Re: [PATCH v2 3/3] arm64: dts: qcom: hamoa-iot-evk: Describe the PCIe M.2 Key E connector

[Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>]

On 7/23/26 11:56 AM, Wei Deng wrote:
> The Hamoa IoT EVK has a PCIe M.2 Mechanical Key E connector for wireless
> connectivity cards exposing Wi-Fi over PCIe and Bluetooth over either
> UART or USB, depending on the card variant.

[...]

> +	wifi-bt-connector {
> +		compatible = "pcie-m2-e-connector";
> +		vpcie3v3-supply = <&vreg_wcn_3p3>;
> +
> +		w-disable1-gpios = <&tlmm 117 GPIO_ACTIVE_LOW>;
> +		w-disable2-gpios = <&tlmm 116 GPIO_ACTIVE_LOW>;
> +
> +		pinctrl-0 = <&wcn_wlan_en>, <&wcn_bt_en>;
> +		pinctrl-names = "default";
> +
> +		ports {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +
> +			/* PCIe for Wi-Fi */

Similarly, this is both defined by bindings and made obvious by
the label you assign to the endpoint

[...]

> +&usb_2 {
> +	ports {
> +		port@1 {

That's why we should use labels and references instead of nested
nodes - you defined a port different to the one in patch 1.

I feel like we should probably define the uart endpoints in the SoC
DTSI as well.

Konrad