Cirrus Logic CLPS711X GPIO controller
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Required properties:
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- compatible: Should be "cirrus,ep7209-gpio"
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- reg: Physical base GPIO controller registers location and length.
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There should be two registers, first is DATA register, the second
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is DIRECTION.
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- gpio-controller: Marks the device node as a gpio controller.
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- #gpio-cells: Should be two. The first cell is the pin number and
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the second cell is used to specify the gpio polarity:
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0 = active high
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1 = active low
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Note: Each GPIO port should have an alias correctly numbered in "aliases"
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node.
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Example:
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aliases {
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gpio0 = &porta;
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};
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porta: gpio@80000000 {
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compatible = "cirrus,ep7312-gpio","cirrus,ep7209-gpio";
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reg = <0x80000000 0x1>, <0x80000040 0x1>;
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gpio-controller;
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#gpio-cells = <2>;
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};
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