arm64: dts: renesas: r8a779g0: Add CAN-FD node

Add device nodes for the CAN-FD interface and the related external CAN
clock on the Renesas R-Car V4H (R8A779G0) SoC.

Based on a patch in the BSP by Kazuya Mizuguch.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/6c55d0995089917216ee261a8b8cbb980c7b5304.1674500205.git.geert+renesas@glider.be

diff --git a/arch/arm64/boot/dts/renesas/r8a779g0.dtsi b/arch/arm64/boot/dts/renesas/r8a779g0.dtsi
index 7a87a5dc1b6ad21907c2c658dec28ba55fcf745f..70eaf79569258357d33b0c015d45ae56d6e8cd2f 100644 (file)
--- a/arch/arm64/boot/dts/renesas/r8a779g0.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a779g0.dtsi
@@ -14,6 +14,13 @@
        #address-cells = <2>;
        #size-cells = <2>;
 
+       /* External CAN clock - to be overridden by boards that provide it */
+       can_clk: can {
+               compatible = "fixed-clock";
+               #clock-cells = <0>;
+               clock-frequency = <0>;
+       };
+
        cluster0_opp: opp-table-0 {
                compatible = "operating-points-v2";
                opp-shared;
@@ -682,6 +689,56 @@
                        status = "disabled";
                };
 
+               canfd: can@e6660000 {
+                       compatible = "renesas,r8a779g0-canfd",
+                                    "renesas,rcar-gen4-canfd";
+                       reg = <0 0xe6660000 0 0x8500>;
+                       interrupts = <GIC_SPI 412 IRQ_TYPE_LEVEL_HIGH>,
+                                    <GIC_SPI 413 IRQ_TYPE_LEVEL_HIGH>;
+                       interrupt-names = "ch_int", "g_int";
+                       clocks = <&cpg CPG_MOD 328>,
+                                <&cpg CPG_CORE R8A779G0_CLK_CANFD>,
+                                <&can_clk>;
+                       clock-names = "fck", "canfd", "can_clk";
+                       assigned-clocks = <&cpg CPG_CORE R8A779G0_CLK_CANFD>;
+                       assigned-clock-rates = <80000000>;
+                       power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>;
+                       resets = <&cpg 328>;
+                       status = "disabled";
+
+                       channel0 {
+                               status = "disabled";
+                       };
+
+                       channel1 {
+                               status = "disabled";
+                       };
+
+                       channel2 {
+                               status = "disabled";
+                       };
+
+                       channel3 {
+                               status = "disabled";
+                       };
+
+                       channel4 {
+                               status = "disabled";
+                       };
+
+                       channel5 {
+                               status = "disabled";
+                       };
+
+                       channel6 {
+                               status = "disabled";
+                       };
+
+                       channel7 {
+                               status = "disabled";
+                       };
+               };
+
                avb0: ethernet@e6800000 {
                        compatible = "renesas,etheravb-r8a779g0",
                                     "renesas,etheravb-rcar-gen4";