openwrt/target/linux/sunxi/patches-3.13/126-dt-sun7i-add-external-clock-outputs.patch

From 0aff0370cbffeadc14456556b904c80e30b3717e Mon Sep 17 00:00:00 2001
From: Chen-Yu Tsai <wens@csie.org>
Date: Wed, 1 Jan 2014 10:30:48 +0800
Subject: [PATCH] ARM: dts: sun7i: external clock outputs

This commit adds the two external clock outputs available on A20 to
its device tree. A dummy fixed factor clock is also added to serve as
the first input of the clock outputs, which according to AW's A20 user
manual, is the 24MHz oscillator divided by 750.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
---
 arch/arm/boot/dts/sun7i-a20.dtsi | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi
index edad6f1..0d54998 100644
--- a/arch/arm/boot/dts/sun7i-a20.dtsi
+++ b/arch/arm/boot/dts/sun7i-a20.dtsi
@@ -303,6 +303,34 @@
 			clocks = <&osc24M>, <&pll6 2>, <&pll5 1>;
 			clock-output-names = "mbus";
 		};
+
+		/*
+		 * Dummy clock used by output clocks
+		 */
+		osc24M_32k: clk@1 {
+			#clock-cells = <0>;
+			compatible = "fixed-factor-clock";
+			clock-div = <750>;
+			clock-mult = <1>;
+			clocks = <&osc24M>;
+			clock-output-names = "osc24M_32k";
+		};
+
+		clk_out_a: clk@01c201f0 {
+			#clock-cells = <0>;
+			compatible = "allwinner,sun7i-a20-out-clk";
+			reg = <0x01c201f0 0x4>;
+			clocks = <&osc24M_32k>, <&osc32k>, <&osc24M>;
+			clock-output-names = "clk_out_a";
+		};
+
+		clk_out_b: clk@01c201f4 {
+			#clock-cells = <0>;
+			compatible = "allwinner,sun7i-a20-out-clk";
+			reg = <0x01c201f4 0x4>;
+			clocks = <&osc24M_32k>, <&osc32k>, <&osc24M>;
+			clock-output-names = "clk_out_b";
+		};
 	};
 
 	soc@01c00000 {
-- 
1.8.5.5