Documentation/devicetree/bindings/leds/awinic,aw200xx.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/awinic,aw200xx.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: AWINIC AW200XX LED
   8
   9 maintainers:
  10   - Martin Kurbanov <mmkurbanov@sberdevices.ru>
  11
  12 description: |
  13   It is a matrix LED driver programmed via an I2C interface. Devices have
  14   a set of individually controlled leds and support 3 pattern controllers
  15   for auto breathing or group dimming control. Supported devices:
  16     - AW20036 (3x12) 36 LEDs
  17     - AW20054 (6x9)  54 LEDs
  18     - AW20072 (6x12) 72 LEDs
  19     - AW20108 (9x12) 108 LEDs
  20
  21   For more product information please see the link below:
  22   aw20036 - https://www.awinic.com/en/productDetail/AW20036QNR#tech-docs
  23   aw20054 - https://www.awinic.com/en/productDetail/AW20054QNR#tech-docs
  24   aw20072 - https://www.awinic.com/en/productDetail/AW20072QNR#tech-docs
  25   aw20108 - https://www.awinic.com/en/productDetail/AW20108QNR#tech-docs
  26
  27 properties:
  28   compatible:
  29     enum:
  30       - awinic,aw20036
  31       - awinic,aw20054
  32       - awinic,aw20072
  33       - awinic,aw20108
  34
  35   reg:
  36     maxItems: 1
  37
  38   "#address-cells":
  39     const: 1
  40
  41   "#size-cells":
  42     const: 0
  43
  44   enable-gpios:
  45     maxItems: 1
  46
  47 patternProperties:
  48   "^led@[0-9a-f]+$":
  49     type: object
  50     $ref: common.yaml#
  51     unevaluatedProperties: false
  52
  53     properties:
  54       reg:
  55         description:
  56           LED number
  57         maxItems: 1
  58
  59       led-max-microamp:
  60         default: 9780
  61         description: |
  62           Note that a driver will take the minimum of all LED limits
  63           since the chip has a single global setting.
  64           The maximum output current of each LED is calculated by the
  65           following formula:
  66             IMAXled = 160000 * (592 / 600.5) * (1 / max-current-switch-number)
  67           And the minimum output current formula:
  68             IMINled = 3300 * (592 / 600.5) * (1 / max-current-switch-number)
  69           where max-current-switch-number is determinated by led configuration
  70           and depends on how leds are physically connected to the led driver.
  71
  72 allOf:
  73   - if:
  74       properties:
  75         compatible:
  76           contains:
  77             const: awinic,aw20036
  78     then:
  79       patternProperties:
  80         "^led@[0-9a-f]+$":
  81           properties:
  82             reg:
  83               items:
  84                 minimum: 0
  85                 maximum: 36
  86
  87   - if:
  88       properties:
  89         compatible:
  90           contains:
  91             const: awinic,aw20054
  92     then:
  93       patternProperties:
  94         "^led@[0-9a-f]+$":
  95           properties:
  96             reg:
  97               items:
  98                 minimum: 0
  99                 maximum: 54
 100
 101   - if:
 102       properties:
 103         compatible:
 104           contains:
 105             const: awinic,aw20072
 106     then:
 107       patternProperties:
 108         "^led@[0-9a-f]+$":
 109           properties:
 110             reg:
 111               items:
 112                 minimum: 0
 113                 maximum: 72
 114
 115   - if:
 116       properties:
 117         compatible:
 118           contains:
 119             const: awinic,aw20108
 120     then:
 121       patternProperties:
 122         "^led@[0-9a-f]+$":
 123           properties:
 124             reg:
 125               items:
 126                 minimum: 0
 127                 maximum: 108
 128
 129 required:
 130   - compatible
 131   - reg
 132   - "#address-cells"
 133   - "#size-cells"
 134
 135 additionalProperties: false
 136
 137 examples:
 138   - |
 139     #include <dt-bindings/gpio/gpio.h>
 140     #include <dt-bindings/leds/common.h>
 141
 142     i2c {
 143         #address-cells = <1>;
 144         #size-cells = <0>;
 145
 146         led-controller@3a {
 147             compatible = "awinic,aw20036";
 148             reg = <0x3a>;
 149             #address-cells = <1>;
 150             #size-cells = <0>;
 151             enable-gpios = <&gpio 3 GPIO_ACTIVE_HIGH>;
 152
 153             led@0 {
 154                 reg = <0x0>;
 155                 color = <LED_COLOR_ID_RED>;
 156                 led-max-microamp = <9780>;
 157             };
 158
 159             led@1 {
 160                 reg = <0x1>;
 161                 color = <LED_COLOR_ID_GREEN>;
 162                 led-max-microamp = <9780>;
 163             };
 164
 165             led@2 {
 166                 reg = <0x2>;
 167                 color = <LED_COLOR_ID_BLUE>;
 168                 led-max-microamp = <9780>;
 169             };
 170         };
 171     };
 172
 173 ...