arm64: dts: renesas: r8a77965-salvator-x(s): Enable HDMI sound

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Jacopo Mondi <jacopo+renesas@jmondi.org> # Salvator-XS
[geert: Preserve sort order]
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm64/boot/dts/renesas/r8a77965-salvator-x.dts

@@ -41,9 +41,37 @@ rcar_dw_hdmi0_out: endpoint {
 				remote-endpoint = <&hdmi0_con>;
 			};
 		};
+		port@2 {
+			reg = <2>;
+			dw_hdmi0_snd_in: endpoint {
+				remote-endpoint = <&rsnd_endpoint1>;
+			};
+		};
 	};
 };
 
 &hdmi0_con {
 	remote-endpoint = <&rcar_dw_hdmi0_out>;
 };
+
+&rcar_sound {
+	ports {
+		rsnd_port1: port@1 {
+			reg = <1>;
+			rsnd_endpoint1: endpoint {
+				remote-endpoint = <&dw_hdmi0_snd_in>;
+
+				dai-format = "i2s";
+				bitclock-master = <&rsnd_endpoint1>;
+				frame-master = <&rsnd_endpoint1>;
+
+				playback = <&ssi2>;
+			};
+		};
+	};
+};
+
+&sound_card {
+	dais = <&rsnd_port0	/* ak4613 */
+		&rsnd_port1>;	/* HDMI0  */
+};

arch/arm64/boot/dts/renesas/r8a77965-salvator-xs.dts

@@ -41,6 +41,12 @@ rcar_dw_hdmi0_out: endpoint {
 				remote-endpoint = <&hdmi0_con>;
 			};
 		};
+		port@2 {
+			reg = <2>;
+			dw_hdmi0_snd_in: endpoint {
+				remote-endpoint = <&rsnd_endpoint1>;
+			};
+		};
 	};
 };
 
@@ -57,7 +63,29 @@ pcie_sata_switch {
 	};
 };
 
+&rcar_sound {
+	ports {
+		rsnd_port1: port@1 {
+			reg = <1>;
+			rsnd_endpoint1: endpoint {
+				remote-endpoint = <&dw_hdmi0_snd_in>;
+
+				dai-format = "i2s";
+				bitclock-master = <&rsnd_endpoint1>;
+				frame-master = <&rsnd_endpoint1>;
+
+				playback = <&ssi2>;
+			};
+		};
+	};
+};
+
 /* SW12-7 must be set 'Off' (MD12 set to 1) which is not the default! */
 &sata {
 	status = "okay";
 };
+
+&sound_card {
+	dais = <&rsnd_port0	/* ak4613 */
+		&rsnd_port1>;	/* HDMI0  */
+};