[U-Boot] mmc: disable UHS modes if Vcc cannot be switched on and off

[Eugeniy Paltsev]

On Tue, 2018-01-23 at 10:44 +0900, Jaehoon Chung wrote:
> On 01/23/2018 03:38 AM, Eugeniy Paltsev wrote:
> > Hi Jean-Jacques,
> > 
> > after commit "mmc: disable UHS modes if Vcc cannot be switched on and off" (04a2ea248f)
> > we got MMC broken on several (at least two) platforms with DesignWare MMC controller.
> > 
> > The error log (with debug enabled in drivers/mmc/mmc.c and drivers/mmc/dw_mmc.c) is next:
> > --------------->8-------------
> > MMC:   Synopsys Mobile storage: 0
> > Buswidth = 0, clock: 400000
> > selecting mode MMC legacy (freq : 0 MHz)
> > Buswidth = 1, clock: 400000
> > Buswidth = 1, clock: 400000
> > Sending CMD0
> > dwmci_send_cmd: Timeout.
> > mmc_init: -110, time 19
> > ** Bad device mmc 0 **
> > --------------->8-------------
> > 
> > Any ideas how to fix this?
> 
> Could you share which git repository you use? 

I use u-boot master branch from git://git.denx.de/u-boot.git

last commits:
--------------->8-------------
485c13c Merge git://git.denx.de/u-boot-dm
b79221a lib: fdtdec: Fix some style violations
2e38662 lib: fdtdec: Fix whitespace style violations
29d11b8 core: Make device_is_compatible live-tree compatible
147c607 core: Add {ofnode, dev}_translate_address functions
--------------->8-------------

> Best Regards,
> Jaehoon Chung
> 
> > 
> > Thanks.
> > 
> 
> 
-- 
 Eugeniy Paltsev