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mmc: fsl_esdhc_imx: add HS400 Enhanced strobe support

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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>
This commit is contained in:
Peng Fan
2019-07-10 09:35:26 +00:00
parent b0155ac63c
commit e9c2255267
1 changed files with 20 additions and 0 deletions
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20
drivers/mmc/fsl_esdhc_imx.c
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@@ -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 +1596,21 @@ 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 int 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);
return 0;
}
#endif
static const struct dm_mmc_ops fsl_esdhc_ops = {
.get_cd = fsl_esdhc_get_cd,
.send_cmd = fsl_esdhc_send_cmd,
@@ -1601,6 +1618,9 @@ 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