Device-Tree bindings for GPIO attached mice
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This simply uses standard GPIO handles to define a simple mouse connected
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to 5-7 GPIO lines.
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Required properties:
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- compatible: must be "gpio-mouse"
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- scan-interval-ms: The scanning interval in milliseconds
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- up-gpios: GPIO line phandle to the line indicating "up"
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- down-gpios: GPIO line phandle to the line indicating "down"
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- left-gpios: GPIO line phandle to the line indicating "left"
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- right-gpios: GPIO line phandle to the line indicating "right"
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Optional properties:
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- button-left-gpios: GPIO line handle to the left mouse button
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- button-middle-gpios: GPIO line handle to the middle mouse button
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- button-right-gpios: GPIO line handle to the right mouse button
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Example:
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#include <dt-bindings/gpio/gpio.h>
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gpio-mouse {
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compatible = "gpio-mouse";
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scan-interval-ms = <50>;
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up-gpios = <&gpio0 0 GPIO_ACTIVE_LOW>;
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down-gpios = <&gpio0 1 GPIO_ACTIVE_LOW>;
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left-gpios = <&gpio0 2 GPIO_ACTIVE_LOW>;
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right-gpios = <&gpio0 3 GPIO_ACTIVE_LOW>;
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button-left-gpios = <&gpio0 4 GPIO_ACTIVE_LOW>;
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button-middle-gpios = <&gpio0 5 GPIO_ACTIVE_LOW>;
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button-right-gpios = <&gpio0 6 GPIO_ACTIVE_LOW>;
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};
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