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dt-bindings: pinctrl: mcp23s08: add documentation for drive-open-drain

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This flag set the mcp23s08 device irq type to open drain active low.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Phil Reid <preid@electromag.com.au>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Phil Reid 2018-02-19 17:25:19 +08:00 committed by Linus Walleij
parent d9f50048dc
commit 39aba4714d
1 changed files with 2 additions and 0 deletions
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Documentation/devicetree/bindings/pinctrl/pinctrl-mcp23s08.txt
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@ -45,6 +45,8 @@ Optional properties:
- first cell is the pin number
- second cell is used to specify flags.
- interrupt-controller: Marks the device node as a interrupt controller.
- drive-open-drain: Sets the ODR flag in the IOCON register. This configures
the IRQ output as open drain active low.
Optional device specific properties:
- microchip,irq-mirror: Sets the mirror flag in the IOCON register. Devices