On Mon, 11 Sep 2023 21:35:19 +0800 Chen-Yu Tsai <wens@xxxxxxxx> wrote: Hi Chen-Yu, [...] > > Regarding multiple RTCs: I didn't find anything which assigns a > > priority level to multiple RTCs in the system. What you can do on the > > userland side is to have a udev rule that links the PCF device to > > /dev/rtc, so that most tools would use that as a time source. > > You can add DT aliases to override the numbering, thus making an external > one rtc0 and the internal one rtc1. See > arch/arm/boot/dts/allwinner/sun6i-a31-hummingbird.dts for such an example. Ah, excellent, I somehow missed this. That should indeed solve that problem. Thanks for the heads up! Andre
