From: Patrick Delaunay <patrick.delau...@st.com>
The hardware flow control functionality is used to avoid
FIFO underrun (TX mode) and overrun (RX mode) errors.
The behavior is to stop SDMMC_CK during data transfer and
freeze the SDMMC state machines.
Signed-off-by: Patrick Delaunay <patrick.delau...@st.com>
Signed-off-by: Patrice Chotard <patrice.chot...@st.com>
---
drivers/mmc/stm32_sdmmc2.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/stm32_sdmmc2.c b/drivers/mmc/stm32_sdmmc2.c
index f3b77f512e85..0fe6808e5dc8 100644
--- a/drivers/mmc/stm32_sdmmc2.c
+++ b/drivers/mmc/stm32_sdmmc2.c
@@ -495,7 +495,8 @@ static int stm32_sdmmc2_set_ios(struct udevice *dev)
if (mmc->bus_width == 8)
clk |= SDMMC_CLKCR_WIDBUS_8;
- writel(clk | priv->clk_reg_msk, priv->base + SDMMC_CLKCR);
+ writel(clk | priv->clk_reg_msk | SDMMC_CLKCR_HWFC_EN,
+ priv->base + SDMMC_CLKCR);
return 0;
}
--
1.9.1
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
https://lists.denx.de/listinfo/u-boot
