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Commit 88d88c5a authored by Paul Cercueil's avatar Paul Cercueil Committed by Alexandre Belloni
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Documentation: dt: Add binding info for jz4740-rtc driver 



This commit adds documentation for the device-tree bindings of the
jz4740-rtc driver, which supports the RTC unit present in the JZ4740 and
JZ4780 SoCs from Ingenic.

Signed-off-by: default avatarPaul Cercueil <paul@crapouillou.net>
Acked-by: default avatarMaarten ter Huurne <maarten@treewalker.org>
Acked-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@free-electrons.com>
parent cd563200

Documentation/devicetree/bindings/rtc/ingenic,jz4740-rtc.txt

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JZ4740 and similar SoCs real-time clock driver



Required properties:



- compatible: One of:

  - "ingenic,jz4740-rtc" - for use with the JZ4740 SoC

  - "ingenic,jz4780-rtc" - for use with the JZ4780 SoC

- reg: Address range of rtc register set

- interrupts: IRQ number for the alarm interrupt

- clocks: phandle to the "rtc" clock

- clock-names: must be "rtc"



Optional properties:

- system-power-controller: To use this component as the

  system power controller

- reset-pin-assert-time-ms: Reset pin low-level assertion

  time after wakeup (default 60ms; range 0-125ms if RTC clock

  at 32 kHz)

- min-wakeup-pin-assert-time-ms: Minimum wakeup pin assertion

  time (default 100ms; range 0-2s if RTC clock at 32 kHz)



Example:



rtc@10003000 {

	compatible = "ingenic,jz4740-rtc";

	reg = <0x10003000 0x40>;



	interrupt-parent = <&intc>;

	interrupts = <32>;



	clocks = <&rtc_clock>;

	clock-names = "rtc";



	system-power-controller;

	reset-pin-assert-time-ms = <60>;

	min-wakeup-pin-assert-time-ms = <100>;

};