UHS_REG should be cleared for non-DDR mode. But currently there is
no way to clear DDR mode, if it is already set once. This patch adds
clearing DDR mode for non-DDD mode.
Signed-off-by: Seungwon Jeon <tgih.jun@xxxxxxxxxxx>
---
drivers/mmc/host/dw_mmc.c | 11 +++++++----
1 files changed, 7 insertions(+), 4 deletions(-)
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index c583b94..94e2238 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -707,12 +707,15 @@ static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
break;
}
+ regs = mci_readl(slot->host, UHS_REG);
+
/* DDR mode set */
- if (ios->timing == MMC_TIMING_UHS_DDR50) {
- regs = mci_readl(slot->host, UHS_REG);
+ if (ios->timing == MMC_TIMING_UHS_DDR50)
regs |= (0x1 << slot->id) << 16;
- mci_writel(slot->host, UHS_REG, regs);
- }
+ else
+ regs &= ~(0x1 << slot->id) << 16;
+
+ mci_writel(slot->host, UHS_REG, regs);
if (ios->clock) {
/*
--
1.7.0.4
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