Re: [PATCH v6 3/3] arm64: dts: qcom: sc8280xp-blackrock: dt definition for WDK2023

From: Konrad Dybcio
Date: Thu Oct 31 2024 - 16:15:51 EST


On 30.10.2024 12:02 PM, Jens Glathe via B4 Relay wrote:
> From: Jens Glathe <jens.glathe@xxxxxxxxxxxxxxxxxxxxxx>
>
> Device tree for the Microsoft Windows Dev Kit 2023. This work
> is based on the initial work of Merck Hung <merckhung@xxxxxxxxx>.
>
> Original work: https://github.com/merckhung/linux_ms_dev_kit/blob/ms-dev-kit-2023-v6.3.0/arch/arm64/boot/dts/qcom/sc8280xp-microsoft-dev-kit-2023.dts
>
> The Windows Dev Kit 2023 is a nice little desktop based on sc8280xp.
> Link: https://learn.microsoft.com/en-us/windows/arm/dev-kit/
>
> Supported features:
> - USB type-c and type-a ports
> - minidp connector
> - built-in r8152 Ethernet adapter
> - PCIe devices
> - nvme
> - ath11k WiFi (WCN6855)
> - WCN6855 Bluetooth
> - A690 GPU
> - ADSP and CDSP
> - GPIO keys
> - Audio definition (works via USB)
>
> Signed-off-by: Jens Glathe <jens.glathe@xxxxxxxxxxxxxxxxxxxxxx>
> ---

[...]

> + wcn6855-pmu {
> + compatible = "qcom,wcn6855-pmu";
> +
> + pinctrl-0 = <&bt_default>, <&wlan_en>;
> + pinctrl-names = "default";
> +
> + wlan-enable-gpios = <&tlmm 134 GPIO_ACTIVE_HIGH>;
> + bt-enable-gpios = <&tlmm 133 GPIO_ACTIVE_HIGH>;
> +
> + vddio-supply = <&vreg_s10b>;
> + vddaon-supply = <&vreg_s12b>;
> + vddpmu-supply = <&vreg_s12b>;
> + vddrfa0p95-supply = <&vreg_s12b>;
> + vddrfa1p3-supply = <&vreg_s11b>;
> + vddrfa1p9-supply = <&vreg_s1c>;
> + vddpcie1p3-supply = <&vreg_s11b>;
> + vddpcie1p9-supply = <&vreg_s1c>;

Please update this atop

<20241018-sc8280xp-pwrseq-v6-0-8da8310d9564@xxxxxxxxxx>

most notably including a new supply (which will likely be identical)

> + compatible = "qcom,sc8280xp-sndcard";
> + model = "microsoft/blackrock";
> + audio-routing =

Please don't break the line, see e.g. x1e80100-crd.dts

> + "SpkrLeft IN", "WSA_SPK1 OUT",
> + "SpkrRight IN", "WSA_SPK2 OUT",

Oh, this thing has a speaker!

[...]

> +&pmc8280_1_gpios {
> + edp_bl_en: edp-bl-en-state {
> + pins = "gpio8";
> + function = "normal";
> + };
> +
> + edp_bl_reg_en: edp-bl-reg-en-state {
> + pins = "gpio9";
> + function = "normal";
> + };
> +
> + misc_3p3_reg_en: misc-3p3-reg-en-state {
> + pins = "gpio1";
> + function = "normal";
> + };

Sorting GPIOs by their number is preferred

https://docs.kernel.org/devicetree/bindings/dts-coding-style.html#order-of-nodes

[...]

> +&tlmm {
> + gpio-reserved-ranges = <70 2>, <74 6>, <125 2>, <128 2>, <154 4>;

Do we know what these are for? If so, please describe it (also
like in x1e80100-crd.dts)

Konrad