xref: /linux/Documentation/devicetree/bindings/leds/leds-lp55xx.yaml (revision da1d9caf95def6f0320819cf941c9fd1069ba9e1) 
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
7title: TI/National Semiconductor LP55xx and LP8501 LED Drivers
8
9maintainers:
10  - Jacek Anaszewski <jacek.anaszewski@gmail.com>
11  - Pavel Machek <pavel@ucw.cz>
12
13description: |
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
24properties:
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    $ref: /schemas/types.yaml#/definitions/uint8
53    description: |
54      LP8501 specific property. Power selection for output channels.
55    enum:
56      - 0 # D1~9 are connected to VDD
57      - 1 # D1~6 with VDD, D7~9 with VOUT
58      - 2 # D1~6 with VOUT, D7~9 with VDD
59      - 3 # D1~9 are connected to VOUT
60
61  '#address-cells':
62    const: 1
63
64  '#size-cells':
65    const: 0
66
67patternProperties:
68  "(^led@[0-9a-f]$|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
103required:
104  - compatible
105  - reg
106
107additionalProperties: false
108
109examples:
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...
229