share sa1100 rtc driver to arch-mmp
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Cover letter [PATCH 0/7] share sa1100 rtc driver to arch-mmp
Quoted 7 lines · Haojian Zhuang
I can remove the rtc-pxa support entirely. I still want to leave this since this may be the only one choice in the future silicons.
Since some boards with pxa27x/pxa3xx are accessing RCNR (the old rtc wrapper) directly, I use rtc-sa1100 to keep consistently. In pxa95x, nobody is using the old rtc wrapper directly. So I only use it in pxa95x.
No, I don't agree there.
The PXA RTC silicon support 2 different set of registers to access time :
- RCNR (rtc-sa1100)
- RYCR/RDCR (rtc-pxa)
The rtc-pxa driver was created to provide support for boards using the RYCR/RDCR rather than RCNR.
Therefore I'm against removing rtc-pxa, unless there is a driver for pxa, which provides RTC using RYCR/RDCR registers.
We had that discussion a long time ago, in [1].
Cheers.
--
Robert
[1] Linux Arm Kernel Mailing List, 2008/09/30
http://lists.arm.linux.org.uk/lurker/message/20080930.193554.96feb95f.en.html