linux-kernel - Re: [PATCH v2 3/3] arm64: dts: qcom: Add support for X1-based Dell XPS 13 9345

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Message-ID: <effqouni7fmzpag6g6e2t6uq4tltjiufynjhym3rmrpylezydt@ipqglqizisqr>
Date: Wed, 25 Sep 2024 00:15:40 +0200
From: Bjorn Andersson <andersson@...nel.org>
To: Aleksandrs Vinarskis <alex.vinarskis@...il.com>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>, 
	Dmitry Baryshkov <dmitry.baryshkov@...aro.org>, linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, Konrad Dybcio <konradybcio@...nel.org>, 
	Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
	Conor Dooley <conor+dt@...nel.org>, Rob Clark <robdclark@...il.com>, 
	Peter de Kraker <peterdekraker@...to.nl>
Subject: Re: [PATCH v2 3/3] arm64: dts: qcom: Add support for X1-based Dell
 XPS 13 9345

On Sat, Sep 21, 2024 at 06:33:33PM GMT, Aleksandrs Vinarskis wrote:
> Initial support for Dell XPS 9345 13" 2024 (Tributo) based on X1E80100.

Very nice.

> 
> Working:
> * Touchpad
> * Keyboard (only post suspend&resume, i2c-hid patch WIP)

Hitting scroll lock/unlock on a USB keyboard once fixes this issue for
me as well. Looking forward to your WIP patch.

> * eDP, with brightness control
> * NVME
> * USB Type-C ports in USB2/USB3 (one orientation)
> * WiFi
> * GPU/aDSP/cDSP firmware loading (requires binaries from Windows)
> * Lid switch
> * Sleep/suspend, nothing visibly broken on resume
> 
> Not working:
> * Speakers (WIP, pin guessing, x4 WSA8845)
> * Microphones (WIP, pin guessing)
> * Fingerprint Reader (WIP, USB MP with ptn3222)
> * USB as DP/USB3 (WIP, PS8830 based)
> * Camera
> * Battery Info

Adding the ADSP firmware gave me both battery status and info, but
perhaps you're hitting the previously reported issue in pmic_glink?

> 
> Should be working, but cannot be tested due to lack of hw:
> * Higher res OLED, higher res IPS panels

I tried closing the lid and opening it again (which I believe is what
was reported to not work on the other devices), and that seems to work
fine.

> * Touchscreen

See below

> 
[..]
> diff --git a/arch/arm64/boot/dts/qcom/x1e80100-dell-tributo-13.dts b/arch/arm64/boot/dts/qcom/x1e80100-dell-tributo-13.dts
[..]
> +&i2c8 {
> +	clock-frequency = <400000>;
> +
> +	status = "okay";
> +
> +	touchscreen@0 {
> +		compatible = "hid-over-i2c";
> +		reg = <0x0>;

Make this 0x10 (and update the unit address accordingly) and we have
touchscreen.
> +
> +		hid-descr-addr = <0x1>;
> +		interrupts-extended = <&tlmm 51 IRQ_TYPE_LEVEL_LOW>;
> +
> +		pinctrl-0 = <&ts0_default>;
> +		pinctrl-names = "default";
> +	};
> +};
[..]
> +&mdss_dp3 {
> +	compatible = "qcom,x1e80100-dp";

This isn't needed, right?

[..]
> +&uart21 {

This fails to probe, because we don't have an alias for it, which in
turn prevents sync_state on interconnects...

> +	compatible = "qcom,geni-debug-uart";
> +	status = "okay";
> +};
> +

Regards,
Bjorn