linux-kernel - Re: [PATCH v9 3/3] arm64: dts: qcom: sc8280xp-blackrock: dt definition for WDK2023

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Message-ID: <0352b36d-92fa-42ba-bc20-40cef0f9ea42@oss.qualcomm.com>
Date: Tue, 3 Dec 2024 10:38:27 +0530
From: Krishna Kurapati <krishna.kurapati@....qualcomm.com>
To: jens.glathe@...schoolsolutions.biz,
        Bjorn Andersson
 <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>
Cc: Kalle Valo <kvalo@...nel.org>, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Rob Herring <robh@...nel.org>, Merck Hung <merckhung@...il.com>,
        xlazom00@...il.com, Conor Dooley <conor+dt@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>
Subject: Re: [PATCH v9 3/3] arm64: dts: qcom: sc8280xp-blackrock: dt
 definition for WDK2023



On 12/3/2024 1:29 AM, Jens Glathe via B4 Relay wrote:
> From: Jens Glathe <jens.glathe@...schoolsolutions.biz>
> 
> Device tree for the Microsoft Windows Dev Kit 2023. This work
> is based on the initial work of Merck Hung <merckhung@...il.com>.
> 
> 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@...schoolsolutions.biz>
> ---
>   arch/arm64/boot/dts/qcom/Makefile                  |    1 +
>   .../boot/dts/qcom/sc8280xp-microsoft-blackrock.dts | 1325 ++++++++++++++++++++
>   2 files changed, 1326 insertions(+)
> 

[..]

> +&usb_0 {
> +	status = "okay";
> +};
> +
> +&usb_0_dwc3 {
> +	dr_mode = "host";
> +};
> +
> +&usb_0_dwc3_hs {
> +	remote-endpoint = <&pmic_glink_con0_hs>;
> +};
> +
> +&usb_0_hsphy {
> +	vdda-pll-supply = <&vreg_l9d>;
> +	vdda18-supply = <&vreg_l1c>;
> +	vdda33-supply = <&vreg_l7d>;
> +
> +	status = "okay";
> +};
> +
> +&usb_0_qmpphy {
> +	vdda-phy-supply = <&vreg_l4d>;
> +	vdda-pll-supply = <&vreg_l9d>;
> +
> +	orientation-switch;
> +
> +	status = "okay";
> +};
> +
> +&usb_0_qmpphy_dp_in {
> +	remote-endpoint = <&mdss0_dp0_out>;
> +};
> +
> +&usb_0_qmpphy_out {
> +	remote-endpoint = <&pmic_glink_con0_ss>;
> +};
> +
> +&usb_1 {
> +	status = "okay";
> +};
> +
> +&usb_1_dwc3 {
> +	dr_mode = "host";
> +};
> +
> +&usb_1_dwc3_hs {
> +	remote-endpoint = <&pmic_glink_con1_hs>;
> +};
> +
> +&usb_1_hsphy {
> +	vdda-pll-supply = <&vreg_l4b>;
> +	vdda18-supply = <&vreg_l1c>;
> +	vdda33-supply = <&vreg_l13c>;
> +
> +	status = "okay";
> +};
> +
> +&usb_1_qmpphy {
> +	vdda-phy-supply = <&vreg_l3b>;
> +	vdda-pll-supply = <&vreg_l4b>;
> +
> +	orientation-switch;
> +
> +	status = "okay";
> +};
> +
> +&usb_1_qmpphy_dp_in {
> +	remote-endpoint = <&mdss0_dp1_out>;
> +};
> +
> +&usb_1_qmpphy_out {
> +	remote-endpoint = <&pmic_glink_con1_ss>;
> +};
> +
> +&usb_2 {
> +	pinctrl-0 = <&usb2_en_state>;
> +	pinctrl-names = "default";
> +
> +	status = "okay";
> +};
> +
> +&usb_2_dwc3 {
> +	phys = <&usb_2_hsphy0>, <&usb_2_qmpphy0>;
> +	phy-names = "usb2-0", "usb3-0";

Thanks for fixing this up.

> +};
> +
> +&usb_2_hsphy0 {
> +	vdda-pll-supply = <&vreg_l1b>;
> +	vdda18-supply = <&vreg_l1c>;
> +	vdda33-supply = <&vreg_l7d>;
> +
> +	status = "okay";
> +};
> +
> +&usb_2_qmpphy0 {
> +	vdda-phy-supply = <&vreg_l1b>;
> +	vdda-pll-supply = <&vreg_l4d>;
> +
> +	status = "okay";
> +};
> +

The regulators seem fine.

Although functionally unused, there is one more connector node that runs 
between QMPPHY and DWC3 node. For example in [1], please check 
"usb_dp_qmpphy_usb_ss_in" and "usb_1_dwc3_ss"

Would be good to check why it is missing and add it further.

[1]: 
https://github.com/torvalds/linux/blob/master/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts 


Regards,
Krishna,