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Message-ID: <2fa9d6e5-d301-4226-aef8-6d691cd392fa@linaro.org>
Date: Thu, 6 Jun 2024 12:38:41 +0200
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Subject: Re: [PATCH v5] arch: arm64: dts: sm8650-hdk: add support for the
 Display Card overlay
To: Neil Armstrong <neil.armstrong@linaro.org>,
 Bjorn Andersson <andersson@kernel.org>, Rob Herring <robh@kernel.org>,
 Krzysztof Kozlowski <krzk+dt@kernel.org>, Conor Dooley <conor+dt@kernel.org>
Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
 linux-kernel@vger.kernel.org,
 Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
References: <20240606-topic-sm8650-upstream-hdk-v5-1-5d878f3047e3@linaro.org>
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From: Konrad Dybcio <konrad.dybcio@linaro.org>
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In-Reply-To: <20240606-topic-sm8650-upstream-hdk-v5-1-5d878f3047e3@linaro.org>
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On 6.06.2024 10:16 AM, Neil Armstrong wrote:
> With the SM8650-HDK, a Display Card kit can be connected to provide
> a VTDR6130 display with Goodix Berlin Touch controller.
> 
> In order to route the DSI lanes to the connector for the Display
> Card kit, a switch must be changed on the board.
> 
> The HDMI nodes are disabled since the DSI lanes are shared with
> the DSI to HDMI transceiver.
> 
> Add support for this card as an overlay and apply it it at
> build-time to the sm8650-hdk dtb.
> 
> Reviewed-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
> Tested-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
> ---

[...]

> +

/* Disable HDMI bridge related nodes (mutually exclusive with the display card) */
> +&i2c6 {
> +	status = "disabled";
> +};
> +
> +&lt9611_1v2 {
> +	status = "disabled";
> +};
> +
> +&lt9611_3v3 {
> +	status = "disabled";
> +};
> +
> +&vreg_bob_3v3 {
> +	status = "disabled";
> +};
> +
> +&lt9611_codec {
> +	status = "disabled";
> +};
> +
> +&mdss_dsi0 {
> +	#address-cells = <1>;
> +	#size-cells = <0>;
> +
> +	panel@0 {
> +		compatible = "visionox,vtdr6130";
> +		reg = <0>;
> +
> +		reset-gpios = <&tlmm 133 GPIO_ACTIVE_LOW>;
> +
> +		vddio-supply = <&vreg_l12b_1p8>;
> +		vci-supply = <&vreg_l13b_3p0>;
> +		vdd-supply = <&vreg_l11b_1p2>;
> +
> +		pinctrl-0 = <&disp0_reset_n_active>, <&mdp_vsync>;
> +		pinctrl-1 = <&disp0_reset_n_suspend>, <&mdp_vsync>;
> +		pinctrl-names = "default", "sleep";
> +
> +		port {
> +			panel0_in: endpoint {
> +				remote-endpoint = <&mdss_dsi0_out>;
> +			};
> +		};
> +	};
> +
> +	/*
> +	 * DTC requires to have both endpoints when compiling the overlay
> +	 * and also requires the #address/size-cells + reg properties
> +	 */

[...]

> +	/* DTC requires the #address/size-cells to compile DTBO */

I think we can leave out such comments, if somebody tries to "clean it up",
dtc will scream

with that:

Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>

Konrad