Along with using new mode it fixes eMMC instability on Pinebook
Signed-off-by: Vasily Khoruzhick <anars...@gmail.com>
---
arch/arm/include/asm/arch-sunxi/mmc.h | 6 +++++-
drivers/mmc/sunxi_mmc.c | 6 ++++++
2 files changed, 11 insertions(+), 1 deletion(-)
diff --git a/arch/arm/include/asm/arch-sunxi/mmc.h
b/arch/arm/include/asm/arch-sunxi/mmc.h
index 69f737f3bf..8575b393e5 100644
--- a/arch/arm/include/asm/arch-sunxi/mmc.h
+++ b/arch/arm/include/asm/arch-sunxi/mmc.h
@@ -47,7 +47,9 @@ struct sunxi_mmc {
u32 cbda; /* 0x94 */
u32 res2[26];
#ifdef CONFIG_SUNXI_GEN_SUN6I
- u32 res3[64];
+ u32 res3[17];
+ u32 samp_dl;
+ u32 res4[46];
#endif
u32 fifo; /* 0x100 / 0x200 FIFO access address */
};
@@ -131,5 +133,7 @@ struct sunxi_mmc {
#define SUNXI_MMC_COMMON_CLK_GATE (1 << 16)
#define SUNXI_MMC_COMMON_RESET (1 << 18)
+#define SUNXI_MMC_CAL_DL_SW_EN (0x1 << 7)
+
struct mmc *sunxi_mmc_init(int sdc_no);
#endif /* _SUNXI_MMC_H */
diff --git a/drivers/mmc/sunxi_mmc.c b/drivers/mmc/sunxi_mmc.c
index 06b0fd491c..9e7c42c571 100644
--- a/drivers/mmc/sunxi_mmc.c
+++ b/drivers/mmc/sunxi_mmc.c
@@ -227,6 +227,12 @@ static int mmc_config_clock(struct sunxi_mmc_priv *priv,
struct mmc *mmc)
rval &= ~SUNXI_MMC_CLK_DIVIDER_MASK;
writel(rval, &priv->reg->clkcr);
+#ifdef CONFIG_MACH_SUN50I
+ /* Run calibration on A64 */
+ if (priv->mmc_no == 2)
+ writel(SUNXI_MMC_CAL_DL_SW_EN, &priv->reg->samp_dl);
+#endif
+
/* Re-enable Clock */
rval |= SUNXI_MMC_CLK_ENABLE;
writel(rval, &priv->reg->clkcr);
--
2.17.0
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