From mboxrd@z Thu Jan 1 00:00:00 1970 From: holler@ahsoftware.de (Alexander Holler) Date: Mon, 29 Jul 2013 17:18:11 +0200 Subject: OMAP5912 boot broken by "gpio/omap: don't create an IRQ mapping for every GPIO on DT" In-Reply-To: <51F684F2.5050308@ti.com> References: <51F633AE.8090308@collabora.co.uk> <51F63864.9000601@collabora.co.uk> <51F666B7.7020209@ti.com> <51F681C4.3000400@ahsoftware.de> <51F684F2.5050308@ti.com> Message-ID: <51F687B3.7030902@ahsoftware.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Am 29.07.2013 17:06, schrieb 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. > I wonder how you do know that no board with OMAP chips does use gpio-keys? Does TI restrict their users/customers to only certified drivers? ;) > 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. Line-wrapping mail readers do exist since some decades and I believe people should be able to read e-mails with whatever line width they prefer (and NOT what I prefer). So I never will hard-limit mails to some specific line width on my side (besides from patch). That's just a very bad behaviour. Regards, Alexander Holler