[U-Boot] exynos: snow: external SD/MMC broken

[Jaehoon Chung]

Hi, GUillaume

On 12/04/2014 09:18 AM, Minkyu Kang wrote:
> + Jaehoon Chung
> 
> On 04/12/14 00:23, Guillaume Gardet wrote:
>> Hi,
>>
>> while trying latest u-boot GIT on snow (Google Chromebook ARM), I encountered some problems with external SD card.
>> I cannot access to external SD card ('mmc dev 1' just returns 'Card did not respond to voltage select!' and then 'Timeout') whereas I have access to internal eMMC (with 'mmc dev 0').

Did you check SD-card's power and clock line? "Timeout" is not important.

>>
>> Any idea what could be the problem?

You can enable CONFIG_MMC_TRACE, and you can also print debug message into dw-mmc.c
Could you share it?

Best Regards,
Jaehoon Chung
>>
>> On arndale board (same SoC), there is no such SD/MMC problem.
>>
>>
>> Guillaume
>>
>>
> 
>