Re: [PATCH] mmc: sdhci-esdhc-imx: increase the pad I/O drive strength for DDR50 card

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On Mon, Apr 17, 2017 at 07:10:02PM +0800, Haibo Chen wrote:
> Currently for DDR50 card, it need tuning in default. We meet tuning fail
> issue for DDR50 card and some data CRC error when DDR50 sd card works.
> 
> This is because the default pad I/O drive strength can't make sure DDR50
> card work stable. So increase the pad I/O drive strength for DDR50 card,
> and use pins_100mhz.
> 
> Tested-and-reported-by: Tim Harvey <tharvey@xxxxxxxxxxxxx>
> Signed-off-by: Haibo Chen <haibo.chen@xxxxxxx>
> Cc: stable@xxxxxxxxxxxxxxx # v4.4+

Acked-by: Dong Aisheng <aisheng.dong@xxxxxxx>

Regards
Dong Aisheng



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