| Tom Rini | 762f85b | 2024-07-20 11:15:10 -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/leds/nxp,pca963x.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: NXP PCA963x LED controllers |
| 8 | |
| 9 | maintainers: |
| 10 | - Laurent Pinchart <laurent.pinchart@ideasonboard.com> |
| 11 | |
| 12 | description: | |
| 13 | The NXP PCA963x are I2C-controlled LED drivers optimized for |
| 14 | Red/Green/Blue/Amber (RGBA) color mixing applications. Each LED is |
| 15 | individually controllable and has its own PWM controller. |
| 16 | |
| 17 | Datasheets are available at |
| 18 | |
| 19 | - https://www.nxp.com/docs/en/data-sheet/PCA9632.pdf |
| 20 | - https://www.nxp.com/docs/en/data-sheet/PCA9633.pdf |
| 21 | - https://www.nxp.com/docs/en/data-sheet/PCA9634.pdf |
| 22 | - https://www.nxp.com/docs/en/data-sheet/PCA9635.pdf |
| 23 | |
| 24 | properties: |
| 25 | compatible: |
| 26 | enum: |
| 27 | - nxp,pca9632 |
| 28 | - nxp,pca9633 |
| 29 | - nxp,pca9634 |
| 30 | - nxp,pca9635 |
| 31 | |
| 32 | reg: |
| 33 | maxItems: 1 |
| 34 | |
| 35 | "#address-cells": |
| 36 | const: 1 |
| 37 | |
| 38 | "#size-cells": |
| 39 | const: 0 |
| 40 | |
| 41 | nxp,hw-blink: |
| 42 | type: boolean |
| 43 | description: |
| 44 | Use hardware blinking instead of software blinking |
| 45 | |
| 46 | nxp,inverted-out: |
| 47 | type: boolean |
| 48 | description: |
| 49 | Invert the polarity of the generated PWM. |
| 50 | |
| 51 | nxp,period-scale: |
| 52 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 53 | description: |
| 54 | In some configurations, the chip blinks faster than expected. This |
| 55 | parameter provides a scaling ratio (fixed point, decimal divided by 1000) |
| 56 | to compensate, e.g. 1300=1.3x and 750=0.75x. |
| 57 | |
| 58 | nxp,totem-pole: |
| 59 | type: boolean |
| 60 | description: |
| 61 | Use totem pole (push-pull) instead of open-drain (pca9632 defaults to |
| 62 | open-drain, newer chips to totem pole). |
| 63 | |
| 64 | patternProperties: |
| 65 | "^led@[0-9a-f]+$": |
| 66 | type: object |
| 67 | $ref: common.yaml# |
| 68 | unevaluatedProperties: false |
| 69 | |
| 70 | properties: |
| 71 | reg: |
| 72 | minimum: 0 |
| 73 | |
| 74 | required: |
| 75 | - reg |
| 76 | |
| 77 | allOf: |
| 78 | - if: |
| 79 | properties: |
| 80 | compatible: |
| 81 | contains: |
| 82 | enum: |
| 83 | - nxp,pca9632 |
| 84 | - nxp,pca9633 |
| 85 | then: |
| 86 | patternProperties: |
| 87 | "^led@[0-9a-f]+$": |
| 88 | properties: |
| 89 | reg: |
| 90 | maximum: 3 |
| 91 | else: |
| 92 | patternProperties: |
| 93 | "^led@[0-9a-f]+$": |
| 94 | properties: |
| 95 | reg: |
| 96 | maximum: 7 |
| 97 | |
| 98 | additionalProperties: false |
| 99 | |
| 100 | examples: |
| 101 | - | |
| 102 | #include <dt-bindings/leds/common.h> |
| 103 | |
| 104 | i2c { |
| 105 | #address-cells = <1>; |
| 106 | #size-cells = <0>; |
| 107 | |
| 108 | led-controller@62 { |
| 109 | compatible = "nxp,pca9632"; |
| 110 | reg = <0x62>; |
| 111 | #address-cells = <1>; |
| 112 | #size-cells = <0>; |
| 113 | |
| 114 | led@0 { |
| 115 | reg = <0>; |
| 116 | color = <LED_COLOR_ID_RED>; |
| 117 | function = LED_FUNCTION_STATUS; |
| 118 | }; |
| 119 | |
| 120 | led@1 { |
| 121 | reg = <1>; |
| 122 | color = <LED_COLOR_ID_GREEN>; |
| 123 | function = LED_FUNCTION_STATUS; |
| 124 | }; |
| 125 | |
| 126 | led@2 { |
| 127 | reg = <2>; |
| 128 | color = <LED_COLOR_ID_BLUE>; |
| 129 | function = LED_FUNCTION_STATUS; |
| 130 | }; |
| 131 | |
| 132 | led@3 { |
| 133 | reg = <3>; |
| 134 | color = <LED_COLOR_ID_WHITE>; |
| 135 | function = LED_FUNCTION_STATUS; |
| 136 | }; |
| 137 | }; |
| 138 | }; |
| 139 | |
| 140 | ... |