From: Simon Horman <horms+renesas@verge.net.au>
Date: Wed, 2 Dec 2015 08:16:12 +0000 (+0900)
Subject: ARM: dts: r8a7793: add audio clock to device tree
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=ad6472bf11464d498fefcea9ae30ddf9255e4f49;p=linux-beck.git

ARM: dts: r8a7793: add audio clock to device tree

Instantiate audio clock in r8a7793 device tree.
audio_clk_a/b/c are required for R-Car sound.

Based on similar work for the r8a7791 by Kuninori Morimoto.

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

diff --git a/arch/arm/boot/dts/r8a7793.dtsi b/arch/arm/boot/dts/r8a7793.dtsi
index c4459f147330..530fa9488a4a 100644
--- a/arch/arm/boot/dts/r8a7793.dtsi
+++ b/arch/arm/boot/dts/r8a7793.dtsi
@@ -706,6 +706,29 @@
 			clock-output-names = "extal";
 		};
 
+		/*
+		 * 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>;
+			clock-output-names = "audio_clk_a";
+		};
+		audio_clk_b: audio_clk_b {
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+			clock-frequency = <0>;
+			clock-output-names = "audio_clk_b";
+		};
+		audio_clk_c: audio_clk_c {
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+			clock-frequency = <0>;
+			clock-output-names = "audio_clk_c";
+		};
+
 		/* Special CPG clocks */
 		cpg_clocks: cpg_clocks@e6150000 {
 			compatible = "renesas,r8a7793-cpg-clocks",