arm64: dts: renesas: r8a779a0: Add CANFD device node

This patch adds a CANFD device node for r8a779a0.

Based on patch by Kazuya Mizuguchi.

Signed-off-by: Ulrich Hecht <uli+renesas@fpond.eu>
Link: https://lore.kernel.org/r/20220309162609.3726306-3-uli+renesas@fpond.eu
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

diff --git a/arch/arm64/boot/dts/renesas/r8a779a0.dtsi b/arch/arm64/boot/dts/renesas/r8a779a0.dtsi
index c4be288..c80f458 100644 (file)
--- a/arch/arm64/boot/dts/renesas/r8a779a0.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a779a0.dtsi
@@ -24,6 +24,13 @@
                i2c6 = &i2c6;
        };
 
+       /* External CAN clock - to be overridden by boards that provide it */
+       can_clk: can {
+               compatible = "fixed-clock";
+               #clock-cells = <0>;
+               clock-frequency = <0>;
+       };
+
        cpus {
                #address-cells = <1>;
                #size-cells = <0>;
@@ -596,6 +603,55 @@
                        status = "disabled";
                };
 
+               canfd: can@e6660000 {
+                       compatible = "renesas,r8a779a0-canfd";
+                       reg = <0 0xe6660000 0 0x8000>;
+                       interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>,
+                                       <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>;
+                       interrupt-names = "ch_int", "g_int";
+                       clocks = <&cpg CPG_MOD 328>,
+                                <&cpg CPG_CORE R8A779A0_CLK_CANFD>,
+                                <&can_clk>;
+                       clock-names = "fck", "canfd", "can_clk";
+                       assigned-clocks = <&cpg CPG_CORE R8A779A0_CLK_CANFD>;
+                       assigned-clock-rates = <80000000>;
+                       power-domains = <&sysc R8A779A0_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-r8a779a0",
                                     "renesas,etheravb-rcar-gen3";