Documentation/devicetree/bindings/leds/leds-sgm3140.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/leds-sgm3140.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: SGMICRO SGM3140 500mA Buck/Boost Charge Pump LED Driver
   8
   9 maintainers:
  10   - Luca Weiss <luca@z3ntu.xyz>
  11
  12 description: |
  13   The SGM3140 is a current-regulated charge pump which can regulate two current
  14   levels for Flash and Torch modes.
  15
  16   The data sheet can be found at:
  17     http://www.sg-micro.com/uploads/soft/20190626/1561535688.pdf
  18
  19 properties:
  20   compatible:
  21     const: sgmicro,sgm3140
  22
  23   enable-gpios:
  24     maxItems: 1
  25     description: A connection to the 'EN' pin.
  26
  27   flash-gpios:
  28     maxItems: 1
  29     description: A connection to the 'FLASH' pin.
  30
  31   vin-supply:
  32     description: Regulator providing power to the 'VIN' pin.
  33
  34   led:
  35     type: object
  36     $ref: common.yaml#
  37
  38 required:
  39   - compatible
  40   - flash-gpios
  41   - enable-gpios
  42
  43 additionalProperties: false
  44
  45 examples:
  46   - |
  47     #include <dt-bindings/gpio/gpio.h>
  48     #include <dt-bindings/leds/common.h>
  49
  50     led-controller {
  51         compatible = "sgmicro,sgm3140";
  52         flash-gpios = <&pio 3 24 GPIO_ACTIVE_HIGH>; /* PD24 */
  53         enable-gpios = <&pio 2 3 GPIO_ACTIVE_HIGH>; /* PC3 */
  54         vin-supply = <&reg_dcdc1>;
  55
  56         sgm3140_flash: led {
  57             function = LED_FUNCTION_FLASH;
  58             color = <LED_COLOR_ID_WHITE>;
  59             flash-max-timeout-us = <250000>;
  60         };
  61     };