Re: [PATCH] ARC: [plat-hsdk]: Increase SDIO CIU frequency to 50000000Hz

[Alexey Brodkin]

Hi Eugeniy,

On Wed, 2017-10-11 at 20:01 +0300, Eugeniy Paltsev wrote:
> With current SDIO CIU clock frequency (12500000Hz) DW MMC
> controller fails to initialize some SD cards (which don't
> support slow mode).
> 
> So increase SDIO CIU frequency from 12500000Hz to 50000000Hz by
> switching from the default divisor value (div-by-8) to the
> minimum possible value of the divisor (div-by-2) in HSDK platform
> code.
> 
> Reported-by: Vineet Gupta <vgupta@xxxxxxxxxxxx>
> Tested-by: Vineet Gupta <vgupta@xxxxxxxxxxxx>
> Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@xxxxxxxxxxxx>

Given this change doesn't introduce any regressions
or at least so far we only saw 1 card started to work
(confirmed by Vineet) while cards we tried locally continue to work...

Acked-by: Alexey Brodkin <abrodkin@xxxxxxxxxxxx>