%2FD6ZXteMCFkB8KHM%3D&reserved=0 > > > + */ > > > + bool tx_glitch_fixed; > > > enum spi_imx_devtype devtype; > > > }; > > > > > > @@ -134,6 +140,11 @@ static inline int is_imx51_ecspi(struct spi_imx_data > > *d) > > > return d->devtype_data->devtype == IMX51_ECSPI; } > > > > > > +static inline int is_imx6ul_ecspi(struct spi_imx_data *d) { > > > + return d->devtype_data->devtype == IMX6UL_ECSPI; } > > > + > > > static inline int is_imx53_ecspi(struct spi_imx_data *d) { > > > return d->devtype_data->devtype == IMX53_ECSPI; @@ -593,8 +604,14 > > @@ > > > 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 */ > > > - 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 && spi_imx->devtype_data->tx_glitch_fixed) > > > + ctrl |= MX51_ECSPI_CTRL_SMC; > > > + else > > > + ctrl &= ~MX51_ECSPI_CTRL_SMC; > > > > > > writel(ctrl, spi_imx->base + MX51_ECSPI_CTRL); > > > > > > @@ -620,12 +637,16 @@ 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; > > > + > > > + if (spi_imx->devtype_data->tx_glitch_fixed) > > > + tx_wml = spi_imx->wml; > > > /* > > > * 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(0) | > > > + 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); > > @@ -1019,6 > > > +1040,23 @@ 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, > > > + .tx_glitch_fixed = true, > > > + .disable = mx51_ecspi_disable, > > > + .devtype = IMX6UL_ECSPI, > > > +}; > > > + > > > static const struct of_device_id spi_imx_dt_ids[] = { > > > { .compatible = "fsl,imx1-cspi", .data = &imx1_cspi_devtype_data, }, > > > { .compatible = "fsl,imx21-cspi", .data = &imx21_cspi_devtype_data, > > > }, @@ -1027,6 +1065,7 @@ 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); @@ -1604,7 +1643,7 @@ > > static > > > int spi_imx_probe(struct platform_device *pdev) > > > spi_imx->bitbang.master->mode_bits = SPI_CPOL | SPI_CPHA | > > SPI_CS_HIGH \ > > > | SPI_NO_CS; > > > if (is_imx35_cspi(spi_imx) || is_imx51_ecspi(spi_imx) || > > > - is_imx53_ecspi(spi_imx)) > > > + is_imx53_ecspi(spi_imx) || is_imx6ul_ecspi(spi_imx)) > > > spi_imx->bitbang.master->mode_bits |= SPI_LOOP | SPI_READY; > > > > > > spi_imx->spi_drctl = spi_drctl; > > >
