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authorPaul Cercueil <paul@crapouillou.net>2016-10-31 21:39:46 +0100
committerAlexandre Belloni <alexandre.belloni@free-electrons.com>2016-11-04 23:49:47 +0100
commit88d88c5a4ad6ee2bd07a2a820925ad68dddc21cd (patch)
tree3226c9d64f1aeef35aa0a5d4249a2e7c7958bb81 /Documentation/devicetree/bindings/rtc
parentcd563200c090de628eb71c7478f272eaedc6fa4d (diff)
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: Paul Cercueil <paul@crapouillou.net> Acked-by: Maarten ter Huurne <maarten@treewalker.org> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Diffstat (limited to 'Documentation/devicetree/bindings/rtc')
-rw-r--r--Documentation/devicetree/bindings/rtc/ingenic,jz4740-rtc.txt37
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diff --git a/Documentation/devicetree/bindings/rtc/ingenic,jz4740-rtc.txt b/Documentation/devicetree/bindings/rtc/ingenic,jz4740-rtc.txt
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+++ b/Documentation/devicetree/bindings/rtc/ingenic,jz4740-rtc.txt
@@ -0,0 +1,37 @@
+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>;
+};