Re: [PATCH v2 09/11] arm64: dts: qcom: x1e80100-lenovo-yoga-slim7x: Add l7b_2p8 voltage regulator for RGB camera

[Bryan O'Donoghue]

On 21/03/2026 11:10, Tobias Heider wrote:
> I included this in my Ubuntu test kernel builds and got reports about
> reboot loops
> on the Lenovo Yoga Slim 7x.
>
> Your change seems to be based on
> https://github.com/alexVinarskis/linux/commit/ 
> a94d1f4e1d025398060d7e0dc2270b8e375f6f60
> which I had previously tested too and didn't see any issues with.
> The only difference is that your version uses different
> regulator-min-microvolt and
> regulator-max-microvolt values (3072000 vs 2800000).
>
> Setting them to 2800000 like in Aleksandrs patch seems to fix the boot issue.
>
> > +                       regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
> > +               };
> > +

Thank you for investigating this on real hardware.

I choose to stick to the regulator values apparent on the adjacent - but 
apparently 2.8 is the right value.

Debug appreciated.

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