Thursday, October 19, 2023

[fedora-arm] Re: RPi4 and support for RTC DS3231

On Thu, Oct 19, 2023 at 4:22 PM Barry Scott <> wrote:
> I have an RPi4 running Fedora 38 with kernel 6.5.6-200.fc38.aarch64.
> So far I figured out that I have to add this line to the config.txt
> [pi4]
> dtoverlay=i2c-rtc,ds3231
> But after a reboot I am not seeing any /dev/rtc* devices.
> Also I'm not seeing any rtc drivers load in lsmod output.
> Should this work with the Fedora kernel?
> If so what do I need to do to make the RTC show up?

You'll need to follow the general section for HAT support (it's
basically any HW that needs an overlay) and reboot and it should work:

That RTC is supported by the rtc-ds1307 driver.

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