1 # SPDX-License-Identifier: (GPL-2.0-only OR BS
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/leds/richte
5 $schema: http://devicetree.org/meta-schemas/co
6
7 title: Richtek RT8515 1.5A dual channel LED dr
8
9 maintainers:
10 - Linus Walleij <linus.walleij@linaro.org>
11
12 description: |
13 The Richtek RT8515 is a dual channel (two mo
14 supports driving a white LED in flash or tor
15 current for each mode is defined in hardware
16 RFS and RTS.
17
18 properties:
19 compatible:
20 const: richtek,rt8515
21
22 enf-gpios:
23 maxItems: 1
24 description: A connection to the 'ENF' (en
25
26 ent-gpios:
27 maxItems: 1
28 description: A connection to the 'ENT' (en
29
30 richtek,rfs-ohms:
31 minimum: 7680
32 maximum: 367000
33 description: The resistance value of the R
34 resistors limits the maximum flash curre
35 for the property flash-max-microamp to w
36 defines the range of the dimmer setting
37 flash LED.
38
39 richtek,rts-ohms:
40 minimum: 7680
41 maximum: 367000
42 description: The resistance value of the R
43 resistors limits the maximum torch curre
44 for the property torch-max-microamp to w
45 defines the range of the dimmer setting
46 torch LED.
47
48 led:
49 type: object
50 $ref: common.yaml#
51 properties:
52 function: true
53 color: true
54 flash-max-timeout-us: true
55
56 flash-max-microamp:
57 maximum: 700000
58 description: The maximum current for f
59 is hardwired to the component using
60 ground. The maximum hardware current
61 according to the formula Imax = 5500
62 allowed resistance value is 7.86 kOh
63 maximum current of 700mA. By setting
64 the device tree, you can further res
65 current below the hardware limit. Th
66 to be defined as it defines the maxi
67
68 led-max-microamp:
69 maximum: 700000
70 description: The maximum current for t
71 is hardwired to the component using
72 ground. The maximum hardware current
73 according to the formula Imax = 5500
74 allowed resistance value is 7.86 kOh
75 maximum current of 700mA. By setting
76 the device tree, you can further res
77 current below the hardware limit. Th
78 to be defined as it defines the maxi
79
80 additionalProperties: false
81
82 required:
83 - compatible
84 - ent-gpios
85 - enf-gpios
86 - led
87
88 additionalProperties: false
89
90 examples:
91 - |
92 #include <dt-bindings/gpio/gpio.h>
93 #include <dt-bindings/leds/common.h>
94
95 led-controller {
96 compatible = "richtek,rt8515";
97 enf-gpios = <&gpio4 12 GPIO_ACTIVE_HIG
98 ent-gpios = <&gpio4 13 GPIO_ACTIVE_HIG
99 richtek,rfs-ohms = <16000>;
100 richtek,rts-ohms = <100000>;
101
102 led {
103 function = LED_FUNCTION_FLASH;
104 color = <LED_COLOR_ID_WHITE>;
105 flash-max-timeout-us = <250000>;
106 flash-max-microamp = <150000>;
107 led-max-microamp = <25000>;
108 };
109 };
110
111 ...
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