Signed-off-by: Joakim Tjernlund <joakim.tjernl...@transmode.se>
---
drivers/mmc/host/sdhci-of-esdhc.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c
b/drivers/mmc/host/sdhci-of-esdhc.c
index 22e9111..7130130 100644
--- a/drivers/mmc/host/sdhci-of-esdhc.c
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -82,6 +82,10 @@ static u8 esdhc_readb(struct sdhci_host *host, int reg)
/* fixup the result */
ret &= ~SDHCI_CTRL_DMA_MASK;
ret |= dma_bits;
+
+ /* 8BIT is bit 29 in Control register */
+ ret |= ((ret << 3) & SDHCI_CTRL_8BITBUS);
+ ret &= ~(SDHCI_CTRL_8BITBUS >> 3);
}
return ret;
@@ -134,6 +138,10 @@ static void esdhc_writeb(struct sdhci_host *host, u8 val,
int reg)
dma_bits);
val &= ~SDHCI_CTRL_DMA_MASK;
val |= in_be32(host->ioaddr + reg) & SDHCI_CTRL_DMA_MASK;
+
+ /* 8BIT is bit 29 in Control register */
+ val |= ((val & SDHCI_CTRL_8BITBUS) >> 3);
+ val = (val & ~SDHCI_CTRL_8BITBUS);
}
/* Prevent SDHCI core from writing reserved bits (e.g. HISPD). */
@@ -252,6 +260,8 @@ static void esdhc_of_platform_init(struct sdhci_host *host)
if (vvn > VENDOR_V_22)
host->quirks &= ~SDHCI_QUIRK_NO_BUSY_IRQ;
+
+ host->mmc->caps |= MMC_CAP_8_BIT_DATA;
}
static void esdhc_pltfm_set_bus_width(struct sdhci_host *host, int width)
--
2.3.6
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