| Cypress I2C Touchpad |
| |
| Required properties: |
| - compatible: must be "cypress,cyapa". |
| - reg: I2C address of the chip. |
| - interrupt-parent: a phandle for the interrupt controller (see interrupt |
| binding[0]). |
| - interrupts: interrupt to which the chip is connected (see interrupt |
| binding[0]). |
| |
| Optional properties: |
| - wakeup-source: touchpad can be used as a wakeup source. |
| - pinctrl-names: should be "default" (see pinctrl binding [1]). |
| - pinctrl-0: a phandle pointing to the pin settings for the device (see |
| pinctrl binding [1]). |
| - vcc-supply: a phandle for the regulator supplying 3.3V power. |
| |
| [0]: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt |
| [1]: Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt |
| |
| Example: |
| &i2c0 { |
| /* ... */ |
| |
| /* Cypress Gen3 touchpad */ |
| touchpad@67 { |
| compatible = "cypress,cyapa"; |
| reg = <0x67>; |
| interrupt-parent = <&gpio>; |
| interrupts = <2 IRQ_TYPE_EDGE_FALLING>; /* GPIO 2 */ |
| wakeup-source; |
| }; |
| |
| /* Cypress Gen5 and later touchpad */ |
| touchpad@24 { |
| compatible = "cypress,cyapa"; |
| reg = <0x24>; |
| interrupt-parent = <&gpio>; |
| interrupts = <2 IRQ_TYPE_EDGE_FALLING>; /* GPIO 2 */ |
| wakeup-source; |
| }; |
| |
| /* ... */ |
| }; |
