Hi Wolfram-san,
> From: Wolfram Sang, Sent: Thursday, November 26, 2020 5:50 AM
>
> Further testing of error cases revealed that downgrade is not enough, so
> we need to reset the SCC which is done by calling the custom reset
> function. This reset function can distinguish between the various SDHI
> variants, so protecting the call with MIN_RCAR2 is enough here.
>
> Fixes: 24ce2d7b8bea ("mmc: tmio: bring tuning HW to a sane state with MMC_POWER_OFF")
> Reported-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
> Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
Thank you for the patch! I tested on Salvator-XS with R-Car H3
and confirmed that this patch could fix an issue which the SCC hang
issue happened when the mmc_hw_reset() was called. So,
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
Best regards,
Yoshihiro Shimoda
