Re: [U-Boot] [U-Boot, v2] mmc: sdhci: Fix the SD clock stop sequence

Dear Wenyou Yang,

Wenyou Yang wenyou.yang@atmel.com writes:

According to the SDHC specification, stopping the SD Clock is by setting the SD Clock Enable bit in the Clock Control register at 0, instead of setting all bits at 0.

Before stopping the SD clock, we need to make sure all SD transactions to complete, so add checking the CMD and DAT bits in the Presen State register, before stopping the SD clock.

Signed-off-by: Wenyou Yang wenyou.yang@atmel.com

Changes in v2:

• Add timeout to wait for the cmd & data inhibit bit

drivers/mmc/sdhci.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-)

applied to u-boot-atmel/master, thanks!

Best regards, Andreas Bießmann