linux-kernel - [PATCH 2/2] dt-bindings: max77620: add documentation for MPOK property

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Date:   Wed, 16 Nov 2016 17:22:41 +0530
From:   Venkat Reddy Talla <vreddytalla@...dia.com>
To:     <lee.jones@...aro.org>, <lgirdwood@...il.com>,
        <broonie@...nel.org>, <robh+dt@...nel.org>, <mark.rutland@....com>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     <ldewangan@...dia.com>, <svelpula@...dia.com>,
        <vreddytalla@...dia.com>
Subject: [PATCH 2/2] dt-bindings: max77620: add documentation for MPOK property

Adding documentation for maxim,power-ok-control dts property

Signed-off-by: Venkat Reddy Talla <vreddytalla@...dia.com>
---
 Documentation/devicetree/bindings/mfd/max77620.txt | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Documentation/devicetree/bindings/mfd/max77620.txt b/Documentation/devicetree/bindings/mfd/max77620.txt
index 2ad44f7..9c16d51 100644
--- a/Documentation/devicetree/bindings/mfd/max77620.txt
+++ b/Documentation/devicetree/bindings/mfd/max77620.txt
@@ -106,6 +106,18 @@ Here supported time periods by device in microseconds are as follows:
 MAX77620 supports 40, 80, 160, 320, 640, 1280, 2560 and 5120 microseconds.
 MAX20024 supports 20, 40, 80, 160, 320, 640, 1280 and 2540 microseconds.
 
+-maxim,power-ok-control: configure map power ok bit
+			1: Enables POK(Power OK) to control nRST_IO and GPIO1
+			POK function.
+			0: Disables POK control.
+			if property missing, do not configure MPOK bit.
+			If POK mapping is enabled for GPIO1/nRST_IO then,
+			GPIO1/nRST_IO pins are HIGH only if all rails
+			that have POK control enabled are HIGH.
+			If any of the rails goes down(which are enabled for POK
+			control) then, GPIO1/nRST_IO goes LOW.
+			this property is valid for max20024 only.
+
 For DT binding details of different sub modules like GPIO, pincontrol,
 regulator, power, please refer respective device-tree binding document
 under their respective sub-system directories.
-- 
2.1.4