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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=5480148B.6050502@samsung.com \
--to=jh80.chung@samsung.com \
--cc=u-boot@lists.denx.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.