arm64: dts: r8a7796: Add external audio clocks

Add the external audio clocks as zero Hz fixed-frequency clocks.
Boards that provide these clocks should override them.

Based on commit 623197b90c7aa97c ("arm64: renesas: r8a7795: Sound SSI
PIO support").

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

diff --git a/arch/arm64/boot/dts/renesas/r8a7796.dtsi b/arch/arm64/boot/dts/renesas/r8a7796.dtsi
index 2ec1ed5..101cd41 100644 (file)
--- a/arch/arm64/boot/dts/renesas/r8a7796.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a7796.dtsi
@@ -120,6 +120,29 @@
                clock-frequency = <0>;
        };
 
+       /*
+        * The external audio clocks are configured as 0 Hz fixed frequency
+        * clocks by default.
+        * Boards that provide audio clocks should override them.
+        */
+       audio_clk_a: audio_clk_a {
+               compatible = "fixed-clock";
+               #clock-cells = <0>;
+               clock-frequency = <0>;
+       };
+
+       audio_clk_b: audio_clk_b {
+               compatible = "fixed-clock";
+               #clock-cells = <0>;
+               clock-frequency = <0>;
+       };
+
+       audio_clk_c: audio_clk_c {
+               compatible = "fixed-clock";
+               #clock-cells = <0>;
+               clock-frequency = <0>;
+       };
+
        /* External CAN clock - to be overridden by boards that provide it */
        can_clk: can {
                compatible = "fixed-clock";