[1/2] RTC: Add core rtc support for Gemini Soc devices

[Roman Yeryomin]

On 2015-05-06 12:53, Alexandre Belloni wrote:
> On 06/05/2015 at 11:39:58 +0200, Arnd Bergmann wrote :
>> On Saturday 02 May 2015 01:42:14 Alexandre Belloni wrote:
>> > Hi,
>> >
>> > On 14/12/2010 at 16:08:26 +0100, Hans Ulli Kroll wrote :
>> > > driver for the rtc device
>> > > on Cortina Systems CS3516 or StormlinkSemi SL3516 aka Gemini SoC
>> > >
>> > > Signed-off-by: Hans Ulli Kroll <ulli.kroll at googlemail.com>
>> >
>> > This driver has never been merged and the platform doesn't seem to be
>> > active anymore. Is there still any interest in getting this driver
>> > mainlined?
>> >
>> > Only tree wide cleanups happened in mach-gemini since end of 2010, the
>> > listed git repository (git://git.berlios.de/gemini-board) was on berliOS
>> > (closed since 2011) and the sourceforge mirror seems empty. Is there
>> > still interest in keeping that platform in the mainline?
>> 
>> As far as I know, the platform is still used by a number of people,
>> and is supported by OpenWRT. The reason we haven't seen updates is 
>> that
>> Ulli has been mostly absent from upstream development, and we haven't
>> had any other person step up as maintainer.
>> 
>> I have a patch to convert the platform to ARCH_MULTIPLATFORM, and
>> the code doesn't really get in the way otherwise.
>> 
>> As far as I'm concerned, we should just merge all the patches from
>> http://git.openwrt.org/?p=openwrt.git;a=tree;f=target/linux/gemini/patches-3.18
>> 
>> We should also try to find a maintainer that can respond to patches
>> in a timely manner. If Ulli has time for that again, that would be 
>> great,
>> otherwise I think we should find someone from OpenWRT to take over.
>> 
> 
> Thanks to point that, I'll merge that one which seems clean enough:
> http://git.openwrt.org/?p=openwrt.git;a=blob;f=target/linux/gemini/files/drivers/rtc/rtc-gemini.c;h=587d8122b2fbb1230437eadcce4789a53aa60ee5;hb=4c637410a2a1ab45988e8ca6202554a502102039

For 3.18 (and up) to work on gemini 160-gemini-timers.patch is vital. 
Without that timers are broken and cpu is super slow.

Regards,
Roman