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regulator: max77620: add documentation for MPOK property 

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

Signed-off-by: Venkat Reddy Talla <vreddytalla@nvidia.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Venkat Reddy Talla 2016-11-17 23:24:36 +05:30 committed by Mark Brown
parent 383d0fca70
commit 983779235a
1 changed files with 12 additions and 0 deletions
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12
Documentation/devicetree/bindings/mfd/max77620.txt
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@ -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.