xref: /freebsd/sys/contrib/device-tree/Bindings/leds/leds-sgm3140.yaml (revision af23369a6deaaeb612ab266eb88b8bb8d560c322) 
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
7title: SGMICRO SGM3140 500mA Buck/Boost Charge Pump LED Driver
8
9maintainers:
10  - Luca Weiss <luca@z3ntu.xyz>
11
12description: |
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
19properties:
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
38required:
39  - compatible
40  - flash-gpios
41  - enable-gpios
42
43additionalProperties: false
44
45examples:
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    };
62