Re: DS3231 RTC module not detected

On 21/2/22 10:46 pm, Archimedes Gaviola wrote:
>
>
> On Mon, Feb 21, 2022 at 7:29 PM Daniel O'Connor <darius@dons.net.au> 
> wrote:
>
>
>
>     > On 21 Feb 2022, at 21:50, Archimedes Gaviola
>     <archimedes.gaviola@gmail.com> wrote:
>     > Did you re-compile your kernel? Brian has shared his resolution
>     on customizing the GENERIC kernel here
>
>     No I didn't realise it was necessary :)
>
>
> Yes it is :-)
>
>
>     >
>     https://lists.freebsd.org/archives/freebsd-arm/2022-February/001024.html
>     which allows to free-up the i2c address 0x68 which by default is
>     being used by the MAX77620 RTC driver from the
>     SOC_NVIDIA_TEGRA210. So, you need to add these lines in your
>     kernel (I assume it's still the GENERIC otherwise use your
>     existing config),
>     >
>     > include         GENERIC
>     > ident             GENERIC-PI
>     > nooptions     SOC_NVIDIA_TEGRA210
>     >
>     > and then recompile. Keep your /boot/msdos/config.txt and
>     /boot/msdos/overlays/ds1307.dtbo files intact. After recompiling
>     and rebooting, you can check the dmesg if the ds1307 driver is
>     loaded, otherwise invoke "kldload ds1307" and see if it's
>     detected. Add a line into your /boot/loader.conf with
>     ds1307_enable="YES" if necessary. Lastly, kindly backup your data
>     before recompiling for safety.
>     >
>     > This is the way I do it with my ds3231 driver, hope you will get
>     the same result.
>
>     Thanks.
>
>
>
> You're welcome.
>
>
>     I chatted to some people on IRC and I think it's fixed in a later
>     version anyway with these commits:
>     https://cgit.freebsd.org/src/commit/?id=1bd3e8ba696633ccd7525030d951b58ade167814
>     https://cgit.freebsd.org/src/commit/?id=a534b50e245d801af887d91b5d48ebcf120aa039
>
>
> Wow, this is good news...
>
>     Although I have not been brave enough to update to HEAD and try it
>     yet :)
>
>
> Yeah, better to wait than meet a lot of surprises with HEAD :-)

Thanks for the fix. I hope to try it soon.

Brian