Re: [PATCH 7/7] arm64: dts: qcom: sm8350-hdk: describe WiFi/BT chip

[Konrad Dybcio]

On 6/1/26 11:46 AM, Dmitry Baryshkov wrote:
> The SM8350 HDK has onboard WiFi/BT chip, WCN6851. It is an earlier
> version of well-known WCN6855 WiFI/BT SoC. Describe the PMU, BT and WiFI
> parts of the device.

[...]

> +	wcn6855-pmu {
> +		compatible = "qcom,wcn6851-pmu", "qcom,wcn6855-pmu";
> +
> +		pinctrl-0 = <&bt_en>, <&wlan_en>, <&swctrl>;
> +		pinctrl-names = "default";
> +
> +		wlan-enable-gpios = <&tlmm 64 GPIO_ACTIVE_HIGH>;
> +		bt-enable-gpios = <&tlmm 65 GPIO_ACTIVE_HIGH>;
> +		swctrl-gpios = <&tlmm 153 GPIO_ACTIVE_HIGH>;
> +
> +		vddio-supply = <&vreg_s10b_1p8>;
> +		vddaon-supply = <&vreg_s11b_0p95>;
> +		vddpmu-supply = <&vreg_s11b_0p95>;
> +		vddpmumx-supply = <&vreg_s2e_0p85>;
> +		vddpmucx-supply = <&vreg_s11b_0p95>;
> +		vddrfa0p95-supply = <&vreg_s11b_0p95>;
> +		vddrfa1p3-supply = <&vreg_s12b_1p25>;
> +		vddrfa1p9-supply = <&vreg_s1c_1p86>;
> +		vddpcie1p3-supply = <&vreg_s12b_1p25>;
> +		vddpcie1p9-supply = <&vreg_s1c_1p86>;

[...]

> @@ -373,6 +437,13 @@ vreg_l7e_2p8: ldo7 {
>  			regulator-name = "vreg_l7e_2p8";
>  			regulator-min-microvolt = <2800000>;
>  			regulator-max-microvolt = <2800000>;
> +
> +			/*
> +			 * This is used by the RF front-end for which there is
> +			 * no way to represent it in DT (yet?).
> +			 */
> +			regulator-boot-on;
> +			regulator-always-on;

msm-5.4 maps this to bt-vdd-asd-supply (asd being a keyboard smash,
perhaps?) - what is its actual use?

Konrad