| Tom Rini | 6bb92fc | 2024-05-20 09:54:58 -0600 | [diff] [blame] | 1 | # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/pinctrl/awinic,aw9523-pinctrl.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Awinic AW9523/AW9523B I2C GPIO Expander |
| 8 | |
| 9 | maintainers: |
| 10 | - AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org> |
| 11 | |
| 12 | description: | |
| 13 | The Awinic AW9523/AW9523B I2C GPIO Expander featuring 16 multi-function |
| 14 | I/O, 256 steps PWM mode and interrupt support. |
| 15 | |
| 16 | properties: |
| 17 | compatible: |
| 18 | const: awinic,aw9523-pinctrl |
| 19 | |
| 20 | reg: |
| 21 | maxItems: 1 |
| 22 | |
| 23 | '#gpio-cells': |
| 24 | description: | |
| 25 | Specifying the pin number and flags, as defined in |
| 26 | include/dt-bindings/gpio/gpio.h |
| 27 | const: 2 |
| 28 | |
| 29 | gpio-controller: true |
| 30 | |
| 31 | gpio-ranges: |
| 32 | maxItems: 1 |
| 33 | |
| 34 | interrupt-controller: true |
| 35 | |
| 36 | interrupts: |
| 37 | maxItems: 1 |
| 38 | description: Specifies the INTN pin IRQ. |
| 39 | |
| 40 | '#interrupt-cells': |
| 41 | description: |
| 42 | Specifies the PIN numbers and Flags, as defined in defined in |
| 43 | include/dt-bindings/interrupt-controller/irq.h |
| 44 | const: 2 |
| 45 | |
| 46 | reset-gpios: |
| 47 | maxItems: 1 |
| 48 | |
| 49 | # PIN CONFIGURATION NODES |
| 50 | patternProperties: |
| 51 | '-pins$': |
| 52 | type: object |
| 53 | description: |
| 54 | Pinctrl node's client devices use subnodes for desired pin configuration. |
| 55 | Client device subnodes use below standard properties. |
| 56 | $ref: /schemas/pinctrl/pincfg-node.yaml |
| 57 | |
| 58 | properties: |
| 59 | pins: |
| 60 | description: |
| 61 | List of gpio pins affected by the properties specified in |
| 62 | this subnode. |
| 63 | items: |
| 64 | pattern: "^gpio([0-9]|1[0-5])$" |
| 65 | minItems: 1 |
| 66 | maxItems: 16 |
| 67 | |
| 68 | function: |
| 69 | description: |
| 70 | Specify the alternative function to be configured for the |
| 71 | specified pins. |
| 72 | |
| 73 | enum: [ gpio, pwm ] |
| 74 | |
| 75 | bias-disable: true |
| 76 | bias-pull-down: true |
| 77 | bias-pull-up: true |
| 78 | drive-open-drain: true |
| 79 | drive-push-pull: true |
| 80 | input-enable: true |
| 81 | input-disable: true |
| 82 | output-high: true |
| 83 | output-low: true |
| 84 | |
| 85 | required: |
| 86 | - pins |
| 87 | - function |
| 88 | |
| 89 | additionalProperties: false |
| 90 | |
| 91 | required: |
| 92 | - compatible |
| 93 | - reg |
| 94 | - gpio-controller |
| 95 | - '#gpio-cells' |
| 96 | - gpio-ranges |
| 97 | |
| 98 | additionalProperties: false |
| 99 | |
| 100 | examples: |
| 101 | # Example configuration to drive pins for a keyboard matrix |
| 102 | - | |
| 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 | }; |