Re: [PATCH] ARM64: dts: meson: reduce odroid-c2 eMMC maximum rate

From: Kevin Hilman
Date: Wed Mar 07 2018 - 20:24:52 EST


Jerome Brunet <jbrunet@xxxxxxxxxxxx> writes:

> Different modules maybe installed by the user on the eMMC connector
> of the odroid-c2. While the red modules are working without an issue,
> it seems some black modules (apparently Samsung based) are having
> issue at 200MHz
>
> While the tuning algorithm introduced in v4.14 enables high speed modes
> on every other tested designs, it seems a problem remains for this
> particular combination of board and eMMC module.
>
> Lowering the maximum frequency of the eMMC on this board until we can
> figure out a better solution.
>
> Fixes: d341ca88eead ("mmc: meson-gx: rework tuning function")
> Suggested-by: Ellie Reeves <ellierevves@xxxxxxxxx>
> Signed-off-by: Jerome Brunet <jbrunet@xxxxxxxxxxxx>

Applied to v4.17/dt64 and Cc'd to stable,

Kevin