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 7title: Allwinner A100 LED Controller 8 9maintainers: 10 - Samuel Holland <samuel@sholland.org> 11 12description: 13 The LED controller found in Allwinner sunxi SoCs uses a one-wire serial 14 interface to drive up to 1024 RGB LEDs. 15 16properties: 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 88patternProperties: 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 102required: 103 - compatible 104 - reg 105 - interrupts 106 - clocks 107 - clock-names 108 - resets 109 110additionalProperties: false 111 112examples: 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... 138