| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [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/cypress,cy8c95x0.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Cypress CY8C95X0 I2C GPIO expander |
| 8 | |
| 9 | maintainers: |
| 10 | - Patrick Rudolph <patrick.rudolph@9elements.com> |
| 11 | |
| 12 | description: | |
| 13 | This supports the 20/40/60 pin Cypress CYC95x0 GPIO I2C expanders. |
| 14 | Pin function configuration is performed on a per-pin basis. |
| 15 | |
| 16 | properties: |
| 17 | compatible: |
| 18 | enum: |
| 19 | - cypress,cy8c9520 |
| 20 | - cypress,cy8c9540 |
| 21 | - cypress,cy8c9560 |
| 22 | |
| 23 | reg: |
| 24 | maxItems: 1 |
| 25 | |
| 26 | gpio-controller: true |
| 27 | |
| 28 | '#gpio-cells': |
| 29 | description: |
| 30 | The first cell is the GPIO number and the second cell specifies GPIO |
| 31 | flags, as defined in <dt-bindings/gpio/gpio.h>. |
| 32 | const: 2 |
| 33 | |
| 34 | interrupts: |
| 35 | maxItems: 1 |
| 36 | |
| 37 | interrupt-controller: true |
| 38 | |
| 39 | '#interrupt-cells': |
| 40 | const: 2 |
| 41 | |
| 42 | gpio-line-names: true |
| 43 | |
| 44 | gpio-ranges: |
| 45 | maxItems: 1 |
| 46 | |
| 47 | gpio-reserved-ranges: |
| 48 | maxItems: 1 |
| 49 | |
| 50 | vdd-supply: |
| 51 | description: |
| 52 | Optional power supply. |
| 53 | |
| 54 | reset-gpios: |
| 55 | description: GPIO connected to the XRES pin |
| 56 | maxItems: 1 |
| 57 | |
| 58 | patternProperties: |
| 59 | '-pins$': |
| 60 | type: object |
| 61 | description: |
| 62 | Pinctrl node's client devices use subnodes for desired pin configuration. |
| 63 | Client device subnodes use below standard properties. |
| 64 | $ref: pincfg-node.yaml# |
| 65 | |
| 66 | properties: |
| 67 | pins: |
| 68 | description: |
| 69 | List of gpio pins affected by the properties specified in this |
| 70 | subnode. |
| 71 | items: |
| 72 | pattern: '^gp([0-7][0-7])$' |
| 73 | minItems: 1 |
| 74 | maxItems: 60 |
| 75 | |
| 76 | function: |
| 77 | description: |
| 78 | Specify the alternative function to be configured for the specified |
| 79 | pins. |
| 80 | enum: [ gpio, pwm ] |
| 81 | |
| 82 | bias-pull-down: true |
| 83 | |
| 84 | bias-pull-up: true |
| 85 | |
| 86 | bias-disable: true |
| 87 | |
| 88 | output-high: true |
| 89 | |
| 90 | output-low: true |
| 91 | |
| 92 | drive-push-pull: true |
| 93 | |
| 94 | drive-open-drain: true |
| 95 | |
| 96 | drive-open-source: true |
| 97 | |
| 98 | required: |
| 99 | - pins |
| 100 | - function |
| 101 | |
| 102 | additionalProperties: false |
| 103 | |
| 104 | required: |
| 105 | - compatible |
| 106 | - reg |
| 107 | - interrupts |
| 108 | - interrupt-controller |
| 109 | - '#interrupt-cells' |
| 110 | - gpio-controller |
| 111 | - '#gpio-cells' |
| 112 | |
| 113 | additionalProperties: false |
| 114 | |
| 115 | allOf: |
| 116 | - $ref: pinctrl.yaml# |
| 117 | |
| 118 | examples: |
| 119 | - | |
| 120 | #include <dt-bindings/interrupt-controller/arm-gic.h> |
| 121 | #include <dt-bindings/interrupt-controller/irq.h> |
| 122 | |
| 123 | i2c { |
| 124 | #address-cells = <1>; |
| 125 | #size-cells = <0>; |
| 126 | |
| 127 | pinctrl@20 { |
| 128 | compatible = "cypress,cy8c9520"; |
| 129 | reg = <0x20>; |
| 130 | gpio-controller; |
| 131 | #gpio-cells = <2>; |
| 132 | #interrupt-cells = <2>; |
| 133 | interrupts = <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>; |
| 134 | interrupt-controller; |
| 135 | vdd-supply = <&p3v3>; |
| 136 | gpio-reserved-ranges = <5 1>; |
| 137 | }; |
| 138 | }; |