From: Jaehoon Chung <jh80.chung@samsung.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] exynos: snow: external SD/MMC broken
Date: Thu, 04 Dec 2014 17:00:11 +0900 [thread overview]
Message-ID: <5480148B.6050502@samsung.com> (raw)
In-Reply-To: <547FA83A.9040104@samsung.com>
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
>>
>>
>
>
next prev parent reply other threads:[~2014-12-04 8:00 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-03 15:23 [U-Boot] exynos: snow: external SD/MMC broken Guillaume Gardet
2014-12-04 0:18 ` Minkyu Kang
2014-12-04 8:00 ` Jaehoon Chung [this message]
2014-12-04 9:11 ` Guillaume Gardet
2014-12-04 18:11 ` Suriyan Ramasami
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