linux-kernel - Re: [PATCH 7/8] arm64: dts: renesas: r8a77995-draak: Add HDMI Out through ADV7511

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Message-ID: <2517305.jdPBFiRQEk@avalon>
Date:   Thu, 15 Feb 2018 16:16:00 +0200
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Kieran Bingham <kbingham@...nel.org>
Cc:     linux-renesas-soc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Kieran Bingham <kieran.bingham@...asonboard.com>,
        Simon Horman <horms@...ge.net.au>, geert@...der.be,
        Magnus Damm <magnus.damm@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 7/8] arm64: dts: renesas: r8a77995-draak: Add HDMI Out through ADV7511

Hi Kieran,

Thank you for the patch.

On Thursday, 15 February 2018 10:38:22 EET Kieran Bingham wrote:
> From: Kieran Bingham <kieran.bingham@...asonboard.com>
> 
> Provide a device node for the ADV7511 as found on the Draak D3 platform.
> 
> The ADV7511 is connected to the DU through a parallel mux chip, and is
> configurable in hardware whether it is connected to LVDS0 or LVDS1.
> 
> Connect through to LVDS0 as a default implementation.

You need to model the LVDS decoder in DT too. I know that no driver and no DT 
bindings are available at the moment, and I'm aware that this patch enables 
the HDMI output on the Draak board, but I don't think it's upstreamable as-is.

> Signed-off-by: Kieran Bingham <kieran.bingham@...asonboard.com>
> ---
>  arch/arm64/boot/dts/renesas/r8a77995-draak.dts | 56 +++++++++++++++++++++++
>  1 file changed, 56 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/renesas/r8a77995-draak.dts
> b/arch/arm64/boot/dts/renesas/r8a77995-draak.dts index
> 668e246dfc5d..df0c7773cb7d 100644
> --- a/arch/arm64/boot/dts/renesas/r8a77995-draak.dts
> +++ b/arch/arm64/boot/dts/renesas/r8a77995-draak.dts
> @@ -27,6 +27,17 @@
>  		stdout-path = "serial0:115200n8";
>  	};
> 
> +	hdmi-out {
> +		compatible = "hdmi-connector";
> +		type = "a";
> +
> +		port {
> +			hdmi_con_out: endpoint {
> +				remote-endpoint = <&adv7511_out>;
> +			};
> +		};
> +	};
> +
>  	vga {
>  		compatible = "vga-connector";
> 
> @@ -124,6 +135,39 @@
>  		reg = <0x50>;
>  		pagesize = <8>;
>  	};
> +
> +	hdmi@39 {
> +		compatible = "adi,adv7511w";
> +		reg = <0x39>, <0x3f>, <0x38>, <0x3c>;
> +		reg-names = "main", "edid", "packet", "cec";
> +		interrupt-parent = <&gpio1>;
> +		interrupts = <28 IRQ_TYPE_LEVEL_LOW>;
> +
> +		adi,input-depth = <8>;
> +		adi,input-colorspace = "rgb";
> +		adi,input-clock = "1x";
> +		adi,input-style = <1>;
> +		adi,input-justification = "evenly";
> +
> +		ports {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +
> +			port@0 {
> +				reg = <0>;
> +				adv7511_in: endpoint {
> +					remote-endpoint = <&lvds0_out>;
> +				};
> +			};
> +
> +			port@1 {
> +				reg = <1>;
> +				adv7511_out: endpoint {
> +					remote-endpoint = <&hdmi_con_out>;
> +				};
> +			};
> +		};
> +	};
>  };
> 
>  &i2c1 {
> @@ -146,6 +190,18 @@
>  	};
>  };
> 
> +&lvds0 {
> +	status = "okay";
> +
> +	ports {
> +		port@1 {
> +			endpoint {
> +				remote-endpoint = <&adv7511_in>;
> +			};
> +		};
> +	};
> +};
> +
>  &ehci0 {
>  	status = "okay";
>  };


-- 
Regards,

Laurent Pinchart