linux-kernel - Re: [PATCH 2/3] arm64: dts: qcom: Add support for X1E80100 Dell Inspirion 14 Plus 7441

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Message-ID: <891c7909-69ef-4d9c-a99c-8d6d08dbfd02@oss.qualcomm.com>
Date: Fri, 25 Apr 2025 22:06:07 +0200
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] arm64: dts: qcom: Add support for X1E80100 Dell
 Inspirion 14 Plus 7441

On 4/24/25 1:53 AM, Bryan O'Donoghue wrote:
> Add support for Dell Inspiron 14p 7441.
> 
> Working:
> - WiFi
> - Bluetooth
> - USB Type-C x 2
> - USB Type-A
> - USB Finger Print reader
> - Display
> - NVME
> - Keyboard
> - Touchpad
> 
> WIP not included:
> - Audio
> - Camera
> - Embedded Controller
> - Battery
> 
> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
> ---

[...]

> +		pinctrl-names = "default";
> +		pinctrl-0 = <&cam_indicator_en>;

property-n
property-names

file-wide, please

[...]

> +	/*
> +	 * TODO: These two regulators are actually part of the removable M.2
> +	 * card and not the CRD mainboard. Need to describe this differently.
> +	 * Functionally it works correctly, because all we need to do is to
> +	 * turn on the actual 3.3V supply above.
> +	 */

Well there's definitely no CRD mainboard in there.. not quite, anyway

[...]

> +&i2c5 {
> +	clock-frequency = <400000>;
> +
> +	status = "okay";
> +
> +	/* Type A Port1 */

But there only seems to be one?

[...]

> +	/* FRP eUSB */

Factory Reset Protection?

Please spell out Fingerprint scanner if that's what that is

[...]

> +&i2c20 {
> +	/* GPIO_80, GPIO_81 */

That can be tracked down by looking up the node definition, it
would be however good to know what sits on this bus and at what
addresses

[...]

> +	cam_rgb_default: cam-rgb-default-state {
> +		mclk-pins {
> +			/* cam_aon_mclk4 */

I don't think this comment adds much

[...]

> +&usb_mp_dwc3 {
> +	phys = <&usb_mp_hsphy0>, <&usb_mp_qmpphy0>;
> +	phy-names = "usb2-0", "usb3-0";

Any reason to limit these?

looks nice otherwise

Konrad