Am Mittwoch, 1. März 2017, 14:11:47 CET schrieb Guenter Roeck:
> HS400-ES devices fail to initialize with the following error messages.
>
> mmc1: power class selection to bus width 8 ddr 0 failed
> mmc1: error -110 whilst initialising MMC card
>
> This was seen on Samsung Chromebook Plus. Code analysis points to
> commit 3d4ef329757c ("mmc: core: fix multi-bit bus width without
> high-speed mode"), which attempts to set the bus width for all but
> HS200 devices unconditionally. However, for HS400-ES, the bus width
> is already selected.
>
> Cc: Anssi Hannula <anssi.hann...@bitwise.fi>
> Cc: Douglas Anderson <diand...@chromium.org>
> Cc: Brian Norris <briannor...@chromium.org>
> Fixes: 3d4ef329757c ("mmc: core: fix multi-bit bus width ...")
> Signed-off-by: Guenter Roeck <li...@roeck-us.net>
> Reviewed-by: Douglas Anderson <diand...@chromium.org>
> Reviewed-by: Shawn Lin <shawn....@rock-chip.com>
On a rk3399-kevin and the current mainline kernel from 20170309 it makes the
issue go away and the emmc work again, so
Tested-by: Heiko Stuebner <he...@sntech.de>
