arm64: dts: renesas: r8a774b1: Add CAN and CAN FD support

Add CAN and CAN FD support to the RZ/G2N SoC specific dtsi.
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Link: https://lore.kernel.org/r/1570717560-7431-4-git-send-email-fabrizio.castro@bp.renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm64/boot/dts/renesas/r8a774b1.dtsi

@@ -994,18 +994,60 @@ avb: ethernet@e6800000 {
 		};
 
 		can0: can@e6c30000 {
+			compatible = "renesas,can-r8a774b1",
+				     "renesas,rcar-gen3-can";
 			reg = <0 0xe6c30000 0 0x1000>;
-			/* placeholder */
+			interrupts = <GIC_SPI 186 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 916>,
+				 <&cpg CPG_CORE R8A774B1_CLK_CANFD>,
+				 <&can_clk>;
+			clock-names = "clkp1", "clkp2", "can_clk";
+			assigned-clocks = <&cpg CPG_CORE R8A774B1_CLK_CANFD>;
+			assigned-clock-rates = <40000000>;
+			power-domains = <&sysc R8A774B1_PD_ALWAYS_ON>;
+			resets = <&cpg 916>;
+			status = "disabled";
 		};
 
 		can1: can@e6c38000 {
+			compatible = "renesas,can-r8a774b1",
+				     "renesas,rcar-gen3-can";
 			reg = <0 0xe6c38000 0 0x1000>;
-			/* placeholder */
+			interrupts = <GIC_SPI 187 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 915>,
+				 <&cpg CPG_CORE R8A774B1_CLK_CANFD>,
+				 <&can_clk>;
+			clock-names = "clkp1", "clkp2", "can_clk";
+			assigned-clocks = <&cpg CPG_CORE R8A774B1_CLK_CANFD>;
+			assigned-clock-rates = <40000000>;
+			power-domains = <&sysc R8A774B1_PD_ALWAYS_ON>;
+			resets = <&cpg 915>;
+			status = "disabled";
 		};
 
 		canfd: can@e66c0000 {
+			compatible = "renesas,r8a774b1-canfd",
+				     "renesas,rcar-gen3-canfd";
 			reg = <0 0xe66c0000 0 0x8000>;
-			/* placeholder */
+			interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>,
+				   <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 914>,
+				 <&cpg CPG_CORE R8A774B1_CLK_CANFD>,
+				 <&can_clk>;
+			clock-names = "fck", "canfd", "can_clk";
+			assigned-clocks = <&cpg CPG_CORE R8A774B1_CLK_CANFD>;
+			assigned-clock-rates = <40000000>;
+			power-domains = <&sysc R8A774B1_PD_ALWAYS_ON>;
+			resets = <&cpg 914>;
+			status = "disabled";
+
+			channel0 {
+				status = "disabled";
+			};
+
+			channel1 {
+				status = "disabled";
+			};
 		};
 
 		pwm0: pwm@e6e30000 {