[PATCH] ARM: config: Switch PXA27x platforms to use PXA RTC driver

Rob Herring [off-list ref] writes:

On Fri, Jul 24, 2015 at 12:02 PM, Rob Herring [off-list ref] wrote:

quoted

With the SA1100 and PXA RTC drivers be mutually exclusive and no
longer sharing hardware, PXA27x/PXA3xx platforms must use the PXA RTC
driver as the SA1100 platform device is no longer registered.

This change should be almost transparent to userspace. Former users of
pxa-rtc should be aware that 2 RTCs will be available on their kernels,
rtc0 being sa1100-rtc and rtc1 being pxa-rtc. Any userspace relying on
the fact that rtc0 was pxa-rtc should be fixed.

As a consequence:
 - the first reboot after the switch will have the wrong time,
 - on dual boot platform where the other OS programs some logic into the
   sa1100 rtc IP, a lack of fix in userspace, ie. a kernel changing
   sa1100-rtc thinking it is pxa-rtc could have dire consequence, such
   as wiping the other OS data partition.

(Thanks to Robert Jarmik for help on the above commit text.)

Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Cc: Daniel Mack <daniel@zonque.org>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Sergey Lapin <redacted>
Cc: Russell King <redacted>
Cc: Mike Rapoport <redacted>
Cc: Philipp Zabel <redacted>
---
PXA Maintainers,

This is dependent on my SA1100 RTC cleanup series[1]. Please comment on
this patch and that series. The full series is available from a git
branch here[2]. I've rebased it to 4.2-rc3, but otherwise there is no
change from v4.

Any comments on this? If not, I plan to send Alexandre a pull request
for this series this week.

Hi Rob,

I think you waited long enough, nobody can tell now they were not aware of the
situation. Please go ahead and request pull.

Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>

Cheers.

--
Robert