leds-lp55xx.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/leds/leds-lp55xx.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: TI/National Semiconductor LP55xx and LP8501 LED Drivers
    8 
    9 maintainers:
   10   - Jacek Anaszewski <jacek.anaszewski@gmail.com>
   11   - Pavel Machek <pavel@ucw.cz>
   12 
   13 description: |
   14   Bindings for the TI/National Semiconductor LP55xx and LP8501 multi channel
   15   LED Drivers.
   16 
   17   For more product information please see the link below:
   18     https://www.ti.com/lit/gpn/lp5521
   19     https://www.ti.com/lit/gpn/lp5523
   20     https://www.ti.com/lit/gpn/lp55231
   21     https://www.ti.com/lit/gpn/lp5562
   22     https://www.ti.com/lit/gpn/lp8501
   23 
   24 properties:
   25   compatible:
   26     enum:
   27       - national,lp5521
   28       - national,lp5523
   29       - ti,lp55231
   30       - ti,lp5562
   31       - ti,lp8501
   32 
   33   reg:
   34     maxItems: 1
   35     description: I2C slave address
   36 
   37   clock-mode:
   38     $ref: /schemas/types.yaml#/definitions/uint8
   39     description: |
   40       Input clock mode
   41     enum:
   42       - 0 # automode
   43       - 1 # internal
   44       - 2 # external
   45 
   46   enable-gpio:
   47     maxItems: 1
   48     description: |
   49       GPIO attached to the chip's enable pin
   50 
   51   pwr-sel:
   52     $ref: /schemas/types.yaml#/definitions/uint8
   53     description: |
   54       LP8501 specific property. Power selection for output channels.
   55     enum:
   56       - 0 # D1~9 are connected to VDD
   57       - 1 # D1~6 with VDD, D7~9 with VOUT
   58       - 2 # D1~6 with VOUT, D7~9 with VDD
   59       - 3 # D1~9 are connected to VOUT
   60 
   61   '#address-cells':
   62     const: 1
   63 
   64   '#size-cells':
   65     const: 0
   66 
   67 patternProperties:
   68   "(^led@[0-9a-f]$|led)":
   69     type: object
   70     $ref: common.yaml#
   71     properties:
   72       led-cur:
   73         $ref: /schemas/types.yaml#/definitions/uint8
   74         description: |
   75           Current setting at each LED channel (mA x10, 0 if LED is not connected)
   76         minimum: 0
   77         maximum: 255
   78 
   79       max-cur:
   80         $ref: /schemas/types.yaml#/definitions/uint8
   81         description: Maximun current at each LED channel.
   82 
   83       reg:
   84         description: |
   85           Output channel for the LED.  This is zero based channel identifier and
   86           the data sheet is a one based channel identifier.
   87           reg value to output to LED output number
   88         enum:
   89           - 0 # LED output D1
   90           - 1 # LED output D2
   91           - 2 # LED output D3
   92           - 3 # LED output D4
   93           - 4 # LED output D5
   94           - 5 # LED output D6
   95           - 6 # LED output D7
   96           - 7 # LED output D8
   97           - 8 # LED output D9
   98 
   99       chan-name:
  100         $ref: /schemas/types.yaml#/definitions/string
  101         description: name of channel
  102 
  103 required:
  104   - compatible
  105   - reg
  106 
  107 additionalProperties: false
  108 
  109 examples:
  110   - |
  111     #include <dt-bindings/leds/common.h>
  112 
  113     i2c {
  114         #address-cells = <1>;
  115         #size-cells = <0>;
  116 
  117         led-controller@32 {
  118             #address-cells = <1>;
  119             #size-cells = <0>;
  120             compatible = "ti,lp8501";
  121             reg = <0x32>;
  122             clock-mode = /bits/ 8 <2>;
  123             pwr-sel = /bits/ 8 <3>;     /* D1~9 connected to VOUT */
  124 
  125             led@0 {
  126                 reg = <0>;
  127                 chan-name = "d1";
  128                 led-cur = /bits/ 8 <0x14>;
  129                 max-cur = /bits/ 8 <0x20>;
  130             };
  131 
  132             led@1 {
  133                 reg = <1>;
  134                 chan-name = "d2";
  135                 led-cur = /bits/ 8 <0x14>;
  136                 max-cur = /bits/ 8 <0x20>;
  137             };
  138 
  139             led@2 {
  140                 reg = <2>;
  141                 chan-name = "d3";
  142                 led-cur = /bits/ 8 <0x14>;
  143                 max-cur = /bits/ 8 <0x20>;
  144             };
  145 
  146             led@3 {
  147                 reg = <3>;
  148                 chan-name = "d4";
  149                 led-cur = /bits/ 8 <0x14>;
  150                 max-cur = /bits/ 8 <0x20>;
  151             };
  152 
  153             led@4 {
  154                 reg = <4>;
  155                 chan-name = "d5";
  156                 led-cur = /bits/ 8 <0x14>;
  157                 max-cur = /bits/ 8 <0x20>;
  158             };
  159 
  160             led@5 {
  161                 reg = <5>;
  162                 chan-name = "d6";
  163                 led-cur = /bits/ 8 <0x14>;
  164                 max-cur = /bits/ 8 <0x20>;
  165             };
  166 
  167             led@6 {
  168                 reg = <6>;
  169                 chan-name = "d7";
  170                 led-cur = /bits/ 8 <0x14>;
  171                 max-cur = /bits/ 8 <0x20>;
  172             };
  173 
  174             led@7 {
  175                 reg = <7>;
  176                 chan-name = "d8";
  177                 led-cur = /bits/ 8 <0x14>;
  178                 max-cur = /bits/ 8 <0x20>;
  179             };
  180 
  181             led@8 {
  182                 reg = <8>;
  183                 chan-name = "d9";
  184                 led-cur = /bits/ 8 <0x14>;
  185                 max-cur = /bits/ 8 <0x20>;
  186             };
  187         };
  188 
  189         led-controller@33 {
  190             #address-cells = <1>;
  191             #size-cells = <0>;
  192             compatible = "national,lp5523";
  193             reg = <0x33>;
  194             clock-mode = /bits/ 8 <0>;
  195 
  196             multi-led@2 {
  197                 #address-cells = <1>;
  198                 #size-cells = <0>;
  199                 reg = <0x2>;
  200                 color = <LED_COLOR_ID_RGB>;
  201                 function = LED_FUNCTION_STANDBY;
  202                 linux,default-trigger = "heartbeat";
  203 
  204                 led@0 {
  205                     led-cur = /bits/ 8 <50>;
  206                     max-cur = /bits/ 8 <100>;
  207                     reg = <0x0>;
  208                     color = <LED_COLOR_ID_GREEN>;
  209                 };
  210 
  211                 led@1 {
  212                     led-cur = /bits/ 8 <50>;
  213                     max-cur = /bits/ 8 <100>;
  214                     reg = <0x1>;
  215                     color = <LED_COLOR_ID_BLUE>;
  216                 };
  217 
  218                 led@6 {
  219                     led-cur = /bits/ 8 <50>;
  220                     max-cur = /bits/ 8 <100>;
  221                     reg = <0x6>;
  222                     color = <LED_COLOR_ID_RED>;
  223                 };
  224             };
  225         };
  226     };
  227 
  228 ...

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sys/contrib/device-tree/Bindings/leds/leds-lp55xx.yaml