[PATCH 2/2] dt-bindings: max77620: add documentation for MPOK property
From: Venkat Reddy Talla
Date: Wed Nov 16 2016 - 06:53:20 EST
Adding documentation for maxim,power-ok-control dts property
Signed-off-by: Venkat Reddy Talla <vreddytalla@xxxxxxxxxx>
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
@@ -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.