diff options
Diffstat (limited to 'drivers/mmc/fsl_esdhc_imx.c')
| -rw-r--r-- | drivers/mmc/fsl_esdhc_imx.c | 47 |
1 files changed, 39 insertions, 8 deletions
diff --git a/drivers/mmc/fsl_esdhc_imx.c b/drivers/mmc/fsl_esdhc_imx.c index 34c2dceb18..01a94428e7 100644 --- a/drivers/mmc/fsl_esdhc_imx.c +++ b/drivers/mmc/fsl_esdhc_imx.c @@ -760,7 +760,6 @@ static int esdhc_set_timing(struct mmc *mmc) case MMC_HS_400_ES: mixctrl |= MIX_CTRL_DDREN | MIX_CTRL_HS400_EN; esdhc_write32(®s->mixctrl, mixctrl); - esdhc_set_strobe_dll(mmc); break; case MMC_HS: case MMC_HS_52: @@ -933,6 +932,23 @@ static int esdhc_set_ios_common(struct fsl_esdhc_priv *priv, struct mmc *mmc) int ret __maybe_unused; u32 clock; +#ifdef MMC_SUPPORTS_TUNING + /* + * call esdhc_set_timing() before update the clock rate, + * This is because current we support DDR and SDR mode, + * Once the DDR_EN bit is set, the card clock will be + * divide by 2 automatically. So need to do this before + * setting clock rate. + */ + if (priv->mode != mmc->selected_mode) { + ret = esdhc_set_timing(mmc); + if (ret) { + printf("esdhc_set_timing error %d\n", ret); + return ret; + } + } +#endif + /* Set the clock speed */ clock = mmc->clock; if (clock < mmc->cfg->f_min) @@ -957,13 +973,13 @@ static int esdhc_set_ios_common(struct fsl_esdhc_priv *priv, struct mmc *mmc) #endif } - if (priv->mode != mmc->selected_mode) { - ret = esdhc_set_timing(mmc); - if (ret) { - printf("esdhc_set_timing error %d\n", ret); - return ret; - } - } + /* + * For HS400/HS400ES mode, make sure set the strobe dll in the + * target clock rate. So call esdhc_set_strobe_dll() after the + * clock updated. + */ + if (mmc->selected_mode == MMC_HS_400 || mmc->selected_mode == MMC_HS_400_ES) + esdhc_set_strobe_dll(mmc); if (priv->signal_voltage != mmc->signal_voltage) { ret = esdhc_set_voltage(mmc); @@ -1646,6 +1662,20 @@ static int fsl_esdhc_set_enhanced_strobe(struct udevice *dev) } #endif +static int fsl_esdhc_wait_dat0(struct udevice *dev, int state, + int timeout_us) +{ + int ret; + u32 tmp; + struct fsl_esdhc_priv *priv = dev_get_priv(dev); + struct fsl_esdhc *regs = priv->esdhc_regs; + + ret = readx_poll_timeout(esdhc_read32, ®s->prsstat, tmp, + !!(tmp & PRSSTAT_DAT0) == !!state, + timeout_us); + return ret; +} + static const struct dm_mmc_ops fsl_esdhc_ops = { .get_cd = fsl_esdhc_get_cd, .send_cmd = fsl_esdhc_send_cmd, @@ -1656,6 +1686,7 @@ static const struct dm_mmc_ops fsl_esdhc_ops = { #if CONFIG_IS_ENABLED(MMC_HS400_ES_SUPPORT) .set_enhanced_strobe = fsl_esdhc_set_enhanced_strobe, #endif + .wait_dat0 = fsl_esdhc_wait_dat0, }; #endif |