[U-Boot] [PATCH 5/7] mmc: fsl_esdhc_imx: add HS400 Enhanced strobe support

Implement set_enhanced_strobe hook for fsl_esdhc_imx, ,in esdhc_set_timing and esdhc_change_pinstate, also handle HS400_ES.

Signed-off-by: Peng Fan peng.fan@nxp.com --- drivers/mmc/fsl_esdhc_imx.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)

diff --git a/drivers/mmc/fsl_esdhc_imx.c b/drivers/mmc/fsl_esdhc_imx.c index 32d34ccf7c..c496780f2c 100644 --- a/drivers/mmc/fsl_esdhc_imx.c +++ b/drivers/mmc/fsl_esdhc_imx.c @@ -703,6 +703,7 @@ static int esdhc_change_pinstate(struct udevice *dev) case UHS_SDR104: case MMC_HS_200: case MMC_HS_400: + case MMC_HS_400_ES: ret = pinctrl_select_state(dev, "state_200mhz"); break; default: @@ -773,6 +774,7 @@ static int esdhc_set_timing(struct mmc *mmc) writel(mixctrl, &regs->mixctrl); break; case MMC_HS_400: + case MMC_HS_400_ES: mixctrl |= MIX_CTRL_DDREN | MIX_CTRL_HS400_EN; writel(mixctrl, &regs->mixctrl); esdhc_set_strobe_dll(mmc); @@ -1594,6 +1596,19 @@ static int fsl_esdhc_set_ios(struct udevice *dev) return esdhc_set_ios_common(priv, &plat->mmc); }

+#if CONFIG_IS_ENABLED(MMC_HS400_ES_SUPPORT) +static void fsl_esdhc_set_enhanced_strobe(struct udevice *dev) +{ + struct fsl_esdhc_priv *priv = dev_get_priv(dev); + struct fsl_esdhc *regs = priv->esdhc_regs; + u32 m; + + m = readl(&regs->mixctrl); + m |= MIX_CTRL_HS400_ES; + writel(m, &regs->mixctrl); +} +#endif + static const struct dm_mmc_ops fsl_esdhc_ops = { .get_cd = fsl_esdhc_get_cd, .send_cmd = fsl_esdhc_send_cmd, @@ -1601,6 +1616,9 @@ static const struct dm_mmc_ops fsl_esdhc_ops = { #ifdef MMC_SUPPORTS_TUNING .execute_tuning = fsl_esdhc_execute_tuning, #endif +#if CONFIG_IS_ENABLED(MMC_HS400_ES_SUPPORT) + .set_enhanced_strobe = fsl_esdhc_set_enhanced_strobe, +#endif }; #endif