| Tom Rini | 93743d2 | 2024-04-01 09:08:13 -0400 | [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/allwinner,sun50i-a100-ledc.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Allwinner A100 LED Controller |
| 8 | |
| 9 | maintainers: |
| 10 | - Samuel Holland <samuel@sholland.org> |
| 11 | |
| 12 | description: |
| 13 | The LED controller found in Allwinner sunxi SoCs uses a one-wire serial |
| 14 | interface to drive up to 1024 RGB LEDs. |
| 15 | |
| 16 | properties: |
| 17 | compatible: |
| 18 | oneOf: |
| 19 | - const: allwinner,sun50i-a100-ledc |
| 20 | - items: |
| 21 | - enum: |
| 22 | - allwinner,sun20i-d1-ledc |
| 23 | - allwinner,sun50i-r329-ledc |
| 24 | - const: allwinner,sun50i-a100-ledc |
| 25 | |
| 26 | reg: |
| 27 | maxItems: 1 |
| 28 | |
| 29 | "#address-cells": |
| 30 | const: 1 |
| 31 | |
| 32 | "#size-cells": |
| 33 | const: 0 |
| 34 | |
| 35 | interrupts: |
| 36 | maxItems: 1 |
| 37 | |
| 38 | clocks: |
| 39 | items: |
| 40 | - description: Bus clock |
| 41 | - description: Module clock |
| 42 | |
| 43 | clock-names: |
| 44 | items: |
| 45 | - const: bus |
| 46 | - const: mod |
| 47 | |
| 48 | resets: |
| 49 | maxItems: 1 |
| 50 | |
| 51 | dmas: |
| 52 | maxItems: 1 |
| 53 | description: TX DMA channel |
| 54 | |
| 55 | dma-names: |
| 56 | const: tx |
| 57 | |
| 58 | allwinner,pixel-format: |
| 59 | description: Pixel format (subpixel transmission order), default is "grb" |
| 60 | enum: |
| 61 | - bgr |
| 62 | - brg |
| 63 | - gbr |
| 64 | - grb |
| 65 | - rbg |
| 66 | - rgb |
| 67 | |
| 68 | allwinner,t0h-ns: |
| 69 | default: 336 |
| 70 | description: Length of high pulse when transmitting a "0" bit |
| 71 | |
| 72 | allwinner,t0l-ns: |
| 73 | default: 840 |
| 74 | description: Length of low pulse when transmitting a "0" bit |
| 75 | |
| 76 | allwinner,t1h-ns: |
| 77 | default: 882 |
| 78 | description: Length of high pulse when transmitting a "1" bit |
| 79 | |
| 80 | allwinner,t1l-ns: |
| 81 | default: 294 |
| 82 | description: Length of low pulse when transmitting a "1" bit |
| 83 | |
| 84 | allwinner,treset-ns: |
| 85 | default: 300000 |
| 86 | description: Minimum delay between transmission frames |
| 87 | |
| 88 | patternProperties: |
| 89 | "^multi-led@[0-9a-f]+$": |
| 90 | type: object |
| 91 | $ref: leds-class-multicolor.yaml# |
| 92 | unevaluatedProperties: false |
| 93 | properties: |
| 94 | reg: |
| 95 | minimum: 0 |
| 96 | maximum: 1023 |
| 97 | description: Index of the LED in the series (must be contiguous) |
| 98 | |
| 99 | required: |
| 100 | - reg |
| 101 | |
| 102 | required: |
| 103 | - compatible |
| 104 | - reg |
| 105 | - interrupts |
| 106 | - clocks |
| 107 | - clock-names |
| 108 | - resets |
| 109 | |
| 110 | additionalProperties: false |
| 111 | |
| 112 | examples: |
| 113 | - | |
| 114 | #include <dt-bindings/interrupt-controller/irq.h> |
| 115 | #include <dt-bindings/leds/common.h> |
| 116 | |
| 117 | ledc: led-controller@2008000 { |
| 118 | compatible = "allwinner,sun20i-d1-ledc", |
| 119 | "allwinner,sun50i-a100-ledc"; |
| 120 | reg = <0x2008000 0x400>; |
| 121 | interrupts = <36 IRQ_TYPE_LEVEL_HIGH>; |
| 122 | clocks = <&ccu 12>, <&ccu 34>; |
| 123 | clock-names = "bus", "mod"; |
| 124 | resets = <&ccu 12>; |
| 125 | dmas = <&dma 42>; |
| 126 | dma-names = "tx"; |
| 127 | #address-cells = <1>; |
| 128 | #size-cells = <0>; |
| 129 | |
| 130 | multi-led@0 { |
| 131 | reg = <0x0>; |
| 132 | color = <LED_COLOR_ID_RGB>; |
| 133 | function = LED_FUNCTION_INDICATOR; |
| 134 | }; |
| 135 | }; |
| 136 | |
| 137 | ... |