| SEMTECH SX150x GPIO expander bindings |
| |
| |
| Required properties: |
| |
| - compatible: should be "semtech,sx1506q", |
| "semtech,sx1508q", |
| "semtech,sx1509q", |
| "semtech,sx1502q". |
| |
| - reg: The I2C slave address for this device. |
| |
| - interrupt-parent: phandle of the parent interrupt controller. |
| |
| - interrupts: Interrupt specifier for the controllers interrupt. |
| |
| - #gpio-cells: Should be 2. The first cell is the GPIO number and the |
| second cell is used to specify optional parameters: |
| bit 0: polarity (0: normal, 1: inverted) |
| |
| - gpio-controller: Marks the device as a GPIO controller. |
| |
| - interrupt-controller: Marks the device as a interrupt controller. |
| |
| The GPIO expander can optionally be used as an interrupt controller, in |
| which case it uses the default two cell specifier as described in |
| Documentation/devicetree/bindings/interrupt-controller/interrupts.txt. |
| |
| Example: |
| |
| i2c_gpio_expander@20{ |
| #gpio-cells = <2>; |
| #interrupt-cells = <2>; |
| compatible = "semtech,sx1506q"; |
| reg = <0x20>; |
| interrupt-parent = <&gpio_1>; |
| interrupts = <16 0>; |
| |
| gpio-controller; |
| interrupt-controller; |
| }; |
