On Fri, Apr 3, 2015 at 12:01 PM, Maxime Coquelin
<mcoquelin.stm32@xxxxxxxxx> wrote:
> This adds documentation of device tree bindings for the
> ARM System timer.
>
> Tested-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
> Signed-off-by: Maxime Coquelin <mcoquelin.stm32@xxxxxxxxx>
Acked-by: Rob Herring <robh@xxxxxxxxxx>
> ---
> .../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@e000e010 {
> + compatible = "arm,armv7m-systick";
> + reg = <0xe000e010 0x10>;
> + clocks = <&clk_systick>;
> +};
> +
> +systick: timer@e000e010 {
> + compatible = "arm,armv7m-systick";
> + reg = <0xe000e010 0x10>;
> + clock-frequency = <90000000>;
> +};
> --
> 1.9.1
>
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