Re: [PATCH v3 5/7] arm64: dts: renesas: r8a779g0: Add DSC

[Laurent Pinchart]

Hi Tomi and Marek,

Thank you for the patch.

On Fri, May 15, 2026 at 12:09:30PM +0300, Tomi Valkeinen wrote:
> From: Marek Vasut <marek.vasut+renesas@xxxxxxxxxxx>
> 
> The Renesas DSC Display Stream Compression is a bridge embedded in the
> Renesas R-Car V4H SoC. The bridge is placed between DU and DSI1 units.
> 
> The current dtsi file does not represent the DSC at all, and thus the
> pipeline for DSI1 has not been functional.
> 
> Signed-off-by: Marek Vasut <marek.vasut+renesas@xxxxxxxxxxx>
> [tomi.valkeinen: separated the sparrowhawk changes]
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen+renesas@xxxxxxxxxxxxxxxx>

Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>

> ---
>  arch/arm64/boot/dts/renesas/r8a779g0.dtsi | 31 ++++++++++++++++++++++++++++++-
>  1 file changed, 30 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/boot/dts/renesas/r8a779g0.dtsi b/arch/arm64/boot/dts/renesas/r8a779g0.dtsi
> index 82a7278836e5..52a6176f9fd0 100644
> --- a/arch/arm64/boot/dts/renesas/r8a779g0.dtsi
> +++ b/arch/arm64/boot/dts/renesas/r8a779g0.dtsi
> @@ -2298,6 +2298,35 @@ du_out_dsi0: endpoint {
>  				port@1 {
>  					reg = <1>;
>  					du_out_dsi1: endpoint {
> +						remote-endpoint = <&dsc_in_dsi1>;
> +					};
> +				};
> +			};
> +		};
> +
> +		dsc: dsc@feb8d000 {
> +			compatible = "renesas,r8a779g0-dsc";
> +			reg = <0 0xfeb8d000 0 0x400>;
> +			interrupts = <GIC_SPI 559 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&cpg CPG_MOD 2819>;
> +			power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>;
> +			resets = <&cpg 2819>;
> +			status = "disabled";
> +
> +			ports {
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +
> +				port@0 {
> +					reg = <0>;
> +					dsc_in_dsi1: endpoint {
> +						remote-endpoint = <&du_out_dsi1>;
> +					};
> +				};
> +
> +				port@1 {
> +					reg = <1>;
> +					dsc_out_dsi1: endpoint {
>  						remote-endpoint = <&dsi1_in>;
>  					};
>  				};
> @@ -2534,7 +2563,7 @@ ports {
>  				port@0 {
>  					reg = <0>;
>  					dsi1_in: endpoint {
> -						remote-endpoint = <&du_out_dsi1>;
> +						remote-endpoint = <&dsc_out_dsi1>;
>  					};
>  				};
>  
> 

-- 
Regards,

Laurent Pinchart