[PATCH 2/3] powerpc/esdhc: add property to disable the CMD23

Chris Ball cjb at laptop.org
Wed Sep 12 06:59:07 EST 2012


Hi,

On Tue, Sep 11 2012, Kumar Gala wrote:
> thanks for the info.  Do you know what's required on controller side
> to handle cards that support CMD23?
>
> I'm trying to figure out if older controller's on FSL SoCs are missing
> some feature to allow CMD23 to work (vs Auto-CMD23).

It seems plausible that it's just not implemented on these controllers.
It's a little strange, since the command's been specified for so long
and we haven't seen any other controllers with problems.  The patch
would be correct if this is true.

- Chris.
-- 
Chris Ball   <cjb at laptop.org>   <http://printf.net/>
One Laptop Per Child


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