Add bindings for the Awinic AW9523/AW9523B I2C GPIO Expander driver. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxxx> --- .../pinctrl/awinic,aw9523-pinctrl.yaml | 139 ++++++++++++++++++ 1 file changed, 139 insertions(+) create mode 100644 Documentation/devicetree/bindings/pinctrl/awinic,aw9523-pinctrl.yaml diff --git a/Documentation/devicetree/bindings/pinctrl/awinic,aw9523-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/awinic,aw9523-pinctrl.yaml new file mode 100644 index 000000000000..640d4d7e4cab --- /dev/null +++ b/Documentation/devicetree/bindings/pinctrl/awinic,aw9523-pinctrl.yaml @@ -0,0 +1,139 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pinctrl/awinic,aw9523-pinctrl.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Awinic AW9523/AW9523B I2C GPIO Expander + +maintainers: + - AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxxx> + +description: | + The Awinic AW9523/AW9523B I2C GPIO Expander featuring 16 multi-function + I/O, 256 steps PWM mode and interrupt support. + +properties: + compatible: + const: awinic,aw9523-pinctrl + + reg: + maxItems: 1 + + '#gpio-cells': + description: | + Specifying the pin number and flags, as defined in + include/dt-bindings/gpio/gpio.h + const: 2 + + gpio-controller: true + + gpio-ranges: + maxItems: 1 + + interrupt-controller: true + + interrupts: + maxItems: 1 + description: Specifies the INTN pin IRQ. + + '#interrupt-cells': + description: + Specifies the PIN numbers and Flags, as defined in defined in + include/dt-bindings/interrupt-controller/irq.h + const: 2 + + reset-gpios: + maxItems: 1 + +#PIN CONFIGURATION NODES +patternProperties: + '-pins$': + type: object + description: + Pinctrl node's client devices use subnodes for desired pin configuration. + Client device subnodes use below standard properties. + $ref: "/schemas/pinctrl/pincfg-node.yaml" + + properties: + pins: + description: + List of gpio pins affected by the properties specified in + this subnode. + items: + pattern: "^gpio([0-9]|1[0-5])$" + minItems: 1 + maxItems: 16 + + function: + description: + Specify the alternative function to be configured for the + specified pins. + + enum: [ gpio, pwm ] + + bias-disable: true + bias-pull-down: true + bias-pull-up: true + drive-open-drain: true + drive-push-pull: true + input-enable: true + input-disable: true + output-high: true + output-low: true + + required: + - pins + - function + + additionalProperties: false + +required: + - compatible + - reg + - gpio-controller + - '#gpio-cells' + - gpio-ranges + +additionalProperties: false + +examples: + # Example configuration to drive pins for a keyboard matrix + - | + #include <dt-bindings/gpio/gpio.h> + #include <dt-bindings/interrupt-controller/irq.h> + + i2c { + #address-cells = <1>; + #size-cells = <0>; + + aw9523: gpio-expander@58 { + compatible = "awinic,aw9523-pinctrl"; + reg = <0x58>; + interrupt-parent = <&tlmm>; + interrupts = <50 IRQ_TYPE_EDGE_FALLING>; + gpio-controller; + #gpio-cells = <2>; + gpio-ranges = <&tlmm 0 0 16>; + interrupt-controller; + #interrupt-cells = <2>; + reset-gpios = <&tlmm 51 GPIO_ACTIVE_HIGH>; + + keyboard-matrix-col-pins { + pins = "gpio8", "gpio9", "gpio10", "gpio11", + "gpio12", "gpio13", "gpio14", "gpio15"; + function = "gpio"; + input-disable; + output-low; + }; + + keyboard-matrix-row-pins { + pins = "gpio0", "gpio1", "gpio2", "gpio3", + "gpio4", "gpio5", "gpio6", "gpio7"; + function = "gpio"; + bias-pull-up; + drive-open-drain; + input-enable; + }; + }; + }; -- 2.30.0
