Re: [RFC v2 6/8] MIPS: DTS: jz4780: account for Synopsys HDMI driver and LCD controller

[Paul Cercueil <paul@xxxxxxxxxxxxxxx>]

Hi Nikolaus,


Le ven., févr. 28, 2020 at 19:19, H. Nikolaus Schaller 
<hns@xxxxxxxxxxxxx> a écrit :
> From: Paul Boddie <paul@xxxxxxxxxxxxx>
>
> A specialisation of the generic Synopsys HDMI driver is employed for 
> JZ4780
> HDMI support. This requires a new driver, plus device tree and 
> configuration
> modifications.
>
> Signed-off-by: Paul Boddie <paul@xxxxxxxxxxxxx>
> Signed-off-by: H. Nikolaus Schaller <hns@xxxxxxxxxxxxx>
> ---
>  arch/mips/boot/dts/ingenic/jz4780.dtsi | 32 
> ++++++++++++++++++++++++++
>  1 file changed, 32 insertions(+)
>
> diff --git a/arch/mips/boot/dts/ingenic/jz4780.dtsi 
> b/arch/mips/boot/dts/ingenic/jz4780.dtsi
> index f928329b034b..391d4e1efd35 100644
> --- a/arch/mips/boot/dts/ingenic/jz4780.dtsi
> +++ b/arch/mips/boot/dts/ingenic/jz4780.dtsi
> @@ -433,4 +433,36 @@
>
>  		status = "disabled";
>  	};
> +
> +	hdmi: hdmi@10180000 {
> +		compatible = "ingenic,jz4780-dw-hdmi";
> +		reg = <0x10180000 0x8000>;
> +		reg-io-width = <4>;
> +
> +		clocks = <&cgu JZ4780_CLK_HDMI>, <&cgu JZ4780_CLK_AHB0>;
> +		clock-names = "isfr" , "iahb";
> +
> +		assigned-clocks = <&cgu JZ4780_CLK_HDMI>;
> +		assigned-clock-rates = <27000000>;

I *think* this should go to the board file.

> +
> +		interrupt-parent = <&intc>;
> +		interrupts = <3>;
> +
> +		/* ddc-i2c-bus = <&i2c4>; */
> +
> +		status = "disabled";
> +	};
> +
> +	lcd: lcd@13050000 {

The node name should be 'lcd-controller'.

> +		compatible = "ingenic,jz4740-lcd";

The JZ4780's LCD controller is much newer than the JZ4740 one, so even 
if it works with the "ingenic,jz4740-lcd" compatible string, you want 
it as a fallback.
So this should be: compatible = "ingenic,jz4780-lcd", 
"ingenic,jz4740-lcd".

That means the YAML should be updated too.

-Paul

> +		reg = <0x13050000 0x1800>;
> +
> +		clocks = <&cgu JZ4780_CLK_TVE>, <&cgu JZ4780_CLK_LCD0PIXCLK>;
> +		clock-names = "lcd", "lcd_pclk";
> +
> +		interrupt-parent = <&intc>;
> +		interrupts = <31>;
> +
> +		status = "disabled";
> +	};
>  };
> --
> 2.23.0