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44 lines
1.3 KiB
44 lines
1.3 KiB
Elantech I2C Touchpad |
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Required properties: |
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- compatible: must be "elan,ekth3000". |
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- reg: I2C address of the chip. |
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- interrupts: interrupt to which the chip is connected (see interrupt |
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binding[0]). |
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Optional properties: |
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- wakeup-source: touchpad can be used as a wakeup source. |
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- pinctrl-names: should be "default" (see pinctrl binding [1]). |
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- pinctrl-0: a phandle pointing to the pin settings for the device (see |
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pinctrl binding [1]). |
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- vcc-supply: a phandle for the regulator supplying 3.3V power. |
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- elan,trackpoint: touchpad can support a trackpoint (boolean) |
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- elan,clickpad: touchpad is a clickpad (the entire surface is a button) |
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- elan,middle-button: touchpad has a physical middle button |
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- elan,x_traces: number of antennas on the x axis |
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- elan,y_traces: number of antennas on the y axis |
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- some generic touchscreen properties [2]: |
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* touchscreen-size-x |
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* touchscreen-size-y |
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* touchscreen-x-mm |
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* touchscreen-y-mm |
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[0]: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt |
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[1]: Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt |
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[2]: Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt |
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Example: |
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&i2c1 { |
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/* ... */ |
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touchpad@15 { |
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compatible = "elan,ekth3000"; |
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reg = <0x15>; |
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interrupt-parent = <&gpio4>; |
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interrupts = <0x0 IRQ_TYPE_EDGE_FALLING>; |
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wakeup-source; |
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}; |
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/* ... */ |
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};
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