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Commit d6ed2b9b authored by Ezequiel Garcia's avatar Ezequiel Garcia Committed by Ralf Baechle
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Documentation: dt: Add Pistachio SoC general purpose timer binding document 



Add a device-tree binding document for the clocksource driver provided
by Pistachio SoC general purpose timers.

Signed-off-by: default avatarEzequiel Garcia <ezequiel.garcia@imgtec.com>
Reviewed-by: default avatarAndrew Bresticker <abrestic@chromium.org>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: devicetree@vger.kernel.org
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: James Hartley <James.Hartley@imgtec.com>
Cc: Govindraj Raja <Govindraj.Raja@imgtec.com>
Cc: Damien Horsley <Damien.Horsley@imgtec.com>
Cc: James Hogan <James.Hogan@imgtec.com>
Cc: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Patchwork: https://patchwork.linux-mips.org/patch/10783/


Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent fc6a6772

Documentation/devicetree/bindings/timer/img,pistachio-gptimer.txt

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* Pistachio general-purpose timer based clocksource



Required properties:

 - compatible: "img,pistachio-gptimer".

 - reg: Address range of the timer registers.

 - interrupts: An interrupt for each of the four timers

 - clocks: Should contain a clock specifier for each entry in clock-names

 - clock-names: Should contain the following entries:

                "sys", interface clock

                "slow", slow counter clock

                "fast", fast counter clock

 - img,cr-periph: Must contain a phandle to the peripheral control

		  syscon node.



Example:

	timer: timer@18102000 {

		compatible = "img,pistachio-gptimer";

		reg = <0x18102000 0x100>;

		interrupts = <GIC_SHARED 60 IRQ_TYPE_LEVEL_HIGH>,

			     <GIC_SHARED 61 IRQ_TYPE_LEVEL_HIGH>,

			     <GIC_SHARED 62 IRQ_TYPE_LEVEL_HIGH>,

			     <GIC_SHARED 63 IRQ_TYPE_LEVEL_HIGH>;

		clocks = <&clk_periph PERIPH_CLK_COUNTER_FAST>,

		         <&clk_periph PERIPH_CLK_COUNTER_SLOW>,

			 <&cr_periph SYS_CLK_TIMER>;

		clock-names = "fast", "slow", "sys";

		img,cr-periph = <&cr_periph>;

	};