arm64: dts: r8a7796: Add CAN external clock support

Adds external CAN clock node for r8a7796. This clock can be used as
fCAN clock of CAN and CAN FD controller.

Based on a patch for r8a7795 by Ramesh Shanmugasundaram.

Signed-off-by: Chris Paterson <chris.paterson2@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

1 files changed, 7 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/renesas/r8a7796.dtsi b/arch/arm64/boot/dts/renesas/r8a7796.dtsi
index 4bf8e14956fe..c0f9ced8df7e 100644
--- a/arch/arm64/boot/dts/renesas/r8a7796.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a7796.dtsi
@@ -69,6 +69,13 @@
                 clock-frequency = <0>;
         };
 
+        /* External CAN clock - to be overridden by boards that provide it */
+        can_clk: can {
+                compatible = "fixed-clock";
+                #clock-cells = <0>;
+                clock-frequency = <0>;
+        };
+
         /* External SCIF clock - to be overridden by boards that provide it */
         scif_clk: scif {
                 compatible = "fixed-clock";