forked from Minki/linux
50e8df09e4
Signed-off-by: Peter Rosin <peda@axentia.se> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
42 lines
1.1 KiB
Plaintext
42 lines
1.1 KiB
Plaintext
SEMTECH SX150x GPIO expander bindings
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Required properties:
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- compatible: should be "semtech,sx1506q",
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"semtech,sx1508q",
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"semtech,sx1509q",
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"semtech,sx1502q".
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- reg: The I2C slave address for this device.
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- interrupt-parent: phandle of the parent interrupt controller.
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- interrupts: Interrupt specifier for the controllers interrupt.
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- #gpio-cells: Should be 2. The first cell is the GPIO number and the
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second cell is used to specify optional parameters:
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bit 0: polarity (0: normal, 1: inverted)
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- gpio-controller: Marks the device as a GPIO controller.
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- interrupt-controller: Marks the device as a interrupt controller.
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The GPIO expander can optionally be used as an interrupt controller, in
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which case it uses the default two cell specifier as described in
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Documentation/devicetree/bindings/interrupt-controller/interrupts.txt.
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Example:
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i2c_gpio_expander@20{
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#gpio-cells = <2>;
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#interrupt-cells = <2>;
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compatible = "semtech,sx1506q";
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reg = <0x20>;
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interrupt-parent = <&gpio_1>;
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interrupts = <16 0>;
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gpio-controller;
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interrupt-controller;
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};
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