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Commit 6f7ea94a authored by Denis Osterland's avatar Denis Osterland Committed by Alexandre Belloni
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rtc: isl1219: add device tree documentation 



The devicetree documentation for the ISL1219 device tree
binding is added with a short example. It is not a trivial
device, because it supports two interrupt sources.

Signed-off-by: default avatarDenis Osterland <Denis.Osterland@diehl.com>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
parent cfa30622

Documentation/devicetree/bindings/rtc/isil,isl1219.txt

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Intersil ISL1219 I2C RTC/Alarm chip with event in



ISL1219 has additional pins EVIN and #EVDET for tamper detection.



Required properties supported by the device:



 - "compatible": must be "isil,isl1219"

 - "reg": I2C bus address of the device



Optional properties:



 - "interrupt-names": list which may contains "irq" and "evdet"

 - "interrupts": list of interrupts for "irq" and "evdet"

 - "isil,ev-evienb": if present EV.EVIENB bit is set to the specified

                     value for proper operation.





Example isl1219 node with #IRQ pin connected to SoC gpio1 pin12

 and #EVDET pin connected to SoC gpio2 pin 24:



	isl1219: rtc@68 {

		compatible = "isil,isl1219";

		reg = <0x68>;

		interrupt-names = "irq", "evdet";

		interrupts-extended = <&gpio1 12 IRQ_TYPE_EDGE_FALLING>,

			<&gpio2 24 IRQ_TYPE_EDGE_FALLING>;

		isil,ev-evienb = <1>;

	};