linux-kernel - Re: [RFC 1/8] dt-bindings: video: Add jz4780-lcd binding

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Date:   Tue, 3 Mar 2020 08:42:40 -0600
From:   Rob Herring <robh@...nel.org>
To:     "H. Nikolaus Schaller" <hns@...delico.com>
Cc:     Paul Cercueil <paul@...pouillou.net>,
        Paul Boddie <paul@...die.org.uk>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Mark Rutland <mark.rutland@....com>,
        Ralf Baechle <ralf@...ux-mips.org>,
        Paul Burton <paulburton@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Andi Kleen <ak@...ux.intel.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-mips@...r.kernel.org,
        linux-gpio@...r.kernel.org, letux-kernel@...nphoenux.org,
        kernel@...a-handheld.com,
        Zubair Lutfullah Kakakhel <Zubair.Kakakhel@...tec.com>
Subject: Re: [RFC 1/8] dt-bindings: video: Add jz4780-lcd binding

On Wed, Feb 26, 2020 at 08:12:53PM +0100, H. Nikolaus Schaller wrote:
> From: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@...tec.com>
> 
> Add DT bindings for the LCD controller on the jz4780 SoC
> 
> Signed-off-by: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@...tec.com>
> ---
>  .../bindings/display/ingenic-jz4780-lcd.txt   | 39 +++++++++++++++++++
>  1 file changed, 39 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/ingenic-jz4780-lcd.txt
> 
> diff --git a/Documentation/devicetree/bindings/display/ingenic-jz4780-lcd.txt b/Documentation/devicetree/bindings/display/ingenic-jz4780-lcd.txt
> new file mode 100644
> index 000000000000..8512ce3f93df
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/ingenic-jz4780-lcd.txt
> @@ -0,0 +1,39 @@
> +Bindings for Ingenic JZ4780 LCD Controller
> +
> +LCD Controller is the Display Controller for the Ingenic JZ4780 SoC
> +
> +Required properties:
> +- compatible: should be "ingenic,jz4780-lcd"
> +- reg: Should contain the address & size of the LCD controller registers.
> +- interrupts: Should specify the interrupt provided by parent.
> +- clocks: Should contain two clock specifiers for the JZ4780_CLK_TVE JZ4780_CLK_LCD0PIXCLK.
> +- clock-names : Must be "lcd_clk", "lcd_pixclk";
> +- port: A port node with endpoint definitions as defined in
> +  Documentation/devicetree/bindings/media/video-interfaces.txt.
> +
> +Optional properties:
> +- interrupt-parent: phandle to parent interrupt controller

Drop this. 'interrupt-parent' is always valid and could be in a parent 
node.

> +
> +Example:
> +
> +lcd: jz4780-lcdk@...3050000 {

Drop the '0x'.

> +	compatible = "ingenic,jz4780-lcd";
> +	reg = <0x13050000 0x1800>;
> +
> +	clocks = <&cgu JZ4780_CLK_TVE>, <&cgu JZ4780_CLK_LCD0PIXCLK>;
> +	clock-names = "lcd_clk", "lcd_pixclk";
> +
> +	interrupt-parent = <&intc>;
> +	interrupts = <31>;
> +
> +	jz4780_lcd_out: port {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +
> +			jz4780_out_hdmi: endpoint@0 {
> +				reg = <0>;

Don't need an address as there's only 1 endpoint.

> +				remote-endpoint = <&hdmi_in_lcd>;
> +			};
> +		};
> +
> +};
> -- 
> 2.23.0
>