linux-kernel - [PATCH v4 07/12] devicetree: Add bindings for the ATH79 PLL controllers

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Date:	Sun, 31 May 2015 01:52:30 +0200
From:	Alban Bedel <albeu@...e.fr>
To:	linux-mips@...ux-mips.org
Cc:	Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Jason Cooper <jason@...edaemon.net>,
	Ralf Baechle <ralf@...ux-mips.org>,
	Alban Bedel <albeu@...e.fr>,
	Andrew Bresticker <abrestic@...omium.org>,
	Qais Yousef <qais.yousef@...tec.com>,
	Gabor Juhos <juhosg@...nwrt.org>, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v4 07/12] devicetree: Add bindings for the ATH79 PLL controllers

Signed-off-by: Alban Bedel <albeu@...e.fr>
---
v2: * Fixed the node names to respect ePAPR
    * Fixed the missing 's' in 'fallbacks' and the 'clocks' property
v3: * Fix the compatible string for qca9550
---
 .../devicetree/bindings/clock/qca,ath79-pll.txt    | 33 ++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/qca,ath79-pll.txt

diff --git a/Documentation/devicetree/bindings/clock/qca,ath79-pll.txt b/Documentation/devicetree/bindings/clock/qca,ath79-pll.txt
new file mode 100644
index 0000000..e0fc2c1
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/qca,ath79-pll.txt
@@ -0,0 +1,33 @@
+Binding for Qualcomm Atheros AR7xxx/AR9XXX PLL controller
+
+The PPL controller provides the 3 main clocks of the SoC: CPU, DDR and AHB.
+
+Required Properties:
+- compatible: has to be "qca,<soctype>-cpu-intc" and one of the following
+  fallbacks:
+  - "qca,ar7100-pll"
+  - "qca,ar7240-pll"
+  - "qca,ar9130-pll"
+  - "qca,ar9330-pll"
+  - "qca,ar9340-pll"
+  - "qca,qca9550-pll"
+- reg: Base address and size of the controllers memory area
+- clock-names: Name of the input clock, has to be "ref"
+- clocks: phandle of the external reference clock
+- #clock-cells: has to be one
+
+Optional properties:
+- clock-output-names: should be "cpu", "ddr", "ahb"
+
+Example:
+
+	memory-controller@...50000 {
+		compatible = "qca,ar9132-ppl", "qca,ar9130-pll";
+		reg = <0x18050000 0x20>;
+
+		clock-names = "ref";
+		clocks = <&extosc>;
+
+		#clock-cells = <1>;
+		clock-output-names = "cpu", "ddr", "ahb";
+	};
-- 
2.0.0

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