140 lines · yaml
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)2%YAML 1.23---4$id: http://devicetree.org/schemas/pinctrl/awinic,aw9523-pinctrl.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: Awinic AW9523/AW9523B I2C GPIO Expander8 9maintainers:10 - AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>11 12description: |13 The Awinic AW9523/AW9523B I2C GPIO Expander featuring 16 multi-function14 I/O, 256 steps PWM mode and interrupt support.15 16properties:17 compatible:18 const: awinic,aw9523-pinctrl19 20 reg:21 maxItems: 122 23 '#gpio-cells':24 description: |25 Specifying the pin number and flags, as defined in26 include/dt-bindings/gpio/gpio.h27 const: 228 29 gpio-controller: true30 31 gpio-ranges:32 maxItems: 133 34 interrupt-controller: true35 36 interrupts:37 maxItems: 138 description: Specifies the INTN pin IRQ.39 40 '#interrupt-cells':41 description:42 Specifies the PIN numbers and Flags, as defined in defined in43 include/dt-bindings/interrupt-controller/irq.h44 const: 245 46 reset-gpios:47 maxItems: 148 49# PIN CONFIGURATION NODES50patternProperties:51 '-pins$':52 type: object53 description:54 Pinctrl node's client devices use subnodes for desired pin configuration.55 Client device subnodes use below standard properties.56 $ref: /schemas/pinctrl/pincfg-node.yaml57 58 properties:59 pins:60 description:61 List of gpio pins affected by the properties specified in62 this subnode.63 items:64 pattern: "^gpio([0-9]|1[0-5])$"65 minItems: 166 maxItems: 1667 68 function:69 description:70 Specify the alternative function to be configured for the71 specified pins.72 73 enum: [ gpio, pwm ]74 75 bias-disable: true76 bias-pull-down: true77 bias-pull-up: true78 drive-open-drain: true79 drive-push-pull: true80 input-enable: true81 input-disable: true82 output-high: true83 output-low: true84 85 required:86 - pins87 - function88 89 additionalProperties: false90 91required:92 - compatible93 - reg94 - gpio-controller95 - '#gpio-cells'96 - gpio-ranges97 98additionalProperties: false99 100examples:101 # Example configuration to drive pins for a keyboard matrix102 - |103 #include <dt-bindings/gpio/gpio.h>104 #include <dt-bindings/interrupt-controller/irq.h>105 106 i2c {107 #address-cells = <1>;108 #size-cells = <0>;109 110 aw9523: gpio-expander@58 {111 compatible = "awinic,aw9523-pinctrl";112 reg = <0x58>;113 interrupt-parent = <&tlmm>;114 interrupts = <50 IRQ_TYPE_EDGE_FALLING>;115 gpio-controller;116 #gpio-cells = <2>;117 gpio-ranges = <&tlmm 0 0 16>;118 interrupt-controller;119 #interrupt-cells = <2>;120 reset-gpios = <&tlmm 51 GPIO_ACTIVE_HIGH>;121 122 keyboard-matrix-col-pins {123 pins = "gpio8", "gpio9", "gpio10", "gpio11",124 "gpio12", "gpio13", "gpio14", "gpio15";125 function = "gpio";126 input-disable;127 output-low;128 };129 130 keyboard-matrix-row-pins {131 pins = "gpio0", "gpio1", "gpio2", "gpio3",132 "gpio4", "gpio5", "gpio6", "gpio7";133 function = "gpio";134 bias-pull-up;135 drive-open-drain;136 input-enable;137 };138 };139 };140