Re: DA850-EVM (L-138) Booting from SD Broken on 4.10-RC1 and newer

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On Thursday 23 February 2017 07:02 PM, Adam Ford wrote:
> I narrowed down the patch to this merge.
> 
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e79ab194d15e1baa25540cb9efaf2a459cf4bc32
> 
> 
> Using the same boot parameters, I can boot the 4.9.y branch, so I
> don't think it's my SD card or my boot parameters.

Hmm, I just tried booting my DA850 EVM with root filesystem on SD card, 
and it booted fine.

http://pastebin.ubuntu.com/24077092/

> I need to go checkout this branch and bisect it to identify what
> causes a failure to boot over SD card.  If anyone has already started
> this, can you let me know,  I don't want to double efforts.
> 
> Here is the log:
> 
> [stuff deleted]

Are you using DT boot or non-DT ? Also, what is the config you are 
using to build the kernel - davinci_all_defconfig?

> VDCDC1: incomplete constraints, leaving on
> mmc0: new high speed SDHC card at address b368
> mmcblk0: mmc0:b368 00000 3.75 GiB (ro)
>  mmcblk0: p1 p2
> VDCDC3: incomplete constraints, leaving on
> LDO1: incomplete constraints, leaving on
> LDO2: incomplete constraints, leaving on
> VFS: Cannot open root device "mmcblk0p2" or unknown-block(179,2): error -30

-30 is "Read only filesystem". Could it be that you have "rw" in you 
bootargs and have the read-only switch of SD card set to locked?

Thanks,
Sekhar

PS: DA850/OMAP-L138 EVM is not supported on linux-omap mailing list. 
linux-omap community hacks on boards supported through arch/arm
/mach-omap2 and arch/arm/mach-omap1. I know "OMAP" in the part number 
creates this confusion.

For bug reports on DA850 EVM, please copy the folks and lists listed in 
MAINTAINERS entry:

TI DAVINCI MACHINE SUPPORT
M:	Sekhar Nori <nsekhar@xxxxxx>
M:	Kevin Hilman <khilman@xxxxxxxxxx>
L:	linux-arm-kernel@xxxxxxxxxxxxxxxxxxx (moderated for non-subscribers)
T:	git git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci.git
S:	Supported
F:	arch/arm/mach-davinci/
F:	drivers/i2c/busses/i2c-davinci.c

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