Describe the external audio clocks (signals AUDIO_CLK[ABC]) required by
the sound driver. Boards that provide audio clocks need to override the
clock frequencies.
This patch is based on the commit 0d3dbde84a45 ("ARM: shmobile: r8a7791:
add audio clock on DTSI").
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>
---
Changes in version 3:
- removed now redundant "clock-output-names" properties;
- reformatted the changelog;
- refreshed the patch.
arch/arm/boot/dts/r8a7794.dtsi | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
Index: renesas/arch/arm/boot/dts/r8a7794.dtsi
===================================================================
--- renesas.orig/arch/arm/boot/dts/r8a7794.dtsi
+++ renesas/arch/arm/boot/dts/r8a7794.dtsi
@@ -920,6 +920,27 @@
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_clka: audio_clka {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <0>;
+ };
+ audio_clkb: audio_clkb {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <0>;
+ };
+ audio_clkc: audio_clkc {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <0>;
+ };
+
/* Special CPG clocks */
cpg_clocks: cpg_clocks@e6150000 {
compatible = "renesas,r8a7794-cpg-clocks",
