arm64: dts: renesas: r8a77965: Add CAN{0,1} placeholder nodes

According to R-Car Gen3 HW manual rev1.00, R-Car M3-N has two CAN
interfaces, similar to H3, M3-W and other SoCs from the same family.

Add CAN placeholder nodes to avoid below DTC errors:
Error: arch/arm64/boot/dts/renesas/ulcb-kf.dtsi:19.1-6 Label or path can0 not found
Error: arch/arm64/boot/dts/renesas/ulcb-kf.dtsi:25.1-6 Label or path can1 not found

These errors occur *after* the addition of r8a77965-m3nulcb-kf.dts.
Fix them beforehand.

CAN support is inspired from below commits:
 - v4.7 commit 308b7e4ba62e ("arm64: dts: r8a7795: Add CAN support")
 - v4.11 commit 909c16252415 ("arm64: dts: r8a7796: Add CAN support")
 - v4.12 commit bec0948e810f ("arm64: dts: r8a7796: Add reset control properties")

Signed-off-by: Eugeniu Rosca <erosca@de.adit-jv.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
[simon: make placeholder minimal by only including reg property]
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

diff --git a/arch/arm64/boot/dts/renesas/r8a77965.dtsi b/arch/arm64/boot/dts/renesas/r8a77965.dtsi
index 7a75c351edd26fed55ea6a8bd3f56bc94efdae5c..e7128fb65e336e6c3b8fb7b7bdef4c2bbfccb9e7 100644 (file)
--- a/arch/arm64/boot/dts/renesas/r8a77965.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77965.dtsi
@@ -862,6 +862,16 @@ avb: ethernet@e6800000 {
                        status = "disabled";
                };
 
+               can0: can@e6c30000 {
+                       reg = <0 0xe6c30000 0 0x1000>;
+                       /* placeholder */
+               };
+
+               can1: can@e6c38000 {
+                       reg = <0 0xe6c38000 0 0x1000>;
+                       /* placeholder */
+               };
+
                pwm0: pwm@e6e30000 {
                        compatible = "renesas,pwm-r8a77965", "renesas,pwm-rcar";
                        reg = <0 0xe6e30000 0 8>;