mmc: disable UHS modes if Vcc cannot be switched on and off

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?

Thanks.

Quoted 18 lines · Eugeniy Paltsev

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-------------

Quoted 1 line

Any ideas how to fix this?

Could you share which git repository you use?

Best Regards,
Jaehoon Chung

Quoted 3 lines

Thanks.

Quoted 19 lines · Jaehoon Chung

Quoted 18 lines · Eugeniy Paltsev

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-------------

Quoted 3 lines

Quoted 1 line

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-------------

Quoted 8 lines

Best Regards,
Jaehoon Chung

Quoted 3 lines

Thanks.

Quoted 26 lines · Eugeniy Paltsev

Quoted 19 lines · Jaehoon Chung

Quoted 18 lines · Eugeniy Paltsev

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-------------

Quoted 3 lines

Quoted 1 line

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

Quoted 9 lines

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-------------

I guess that this issue has already been fixed.

http://patchwork.ozlabs.org/patch/862160/

Best Regards,
Jaehoon Chung

Quoted 8 lines

Quoted 8 lines

Best Regards,
Jaehoon Chung

Quoted 3 lines

Thanks.