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Commit 571fc8e8 authored by Maxime Coquelin's avatar Maxime Coquelin Committed by Daniel Lezcano
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dt-bindings: Document the ARM System timer bindings 



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

Tested-by: default avatarChanwoo Choi <cw00.choi@samsung.com>
Acked-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarMaxime Coquelin <mcoquelin.stm32@gmail.com>
Signed-off-by: default avatarDaniel Lezcano <daniel.lezcano@linaro.org>
parent 5fc9b49d

Documentation/devicetree/bindings/arm/armv7m_systick.txt

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* 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@e000e010 {

	compatible = "arm,armv7m-systick";

	reg = <0xe000e010 0x10>;

	clocks = <&clk_systick>;

};



systick: timer@e000e010 {

	compatible = "arm,armv7m-systick";

	reg = <0xe000e010 0x10>;

	clock-frequency = <90000000>;

};