allwinner,sun50i-a100-ledc.yaml

  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...