- Regarding backporting RTC PCF85263 driver to cip 4.4 kernel
Re: Regarding backporting RTC PCF85263 driver to cip 4.4 kernel
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[mailto:cip-dev-bounces@...] On Behalf Of Pavel
Sent: Monday, July 15, 2019 6:46 AM
To: Biju Das <biju.das@...>
Cc: Christopher Feghali <christopher.feghali.xb@...>;
Subject: Re: [cip-dev] Regarding backporting RTC PCF85263 driver to cip
RTC PCF85263 is used by iWave RZ/G1C SBC( iwg23s) platform. We have
upstreamed this driver support on 4.19 kernel  .
This driver is based on RTC PCF 85363 driver which has rtc
nvmem/alarm support  . Rtc nvmem framework is introduced in 4.13
cbeef5293d5First, you did a lot of work there...
We are seeing the following options for backporting this driver to
Option 1:Ok, this is rather long/big series, and some parts are quite scary:
Backport this driver to 4.4 kernel along with nvmem/alarm support.
we have already done this work and patches are available at  .
Option 2:So we basically get this one, and few patches on top, local to the new
Backport RTC PCF85263 driver, removing Alarm/nvmem functionality from
I think I prefer option 2.
Option 3:Applying patch #15 is easy. We can do option 2 I believe.
Don't backport RTC support at all.
I think that option 2 is good.
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