Am Mittwoch, dem 14.07.2021 um 02:41 +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://www.nxp.com/ . > > 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> Reviewed-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx> > --- > drivers/spi/spi-imx.c | 39 ++++++++++++++++++++++++++++++++++++--- > 1 file changed, 36 insertions(+), 3 deletions(-) > > diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c > index 61e4fa0..63a8d7b 100644 > --- a/drivers/spi/spi-imx.c > +++ b/drivers/spi/spi-imx.c > @@ -77,6 +77,11 @@ struct spi_imx_devtype_data { > bool has_slavemode; > unsigned int fifo_size; > bool dynamic_burst; > + /* > + * ERR009165 fixed or not: > + * https://www.nxp.com/docs/en/errata/IMX6DQCE.pdf > + */ > + bool tx_glitch_fixed; > enum spi_imx_devtype devtype; > }; > > @@ -608,8 +613,14 @@ 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; > > - /* 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); > > @@ -618,12 +629,16 @@ 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); > @@ -1014,6 +1029,23 @@ 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 = IMX51_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, }, > @@ -1022,6 +1054,7 @@ 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);