linux-kernel - [PATCH 07/11] dt-bindings: Document the ARM System timer bindings

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Date:	Tue,  2 Jun 2015 14:31:52 +0200
From:	Daniel Lezcano <daniel.lezcano@...aro.org>
To:	tglx@...utronix.de, mingo@...nel.org
Cc:	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	Rob Herring <robh@...nel.org>,
	Chanwoo Choi <cw00.choi@...sung.com>,
	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>,
	devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND...),
	linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 07/11] dt-bindings: Document the ARM System timer bindings

From: Maxime Coquelin <mcoquelin.stm32@...il.com>

This adds documentation of device tree bindings for the
ARM System timer.

Tested-by: Chanwoo Choi <cw00.choi@...sung.com>
Acked-by: Rob Herring <robh@...nel.org>
Signed-off-by: Maxime Coquelin <mcoquelin.stm32@...il.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
---
 .../devicetree/bindings/arm/armv7m_systick.txt     | 26 ++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/armv7m_systick.txt

diff --git a/Documentation/devicetree/bindings/arm/armv7m_systick.txt b/Documentation/devicetree/bindings/arm/armv7m_systick.txt
new file mode 100644
index 0000000..7cf4a24
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/armv7m_systick.txt
@@ -0,0 +1,26 @@
+* ARMv7M System Timer
+
+ARMv7-M includes a system timer, known as SysTick. Current driver only
+implements the clocksource feature.
+
+Required properties:
+- compatible	  : Should be "arm,armv7m-systick"
+- reg		  : The address range of the timer
+
+Required clocking property, have to be one of:
+- clocks	  : The input clock of the timer
+- clock-frequency : The rate in HZ in input of the ARM SysTick
+
+Examples:
+
+systick: timer@...0e010 {
+	compatible = "arm,armv7m-systick";
+	reg = <0xe000e010 0x10>;
+	clocks = <&clk_systick>;
+};
+
+systick: timer@...0e010 {
+	compatible = "arm,armv7m-systick";
+	reg = <0xe000e010 0x10>;
+	clock-frequency = <90000000>;
+};
-- 
1.9.1

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