Re: [RFC/PATCH 0/2] mmc: sdhci: Workaround Intel Merrifield issuefor HS200

[David Cohen]

On 10/29/2013 10:58 AM, David Cohen wrote:
> Hi,
>
> SDHCI used to work well on Intel Merrifield until this patch was applied:
>
> commit 156e14b126ffb6f040bc6f1aff3c51077e42a744
> Author: Giuseppe CAVALLARO <peppe.cavallaro@xxxxxx>
> Date:   Wed Jun 12 08:16:38 2013 +0200
>
>      mmc: sdhci: fix caps2 for HS200
>
>      Although the HC supports HS200 (eMMC) the caps2 are always zero; this
>      means there's no way to use the super speed mode (when init the card).
>
>      If the HC support SDR104, for SD3.0, so it also supports HS200 for eMMC
>      and this patch just sets the MMC_CAP2_HS200 in the host caps2 field.
>
> Looks like there is a hw issue with unknown root cause so far.
>
> Is it acceptable to have the quirk I'm proposing to workaround the issue?

Ping. Any comments here?

Br, David Cohen
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