在 2020/11/12 18:04, Jiaxun Yang 写道:
Hi Tiezhu,
在 2020/11/12 16:29, Tiezhu Yang 写道:
Add read_persistent_clock64() to read the time from the battery backed
persistent clock. With this patch, we can fix the wrong time issue due
to the system clock is not consistent with hardware clock after resume
from sleep state S3 (suspend to RAM), at the same time, the system time
can be right instead of "Thu Jan 1 08:00:00 CST 1970" without rtc
driver.
start_kernel()
timekeeping_init()
read_persistent_wall_and_boot_offset()
read_persistent_clock64()
timekeeping_resume()
read_persistent_clock64()
timekeeping_suspend()
read_persistent_clock64()
It is highly discoraged to do anything with bridgetype, which isn't
probed via
devicetree.
Please check if you can deal with that inside RTC framework, or make
it as
a part of RTC driver (e.g. set up a callback).
Also you should submit RTC driver at first if you intend to complete
LS7A support.
Oops,
Just dig it deeper, I guess simply select RTC_HCTOSYS would solve the issue.
We're trying very hard to decouple all the drivers and conponents,
DeviceTree for all!
Thanks.
- Jiaxun
Signed-off-by: Yinglu Yang <yangyinglu@xxxxxxxxxxx>
Signed-off-by: Tiezhu Yang <yangtiezhu@xxxxxxxxxxx>
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