diff options
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/sdhci-esdhc-imx.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index fda07eb2ed15..a3b82d183686 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -112,6 +112,12 @@ #define ESDHC_FLAG_STD_TUNING BIT(5) /* The IP has SDHCI_CAPABILITIES_1 register */ #define ESDHC_FLAG_HAVE_CAP1 BIT(6) +/* + * The IP has errata ERR004536 + * uSDHC: ADMA Length Mismatch Error occurs if the AHB read access is slow, + * when reading data from the card + */ +#define ESDHC_FLAG_ERR004536 BIT(7) struct esdhc_soc_data { u32 flags; @@ -139,7 +145,7 @@ static struct esdhc_soc_data usdhc_imx6q_data = { static struct esdhc_soc_data usdhc_imx6sl_data = { .flags = ESDHC_FLAG_USDHC | ESDHC_FLAG_STD_TUNING - | ESDHC_FLAG_HAVE_CAP1, + | ESDHC_FLAG_HAVE_CAP1 | ESDHC_FLAG_ERR004536, }; struct pltfm_imx_data { @@ -991,6 +997,13 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev) writel(0x08100810, host->ioaddr + ESDHC_WTMK_LVL); host->quirks2 |= SDHCI_QUIRK2_PRESET_VALUE_BROKEN; host->mmc->caps |= MMC_CAP_1_8V_DDR; + + /* + * errata ESDHC_FLAG_ERR004536 fix for MX6Q TO1.2 and MX6DL + * TO1.1, it's harmless for MX6SL + */ + writel(readl(host->ioaddr + 0x6c) | BIT(7), + host->ioaddr + 0x6c); } if (imx_data->socdata->flags & ESDHC_FLAG_MAN_TUNING) @@ -1002,6 +1015,9 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev) ESDHC_STD_TUNING_EN | ESDHC_TUNING_START_TAP, host->ioaddr + ESDHC_TUNING_CTRL); + if (imx_data->socdata->flags & ESDHC_FLAG_ERR004536) + host->quirks |= SDHCI_QUIRK_BROKEN_ADMA; + boarddata = &imx_data->boarddata; if (sdhci_esdhc_imx_probe_dt(pdev, host, boarddata) < 0) { if (!host->mmc->parent->platform_data) { |