Lines Matching +full:led +full:- +full:1
1 # SPDX-License-Identifier: GPL-2.0-only
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Jacek Anaszewski <jacek.anaszewski@gmail.com>
11 - Pavel Machek <pavel@ucw.cz>
14 LED and flash LED devices provide the same basic functionality as current
15 regulators, but extended with LED and flash LED specific features like
18 Many LED devices expose more than one current output that can be connected
19 to one or more discrete LED component. Since the arrangement of connections
20 can influence the way of the LED device initialization, the LED components
21 have to be tightly coupled with the LED device binding. They are represented
22 by child nodes of the parent LED device binding.
25 led-sources:
27 List of device current outputs the LED is connected to. The outputs are
28 identified by the numbers that must be defined in the LED device binding
30 $ref: /schemas/types.yaml#/definitions/uint32-array
34 LED function. Use one of the LED_FUNCTION_* prefixed definitions
35 from the header include/dt-bindings/leds/common.h. If there is no
41 Color of the LED. Use one of the LED_COLOR_ID_* prefixed definitions from
42 the header include/dt-bindings/leds/common.h. If there is no matching
48 function-enumerator:
56 The label for this LED. If omitted, the label is taken from the node name
58 no other LED class device can be assigned the same label. This property is
59 deprecated - use 'function' and 'color' properties instead.
60 function-enumerator has no effect when this property is present.
62 default-state:
64 The initial state of the LED. If the LED is already on or off and the
65 default-state property is set the to same value, then no glitch should be
66 produced where the LED momentarily turns off (or on). The "keep" setting
67 will keep the LED at whatever its current state is, without producing a
71 - on
72 - off
73 - keep
76 linux,default-trigger:
79 the LED.
83 - enum:
84 # LED will act as a back-light, controlled by the framebuffer system
85 - backlight
86 # LED will turn on (but for leds-gpio see "default-state" property in
87 # Documentation/devicetree/bindings/leds/leds-gpio.yaml)
88 - default-on
89 # LED "double" flashes at a load average based rate
90 - heartbeat
91 # LED indicates disk activity
92 - disk-activity
93 # LED indicates IDE disk activity (deprecated), in new implementations
94 # use "disk-activity"
95 - ide-disk
96 # LED flashes at a fixed, configurable rate
97 - timer
98 # LED alters the brightness for the specified duration with one software
99 # timer (requires "led-pattern" property)
100 - pattern
101 # LED is triggered by SD/MMC activity
102 - pattern: "^mmc[0-9]+$"
104 led-pattern:
109 - one-shot : two numbers specifying delay on and delay off (in ms),
110 - timer : two numbers specifying delay on and delay off (in ms),
111 - pattern : the pattern is given by a series of tuples, of
114 Documentation/devicetree/bindings/leds/leds-trigger-pattern.txt
115 $ref: /schemas/types.yaml#/definitions/uint32-matrix
120 led-max-microamp:
122 Maximum LED supply current in microamperes. This property can be made
125 For flash LED controllers with configurable current this property is
126 mandatory for the LEDs in the non-flash modes (e.g. torch or indicator).
128 panic-indicator:
130 This property specifies that the LED should be used, if at all possible,
134 retain-state-shutdown:
136 This property specifies that the LED should not be turned off or changed
140 trigger-sources:
142 List of devices which should be used as a source triggering this LED
144 indicate its state. E.g. USB 2.0 LED may react to device(s) in a USB 2.0
147 each of them having its own LED assigned (assuming they are not
150 In many cases LED can be related to more than one device (e.g. one USB LED
154 #trigger-source-cells property in the source node.
155 $ref: /schemas/types.yaml#/definitions/phandle-array
157 # Required properties for flash LED child nodes:
158 flash-max-microamp:
160 Maximum flash LED supply current in microamperes. Required for flash LED
163 flash-max-timeout-us:
165 Maximum timeout in microseconds after which the flash LED is turned off.
166 Required for flash LED nodes with configurable timeout.
171 - |
172 #include <dt-bindings/gpio/gpio.h>
173 #include <dt-bindings/leds/common.h>
175 led-controller {
176 compatible = "gpio-leds";
178 led-0 {
180 linux,default-trigger = "heartbeat";
184 led-1 {
186 gpios = <&gpio0 1 GPIO_ACTIVE_HIGH>;
187 trigger-sources = <&ohci_port1>, <&ehci_port1>;
191 - |
192 #include <dt-bindings/leds/common.h>
194 led-controller {
195 compatible = "maxim,max77693-led";
197 led {
200 led-sources = <0>, <1>;
201 led-max-microamp = <50000>;
202 flash-max-microamp = <320000>;
203 flash-max-timeout-us = <500000>;
207 - |
208 #include <dt-bindings/leds/common.h>
211 #address-cells = <1>;
212 #size-cells = <0>;
214 led-controller@30 {
217 #address-cells = <1>;
218 #size-cells = <0>;
220 led@1 {
221 reg = <1>;
222 linux,default-trigger = "heartbeat";
224 function-enumerator = <1>;
227 led@2 {
230 function-enumerator = <2>;
233 led@3 {
236 function-enumerator = <3>;