linux-kernel - Re: [PATCH 5/8] arm64: dts: renesas: r8a77995: Add LVDS support

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Date:   Thu, 15 Feb 2018 14:24:58 +0000
From:   Kieran Bingham <kieran.bingham@...asonboard.com>
To:     Laurent Pinchart <laurent.pinchart@...asonboard.com>
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,
        Kieran Bingham <kieran.bingham+renesas@...asonboard.com>,
        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 5/8] arm64: dts: renesas: r8a77995: Add LVDS support

On 15/02/18 14:10, Laurent Pinchart wrote:
> Hi Kieran,
> 
> Thank you for the patch.
> 
> On Thursday, 15 February 2018 10:38:20 EET Kieran Bingham wrote:
>> From: Kieran Bingham <kieran.bingham+renesas@...asonboard.com>
>>
>> The r8a77995 D3 platform has 2 LVDS channels connected to the DU.
>>
>> Signed-off-by: Kieran Bingham <kieran.bingham+renesas@...asonboard.com>
>> ---
>>  arch/arm64/boot/dts/renesas/r8a77995.dtsi | 52 ++++++++++++++++++++++++++++
>>  1 file changed, 52 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/renesas/r8a77995.dtsi
>> b/arch/arm64/boot/dts/renesas/r8a77995.dtsi index
>> a57d5fecf79c..7851e37cfff1 100644
>> --- a/arch/arm64/boot/dts/renesas/r8a77995.dtsi
>> +++ b/arch/arm64/boot/dts/renesas/r8a77995.dtsi
>> @@ -773,18 +773,70 @@
>>  				port@1 {
>>  					reg = <1>;
>>  					du_out_lvds0: endpoint {
>> +						remote-endpoint = <&du_out_lvds0>;
>>  					};
>>  				};
>>
>>  				port@2 {
>>  					reg = <2>;
>>  					du_out_lvds1: endpoint {
>> +						remote-endpoint = <&du_out_lvds1>;
> 
> It's interesting how the DU ports reference themselves :-)

Ah, yes - that's ...  that's a feature...

--
Kieran



>>  					};
>>  				};
>>  			};
>>  		};
>>  	};
>>
>> +	lvds0: lvds@...90000 {
>> +		compatible = "renesas,lvds-r8a77995";
>> +		reg = <0 0xfeb90000 0 0x20>;
>> +		clocks = <&cpg CPG_MOD 727>;
>> +		status = "disabled";
>> +
>> +		ports {
>> +			#address-cells = <1>;
>> +			#size-cells = <0>;
>> +
>> +			port@0 {
>> +				reg = <0>;
>> +				lvds0_in: endpoint {
>> +					remote-endpoint = <&du_out_lvds0>;
>> +				};
>> +			};
>> +
>> +			port@1 {
>> +				reg = <1>;
>> +				lvds0_out: endpoint {
>> +				};
>> +			};
>> +		};
>> +	};
>> +
>> +	lvds1: lvds@...90100 {
>> +		compatible = "renesas,lvds-r8a77995";
>> +		reg = <0 0xfeb90100 0 0x20>;
>> +		clocks = <&cpg CPG_MOD 727>;
>> +		status = "disabled";
>> +
>> +		ports {
>> +			#address-cells = <1>;
>> +			#size-cells = <0>;
>> +
>> +			port@0 {
>> +				reg = <0>;
>> +				lvds1_in: endpoint {
>> +					remote-endpoint = <&du_out_lvds1>;
>> +				};
>> +			};
>> +
>> +			port@1 {
>> +				reg = <1>;
>> +				lvds1_out: endpoint {
>> +				};
>> +			};
>> +		};
>> +	};
>> +
>>  	timer {
>>  		compatible = "arm,armv8-timer";
>>  		interrupts-extended = <&gic GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(1) |
>> IRQ_TYPE_LEVEL_LOW)>,
>