diff options
Diffstat (limited to 'drivers/mmc/host/sdhci_am654.c')
| -rw-r--r-- | drivers/mmc/host/sdhci_am654.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci_am654.c b/drivers/mmc/host/sdhci_am654.c index 8e0eb0acf442..47344e29a4c9 100644 --- a/drivers/mmc/host/sdhci_am654.c +++ b/drivers/mmc/host/sdhci_am654.c @@ -155,6 +155,7 @@ struct sdhci_am654_data { u32 tuning_loop; #define SDHCI_AM654_QUIRK_FORCE_CDTEST BIT(0) +#define SDHCI_AM654_QUIRK_DISABLE_HS400 BIT(1) }; struct window { @@ -734,6 +735,7 @@ static int sdhci_am654_init(struct sdhci_host *host) { struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); struct sdhci_am654_data *sdhci_am654 = sdhci_pltfm_priv(pltfm_host); + struct device *dev = mmc_dev(host->mmc); u32 ctl_cfg_2 = 0; u32 mask; u32 val; @@ -789,6 +791,12 @@ static int sdhci_am654_init(struct sdhci_host *host) if (ret) goto err_cleanup_host; + if (sdhci_am654->quirks & SDHCI_AM654_QUIRK_DISABLE_HS400 && + host->mmc->caps2 & (MMC_CAP2_HS400 | MMC_CAP2_HS400_ES)) { + dev_info(dev, "HS400 mode not supported on this silicon revision, disabling it\n"); + host->mmc->caps2 &= ~(MMC_CAP2_HS400 | MMC_CAP2_HS400_ES); + } + ret = __sdhci_add_host(host); if (ret) goto err_cleanup_host; @@ -852,6 +860,12 @@ static int sdhci_am654_get_of_property(struct platform_device *pdev, return 0; } +static const struct soc_device_attribute sdhci_am654_descope_hs400[] = { + { .family = "AM62PX", .revision = "SR1.0" }, + { .family = "AM62PX", .revision = "SR1.1" }, + { /* sentinel */ } +}; + static const struct of_device_id sdhci_am654_of_match[] = { { .compatible = "ti,am654-sdhci-5.1", @@ -943,6 +957,10 @@ static int sdhci_am654_probe(struct platform_device *pdev) goto err_pltfm_free; } + soc = soc_device_match(sdhci_am654_descope_hs400); + if (soc) + sdhci_am654->quirks |= SDHCI_AM654_QUIRK_DISABLE_HS400; + host->mmc_host_ops.execute_tuning = sdhci_am654_execute_tuning; pm_runtime_get_noresume(dev); |