From: grygorii.strashko@ti•com (Grygorii Strashko)
To: linux-arm-kernel@lists•infradead.org
Subject: All OMAP platforms: MMC is broken
Date: Thu, 24 Sep 2015 15:51:35 -0700 [thread overview]
Message-ID: <56047E77.5030301@ti.com> (raw)
In-Reply-To: <20150924090048.GA21626@n2100.arm.linux.org.uk>
Hi Russell,
+Cc: Lokesh
On 09/24/2015 02:00 AM, Russell King - ARM Linux wrote:
> Nightly testing has revealed that both the OMAP3430 LDP and the OMAP4430
> SDP fail to boot due to lack of working MMC. Both platforms fail to
> find their rootfs, which is on a SD card.
>
> The breakage occurred somewhere between trees of September 9th (commit
> 4e4adb2f4628) and September 12th (commit b0a1ea51bda4), so during the
> merge window.
>
> Diffing those two trees show no changes to OMAP platform code, but
> substantial changes in the MMC code:
>
[...]
>
> So this probably results from the MMC update during the merge window:
>
> 85579ad7f1df Merge tag 'mmc-v4.3' of git://git.linaro.org/people/ulf.hansson/mmc
>
> The OMAP4430 reports this during it's boot log:
>
> mmc0: new high speed MMC card at address 0001
> mmcblk0: mmc0:0001 SEM08G 7.39 GiB
> mmcblk0boot0: mmc0:0001 SEM08G partition 1 1.00 MiB
> mmcblk0boot1: mmc0:0001 SEM08G partition 2 1.00 MiB
> ...
> VFS: Cannot open root device "mmcblk0p2" or unknown-block(179,2): error -6
> b300 7757824 mmcblk0 driver: mmcblk
> b310 1024 mmcblk0boot1 (driver?)
> b308 1024 mmcblk0boot0 (driver?)
> Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(179,2)
>
> whereas previous kernels reported:
>
> mmc0: host does not support reading read-only switch, assuming write-enable
> mmc0: new high speed SD card at address 0002
> mmcblk0: mmc0:0002 00000 971 MiB
> mmcblk0: p1 p2
> Waiting 2 sec before mounting root device...
> mmc1: new high speed MMC card at address 0001
> mmcblk1: mmc1:0001 SEM08G 7.39 GiB
> mmcblk1boot0: mmc1:0001 SEM08G partition 1 1.00 MiB
> mmcblk1boot1: mmc1:0001 SEM08G partition 2 1.00 MiB
> ...
> VFS: Mounted root (ext3 filesystem) on device 179:2.
>
> OMAP3430 only reports:
>
> VFS: Cannot open root device "mmcblk0p2" or unknown-block(0,0): error -6
>
> where previous kernels reported:
>
> mmc0: host does not support reading read-only switch, assuming write-enable
> mmc0: new high speed SD card at address 0002
> mmcblk0: mmc0:0002 00000 971 MiB
> mmcblk0: p1 p2
> ...
> VFS: Mounted root (ext2 filesystem) on device 179:2.
>
It looks like mmcX enumeration problem, which is not new, I think :(
Most probably with the last DT+code changes probing of MMC which handles SD
is deferred and as result it will get different ID.
I think Lokesh can comment more on this as he fixed it by switching uboot to
UUIDs instead of partition names.
http://git.ti.com/ti-u-boot/ti-u-boot/commit/5e31eb59f03a424371c605448b6bbc2f93da787b
--
regards,
-grygorii
next prev parent reply other threads:[~2015-09-24 22:51 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-24 9:00 All OMAP platforms: MMC is broken Russell King - ARM Linux
2015-09-24 22:51 ` Grygorii Strashko [this message]
2015-09-24 22:53 ` Russell King - ARM Linux
2015-09-24 23:37 ` Tony Lindgren
2015-09-25 1:13 ` Tony Lindgren
2015-09-26 2:54 ` Nishanth Menon
2015-10-01 9:33 ` Russell King - ARM Linux
2015-10-01 9:50 ` Ulf Hansson
2015-10-01 10:03 ` Russell King - ARM Linux
2015-10-05 11:23 ` Tony Lindgren
2015-10-05 14:35 ` Tony Lindgren
2015-10-05 14:51 ` Tony Lindgren
2015-10-05 17:11 ` Tony Lindgren
2015-10-05 18:38 ` Russell King - ARM Linux
2015-10-06 9:00 ` Russell King - ARM Linux
2015-10-06 9:44 ` Tony Lindgren
2015-10-06 10:11 ` Ulf Hansson
2015-10-06 10:36 ` Kishon Vijay Abraham I
2015-10-06 15:07 ` Russell King - ARM Linux
2015-10-06 19:29 ` Kishon Vijay Abraham I
2015-10-06 19:57 ` Russell King - ARM Linux
2015-10-08 0:46 ` Kishon Vijay Abraham I
2015-10-06 15:00 ` Russell King - ARM Linux
2015-10-06 15:37 ` Tony Lindgren
2015-10-07 12:45 ` Russell King - ARM Linux
2015-10-07 13:26 ` Tony Lindgren
2015-10-07 13:41 ` Ulf Hansson
2015-10-07 15:52 ` Tony Lindgren
2015-10-07 19:40 ` Ulf Hansson
2015-10-07 23:13 ` Kishon Vijay Abraham I
2015-10-08 8:40 ` Tony Lindgren
2015-10-08 9:35 ` Russell King - ARM Linux
2015-10-08 9:56 ` Tony Lindgren
2015-10-08 10:00 ` Russell King - ARM Linux
2015-10-07 17:53 ` Russell King - ARM Linux
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=56047E77.5030301@ti.com \
--to=grygorii.strashko@ti$(echo .)com \
--cc=linux-arm-kernel@lists$(echo .)infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox