arm: dts: r8a774a1: Import DTS queued for Linux 5.12-rc1

Update the RZ/G2M dtsi and r8a774a1-beacon-rzg2m-kit kit
from Renesas repo destined to become 5.12-rc1.

Signed-off-by: Adam Ford <aford173@gmail.com>
diff --git a/arch/arm/dts/r8a774a1-beacon-rzg2m-kit.dts b/arch/arm/dts/r8a774a1-beacon-rzg2m-kit.dts
index e7ed5d4..501cb05 100644
--- a/arch/arm/dts/r8a774a1-beacon-rzg2m-kit.dts
+++ b/arch/arm/dts/r8a774a1-beacon-rzg2m-kit.dts
@@ -10,6 +10,61 @@
 #include "beacon-renesom-baseboard.dtsi"
 
 / {
-	model = "Beacon Embedded Works RZ/G2M Development Kit";
-	compatible =	"beacon,beacon-rzg2m", "renesas,r8a774a1";
+	model = "Beacon EmbeddedWorks RZ/G2M Development Kit";
+	compatible = "beacon,beacon-rzg2m", "renesas,r8a774a1";
+
+	aliases {
+		serial0 = &scif2;
+		serial1 = &hscif0;
+		serial2 = &hscif1;
+		serial3 = &scif0;
+		serial4 = &hscif2;
+		serial5 = &scif5;
+		ethernet0 = &avb;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory@600000000 {
+		device_type = "memory";
+		reg = <0x6 0x00000000 0x0 0x80000000>;
+	};
+};
+
+&du {
+	pinctrl-0 = <&du_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+
+	clocks = <&cpg CPG_MOD 724>,
+		 <&cpg CPG_MOD 723>,
+		 <&cpg CPG_MOD 722>,
+		 <&versaclock5 1>,
+		 <&x302_clk>,
+		 <&versaclock5 2>;
+	clock-names = "du.0", "du.1", "du.2",
+		      "dclkin.0", "dclkin.1", "dclkin.2";
+};
+
+/* Reference versaclock instead of audio_clk_a */
+&rcar_sound {
+	clocks = <&cpg CPG_MOD 1005>,
+		 <&cpg CPG_MOD 1006>, <&cpg CPG_MOD 1007>,
+		 <&cpg CPG_MOD 1008>, <&cpg CPG_MOD 1009>,
+		 <&cpg CPG_MOD 1010>, <&cpg CPG_MOD 1011>,
+		 <&cpg CPG_MOD 1012>, <&cpg CPG_MOD 1013>,
+		 <&cpg CPG_MOD 1014>, <&cpg CPG_MOD 1015>,
+		 <&cpg CPG_MOD 1022>, <&cpg CPG_MOD 1023>,
+		 <&cpg CPG_MOD 1024>, <&cpg CPG_MOD 1025>,
+		 <&cpg CPG_MOD 1026>, <&cpg CPG_MOD 1027>,
+		 <&cpg CPG_MOD 1028>, <&cpg CPG_MOD 1029>,
+		 <&cpg CPG_MOD 1030>, <&cpg CPG_MOD 1031>,
+		 <&cpg CPG_MOD 1020>, <&cpg CPG_MOD 1021>,
+		 <&cpg CPG_MOD 1020>, <&cpg CPG_MOD 1021>,
+		 <&cpg CPG_MOD 1019>, <&cpg CPG_MOD 1018>,
+		 <&versaclock6_bb 4>, <&audio_clk_b>,
+		 <&audio_clk_c>,
+		 <&cpg CPG_CORE R8A774A1_CLK_S0D4>;
 };