Re: [PATCH] Disable HS-DDR mode for Olimex A64-OLinuXino variants with eMMC

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Hi,

On Thu, Oct 22, 2020 at 12:10:45AM +0200, Philip Rinn wrote:
> Hi,

The commit log is going to end up in the git history, so the hi should
be dropped :)

> the Olimex A64-OLinuXino board comes in various variants, three with eMMC.
> While MMC HS-DDR mode works fine on one of them (A64-OLinuXino-1Ge4GW) it
> doesn't work on the A64-OLinuXino-2Ge8G-IND variant (I don't have the
> third variant so I can't check if it works there).

Why is it not working? That flag is just setting what the controller is
capable of, if the eMMC wasn't supporting that mode it wouldn't even
try.

> Disabling MMC HS-DDR mode fixes the problem. This is also what Olimex does
> for their kernel:
> 
> https://github.com/OLIMEX/linux-olimex/commit/eef0e814e74f.patch

Again, there's no context there

Maxime

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