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Commit 7930eb91 authored by Rob Herring's avatar Rob Herring Committed by Greg Kroah-Hartman
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dt-bindings: pinctrl: add a 'pinctrl-use-default' property 



Pin setup may be optional in some cases such as the reset default works
or the pin setup is done by the bootloader. In these cases, it is optional
for the OS to support managing the pin controller and pin setup. In order
to support this scenario, add a property 'pinctrl-use-default' to indicate
that the pin configuration is optional.

Signed-off-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 25b4e70d

Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt

+6 −0
Original line number Diff line number Diff line
@@ -103,6 +103,12 @@ Optional properties: 
#pinctrl-cells:	Number of pin control cells in addition to the index within the

		pin controller device instance



pinctrl-use-default: Boolean. Indicates that the OS can use the boot default

		pin configuration. This allows using an OS that does not have a

		driver for the pin controller. This property can be set either

		globally for the pin controller or in child nodes for individual

		pin group control.



Pin controller devices should contain the pin configuration nodes that client

devices reference.