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author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
commit | 57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch) | |
tree | 5e910f0e82173f4ef4f51111366a3f1299037a7b /Documentation/devicetree/bindings/gpio/gpio-sx150x.txt |
Initial import
Diffstat (limited to 'Documentation/devicetree/bindings/gpio/gpio-sx150x.txt')
-rw-r--r-- | Documentation/devicetree/bindings/gpio/gpio-sx150x.txt | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/gpio/gpio-sx150x.txt b/Documentation/devicetree/bindings/gpio/gpio-sx150x.txt new file mode 100644 index 000000000..ba2bb84ee --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/gpio-sx150x.txt @@ -0,0 +1,40 @@ +SEMTECH SX150x GPIO expander bindings + + +Required properties: + +- compatible: should be "semtech,sx1506q", + "semtech,sx1508q", + "semtech,sx1509q". + +- 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; + }; |