OMAP5912 boot broken by "gpio/omap: don't create an IRQ mapping for every GPIO on DT"

[Santosh Shilimkar]

On Monday 29 July 2013 10:52 AM, Alexander Holler wrote:
> Am 29.07.2013 14:57, schrieb Santosh Shilimkar:
> 
>> With some helps from MMC and other guys, we validated the Linus's tip which includes
>> your patches. It actually doesn't break anything and as OMAP hsmmc maintainer
>> clarified, the cd-gpios isn't supported yet for DT. While supporting that it
>> can use appropriate binding whichever works.
>>
>> But with OMAP1 breakage reported by Paul, I think we are not left with choice
>> but to revert those commits. We *must* respect rc rules for the fixes.
>> *No regression*
>>
>> Thanks for your hardwork to cook up those patches but now Linus's W proposal
>> is going to be generic, hopefully the issue can be address better. Till
>> then we can't get the ethernet support.
> 
> The problem never was just the omap_hsmmc driver. I rather would say all drivers which do use GPIOs as IRQs were affected.
> 
> I've only used the omap_hsmmc driver as example, because that was the driver I've tried to actually use with sd-cards, which is rather impossible without having a working CD-signal. And all code was already there and seems to work (at least during my few tests), so I've just added an entry to the dts to be able to use a mmc-slot as one would expect a mmc-slot does work.
> 
> If someone wants to test a new feature at the same front, I would suggest to try it out using gpio-keys. That driver should work on almost any architecture/platform/hardware which supports gpios and is small enough to be a good test candidate. Having had a short look at gpio-keys.c, I think the same problems as with omap_hsmmc would have been occured when someone had tried to use that driver with 3.11-rc2.
> 
The 3 OMAP platforms which supports DT are AM33XX, OMAP4 and OMAP5.
OMAP3 based boards are getting converted but they are bit far from being
DT only. So my statement was again from what we support on mainline today
and those platform don't use gpio-keys. But for testing perspective,
I guess its good idea.

As mentioned above, we are going ahead with revert and possible better
alternative to the root of the problem.

Regards,
Santosh
P.S: Please sensibly wrap your email replies to 80 chars so that
people can read it without scrolling to the end of the line.

Regards,
Santosh