Re: [PATCH v2 2/3] arm64: dts: meson-g12b-odroid-n2: Disable virtual RTC driver

[Christian Hewitt <christianshewitt@xxxxxxxxx>]

> On 18 Aug 2020, at 11:45 am, Jerome Brunet <jbrunet@xxxxxxxxxxxx> wrote:
> 
> 
> On Mon 17 Aug 2020 at 12:21, Anand Moon <linux.amoon@xxxxxxxxx> wrote:
> 
>> Disable virtual RTC node on Odroid N2,
>> since RTC PCF8563 support rtc wakeup.
>> 
>> [    7.171149] meson-vrtc ff8000a8.rtc: registered as rtc0
>> [    7.182875] meson-vrtc ff8000a8.rtc: setting system clock to 1970-01-01T00:00:07 UTC (7)
>> 
> 
> Maybe I'm missing something but why should disable this ?
> Can't the 2 RTCs co-exist ?

aliases {
	serial0 = &uart_AO;
	ethernet0 = &ethmac;
	rtc1 = &vrtc;
};

^ adding this alias moves vrtc to /dev/rtc1 allowing the on-board rtc to
assume /dev/rtc0 which scripts/users and HOWTO guides assume to be a
real clock device. Tested and working fine with my own experiments with
enabling rtc on a bunch of G12B/SM1 boards.

Christian