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-rw-r--r--drivers/mmc/host/sdhci-pxav3.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c
index f1c6362648c1..1529efcbb733 100644
--- a/drivers/mmc/host/sdhci-pxav3.c
+++ b/drivers/mmc/host/sdhci-pxav3.c
@@ -118,6 +118,20 @@ static int mv_conf_mbus_windows(struct platform_device *pdev,
return 0;
}
+static int armada_38x_quirks(struct sdhci_host *host)
+{
+ host->quirks |= SDHCI_QUIRK_MISSING_CAPS;
+ /*
+ * According to erratum 'FE-2946959' both SDR50 and DDR50
+ * modes require specific clock adjustments in SDIO3
+ * Configuration register, if the adjustment is not done,
+ * remove them from the capabilities.
+ */
+ host->caps1 = sdhci_readl(host, SDHCI_CAPABILITIES_1);
+ host->caps1 &= ~(SDHCI_SUPPORT_SDR50 | SDHCI_SUPPORT_DDR50);
+ return 0;
+}
+
static void pxav3_reset(struct sdhci_host *host, u8 mask)
{
struct platform_device *pdev = to_platform_device(mmc_dev(host->mmc));
@@ -319,6 +333,9 @@ static int sdhci_pxav3_probe(struct platform_device *pdev)
clk_prepare_enable(pxa->clk_core);
if (of_device_is_compatible(np, "marvell,armada-380-sdhci")) {
+ ret = armada_38x_quirks(host);
+ if (ret < 0)
+ goto err_clk_get;
ret = mv_conf_mbus_windows(pdev, mv_mbus_dram_info());
if (ret < 0)
goto err_mbus_win;