Re: [PATCH v3 7/8] arm64: dts: qcom: sdm845-db845c: describe WiFi/BT properly

Dmitry Baryshkov
2026-03-26T01:59:13Z

On Thu, 26 Mar 2026 at 02:02, David Heidelberg <david@ixit.cz> wrote:
>
> On 19/01/2026 18:08, Dmitry Baryshkov wrote:
>
> [...]
>
> > + wcn3990-pmu {
> > + compatible = "qcom,wcn3990-pmu";
> > +
> > + pinctrl-0 = <&sw_ctrl_default>;
> > + pinctrl-names = "default";
> > +
> > + vddio-supply = <&vreg_s4a_1p8>;
> > + vddxo-supply = <&vreg_l7a_1p8>;
> > + vddrf-supply = <&vreg_l17a_1p3>;
> > + vddch0-supply = <&vreg_l25a_3p3>;
> > + vddch1-supply = <&vreg_l23a_3p3>;
> > +
> > + swctrl-gpios = <&pm8998_gpios 3 GPIO_ACTIVE_HIGH>;
>
> Do you know if the GPIO is common for whole sdm845, or it's only recommended as
> reference design, or nothing?
>
> I did test defaulting to GPIO 3 on Pixel 3 and WiFi works as before, but since
> previous downstream kernel didn't touched GPIO 3 at all, I'm worried about
> toggling unrelated GPIO.

It is an input-only GPIO, but nevertheless, if you are not sure, just skip it.

--
With best wishes
Dmitry