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dt-bindings: pinctrl: add external interrupt support to MT7622 pinctrl 

Extend the capability of MT7622 pinctrl with adding EINT so that each
GPIO can be used to notify CPU when a signal state is changing on the
line as an external interrupt.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Sean Wang 2018-05-21 01:01:47 +08:00 committed by Linus Walleij
parent c2b39deced
commit 6ee6fbde42
1 changed files with 10 additions and 0 deletions
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10
Documentation/devicetree/bindings/pinctrl/pinctrl-mt7622.txt
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@ -9,6 +9,16 @@ Required properties for the root node:
- #gpio-cells: Should be two. The first cell is the pin number and the
second is the GPIO flags.
Optional properties:
- interrupt-controller : Marks the device node as an interrupt controller
If the property interrupt-controller is defined, following property is required
- reg-names: A string describing the "reg" entries. Must contain "eint".
- interrupts : The interrupt output from the controller.
- #interrupt-cells: Should be two.
- interrupt-parent: Phandle of the interrupt parent to which the external
GPIO interrupts are forwarded to.
Please refer to pinctrl-bindings.txt in this directory for details of the
common pinctrl bindings used by client devices, including the meaning of the
phrase "pin configuration node".