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Commit 5de5b2d5 authored Mar 12, 2014 by Josh Cartwright Committed by Lee Jones Mar 31, 2014

mfd: devicetree: bindings: Add pm8xxx RTC description



The PM8xxx family of PMICs contain an RTC.  This RTC is described as a
subnode of the PM8xxx.  Document these bindings, and replace the pwrkey
node in the example with the RTC, which is now described in this
document.

While we're here, add a short description to the device tree bindings
describing what the the PM8xxx devices are and how they are expected to
be used.

Signed-off-by: Josh Cartwright <joshc@codeaurora.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

parent 204747c9

Documentation/devicetree/bindings/mfd/qcom,pm8xxx.txt

+39 −6

Original line number	Diff line number	Diff line
		Qualcomm PM8xxx PMIC multi-function devices

		PROPERTIES
		The PM8xxx family of Power Management ICs are used to provide regulated
		voltages and other various functionality to Qualcomm SoCs.

		= PROPERTIES

		- compatible:
		Usage: required
		@@ -45,7 +48,37 @@ PROPERTIES
		Value type: <empty>
		Definition: identifies this node as an interrupt controller

		EXAMPLE
		= SUBCOMPONENTS

		The PMIC contains multiple independent functions, each described in a subnode.
		The below bindings specify the set of valid subnodes.

		== Real-Time Clock

		- compatible:
		Usage: required
		Value type: <string>
		Definition: must be one of:
		"qcom,pm8058-rtc"
		"qcom,pm8921-rtc"

		- reg:
		Usage: required
		Value type: <prop-encoded-array>
		Definition: single entry specifying the base address of the RTC registers

		- interrupts:
		Usage: required
		Value type: <prop-encoded-array>
		Definition: single entry specifying the RTC's alarm interrupt

		- allow-set-time:
		Usage: optional
		Value type: <empty>
		Definition: indicates that the setting of RTC time is allowed by
		the host CPU

		= EXAMPLE

		pmicintc: pmic@0 {
		compatible = "qcom,pm8921";
		@@ -55,9 +88,9 @@ EXAMPLE
		#address-cells = <1>;
		#size-cells = <0>;

		pwrkey {
		compatible = "qcom,pm8921-pwrkey";
		interrupt-parent = <&pmicintc>;
		interrupts = <50 1>, <51 1>;
		rtc@11d {
		compatible = "qcom,pm8921-rtc";
		reg = <0x11d>;
		interrupts = <0x27 0>;
		};
		};