Status of gpio-pxa driver and dummy clock

[Haojian Zhuang]

On Mon, Mar 5, 2012 at 2:26 AM, Paul Parsons <lost.distance at yahoo.com> wrote:
> --- On Sun, 4/3/12, Robert Jarzmik <robert.jarzmik at free.fr> wrote:
>> From: Robert Jarzmik <robert.jarzmik at free.fr>
>> Subject: Re: Status of gpio-pxa driver and dummy clock
>> To: "Haojian Zhuang" <haojian.zhuang at gmail.com>
>> Cc: "Arnd Bergmann" <arnd at arndb.de>, linux-arm-kernel at lists.infradead.org
>> Date: Sunday, 4 March, 2012, 10:25
>> Haojian Zhuang <haojian.zhuang at gmail.com>
>> writes:
>>
>> > On Sun, Mar 4, 2012 at 5:34 AM, Robert Jarzmik <robert.jarzmik at free.fr>
>> wrote:
>> >> Hi Haojian,
>> >>
>> >> As you certainly know, Russell reverted the patch
>> "ARM: pxa: add dummy clock for
>> >> sa1100-rtc", id
>> a55b5adaf403c4d032e0871ad4ee3367782f4db6. As a consequence,
>> the
>> >> dummy clock for gpio-pxa was removed, causing
>> breakage of gpio-pxa driver.
>> >>
>> >> I wonder if you (or somebody through you) sent an
>> update to fix the gpio-pxa by
>> >> either fixing gpio-pxa or adding back "pxa-gpio"
>> clock. As of today, I see no
>> >> fix in 3.3-rc free (Linus tree).
>> >>
>> >
>> > This patch is already merged into arm-soc tree for
>> v3.4. I don't have
>> > a plan to push it into
>> > v3.3.
>>
>> Oh, you should push it to 3.3. It's a fix, and the mioa701
>> board is broken (and
>> probably many others PXA based boards too) because no GPIO
>> is available (as
>> probe function of pxa-gpio always fail on clk_get()).
>>
>> If you don't want to push it to 3.3, I'll have to send a fix
>> to Arnd to fix the
>> breakage.
>>
>> Without it, a PXA based kernel (pxa2xx) will hang in its
>> boot phase, on the
>> first gpio_get_* or gpio_set_*, which is called by many
>> drivers.
>
> There are two further pxa gpio regressions still present in
> linux-3.3-rc5:
>
> mfp/gpio regression: pxa_last_gpio used before initialized
> http://lists.infradead.org/pipermail/linux-arm-kernel/2012-January/082624.html
>
> reboot/suspend regression: hx4700 freezes under linux-3.3-rc1
> http://lists.infradead.org/pipermail/linux-arm-kernel/2012-February/082873.html
> (2 regressions are reported here; the reboot regression is still present in
> linux-3.3-rc5 while the suspend regression has now been fixed).

I missed them. Maybe I was not in the Cc list. I'll append the patches
to fix them.

Best Regards
Haojian