Re: SD card timeout problems on Nokia N900 (omap_hsmmc on OMAP3)

[Tony Lindgren <tony@atomide.com>]

* Balaji T K <balajitk@ti.com> [140226 00:48]:
> On Wednesday 26 February 2014 12:25 PM, Stefan Roese wrote:
> >Hi Sebastian,
> >
> >On 26.02.2014 07:02, Michael Trimarchi wrote:
> >>Hi Sebastian
> >>
> >>On Wed, Feb 26, 2014 at 12:47 AM, Sebastian Reichel <sre@ring0.de> wrote:
> >>>Hi,
> >>>
> >>>I have problems with the SD-card initialization on my Nokia N900
> >>>using a 3.14-rc1 based kernel in DT boot mode. The bug is can be
> >>>circumvented by changing the kernel slightly (e.g. remove some DT
> >>>nodes or mark them as disabled). So the SD card's timeout problems
> >>>seem to derive from kernel timing problems. I'm pretty sure, that
> >>>the problems are not originating from a broken SD card, since
> 
> Can you provide removed/Disabled dt nodes, it might give some clue ?
> 
> >>>
> >>>  1. The SD card worked quite good before and still does depending
> >>>     on unrelated DTS changes (=> loading less drivers).
> >>>  2. The SD card works flawlessly on my notebook using a USB adapter
> >>>  3. Another SD card showed the same problem
> >>>
> >>>I tried to git bisect the problem, but I just get shown some
> >>>unrelated driver additions.
> >>>
> >>>Anyways, this is the error I get during boot:
> >>>
> >>>[    3.896820] mmc0: mmc_rescan_try_freq: trying to init card at 400000 Hz
> >>>...
> >>>[    5.956237] mmc0: error -110 whilst initialising SD card
> >>>
> >>
> >>Are you sure that some subsystem that you deactivate don't change
> >>pin muxing setting? Can you check in the broken system if the pins of the sdcard
> >>are correctly muxed? Does it happen even if you change the sdcard?
> >
> >Did you try to add this patch series:
> >
> >http://www.spinics.net/lists/linux-omap/msg103264.html
> >
> >Without it I'm also having problems with MMC detection on some OMAP3 based boards.
> >
> >Balaji, what is the status of this patch series? Are there any chances that it will be included in v3.14?
> >
> 
> Due to dependencies between regulator, mmc, omap def config, devicetree changes,
> I am hoping either Chris or Tony pick the whole series for 3.15

Best that Chris takes it all, I just acked the only patch that did not have
my ack yet.
 
> Couple of tested-by will surely help.

Yeah please ack in the thread above if you did not already.

Regards,

Tony