Re: [PATCH v7 10/11] ARM: at91/dt: add LCD panel description to sama5d3xdm.dtsi

[Thierry Reding]

On Wed, Oct 01, 2014 at 04:53:07PM +0200, Boris Brezillon wrote:
[...]
> diff --git a/arch/arm/boot/dts/sama5d3xdm.dtsi b/arch/arm/boot/dts/sama5d3xdm.dtsi
[...]
> +	bl_reg: backlight_regulator {
> +		compatible = "regulator-fixed";
> +		regulator-name = "backlight-power-supply";
> +		regulator-min-microvolt = <5000000>;
> +		regulator-max-microvolt = <5000000>;
> +		status = "disabled";
> +	};
> +
> +	panel_reg: panel_regulator {
> +		compatible = "regulator-fixed";
> +		regulator-name = "panel-power-supply";
> +		regulator-min-microvolt = <3300000>;
> +		regulator-max-microvolt = <3300000>;
> +		status = "disabled";
> +	};
> +
> +	backlight: backlight {
> +		compatible = "pwm-backlight";
> +		pwms = <&hlcdc_pwm 0 50000 0>;
> +		brightness-levels = <0 4 8 16 32 64 128 255>;
> +		default-brightness-level = <6>;
> +		power-supply = <&bl_reg>;
> +		status = "disabled";
> +	};

Why are these all disabled? Patch 11/11 now needs to enable all of them
explicitly for each board that uses this display module.

> +	panel: panel {
> +		compatible = "foxlink,fl500wvr00-a0t", "simple-panel";

"simple-panel" shouldn't be in this list. There's nothing useful a
driver can do by matching on it.

> +		backlight = <&backlight>;
> +		power-supply = <&panel_reg>;
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +		status = "disabled";
> +
> +		port@0 {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +
> +			panel_input: endpoint@0 {
> +				reg = <0>;
> +				remote-endpoint = <&hlcdc_panel_output>;
> +			};
>  		};

There's no support for OF graphs in simple-panel, so this is unused,
isn't it?

Thierry

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