Lines Matching +full:current +full:- +full:limit +full:- +full:microamp
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
18 Many LED devices expose more than one current output that can be connected
25 led-sources:
27 List of device current outputs the LED is connected to. The outputs are
30 $ref: /schemas/types.yaml#/definitions/uint32-array
35 from the header include/dt-bindings/leds/common.h. If there is no
42 the header include/dt-bindings/leds/common.h. If there is no matching
48 function-enumerator:
59 deprecated - use 'function' and 'color' properties instead.
60 function-enumerator has no effect when this property is present.
62 default-state:
65 default-state property is set the to same value, then no glitch should be
67 will keep the LED at whatever its current state is, without producing a
71 - on
72 - off
73 - keep
76 linux,default-trigger:
83 - enum:
84 # LED will act as a back-light, controlled by the framebuffer system
85 - backlight
86 # LED will turn on (see also "default-state" property)
87 - default-on
89 - heartbeat
91 - disk-activity
93 - disk-read
95 - disk-write
97 - timer
99 # timer (requires "led-pattern" property)
100 - pattern
102 - audio-micmute
104 - audio-mute
106 - bluetooth-power
108 - flash
110 - kbd-capslock
112 - mtd
115 - nand-disk
118 - none
120 - torch
122 - usb-gadget
124 - usb-host
126 - usbport
128 - pattern: "^cpu[0-9]*$"
130 - pattern: "^hci[0-9]+-power$"
132 - pattern: "^mmc[0-9]+$"
134 - pattern: "^phy[0-9]+tx$"
136 led-pattern:
141 - one-shot : two numbers specifying delay on and delay off (in ms),
142 - timer : two numbers specifying delay on and delay off (in ms),
143 - pattern : the pattern is given by a series of tuples, of
146 Documentation/devicetree/bindings/leds/leds-trigger-pattern.txt
147 $ref: /schemas/types.yaml#/definitions/uint32-matrix
152 led-max-microamp:
154 Maximum LED supply current in microamperes. This property can be made
156 damage in case an excessive current is set.
157 For flash LED controllers with configurable current this property is
158 mandatory for the LEDs in the non-flash modes (e.g. torch or indicator).
160 max-brightness:
163 property is not required. This property is used to set a software limit.
167 Note that this flag is mainly used for PWM-LEDs, where it is not possible
168 to map brightness to current. Drivers for other controllers should use
169 led-max-microamp.
172 panic-indicator:
178 retain-state-shutdown:
184 trigger-sources:
200 #trigger-source-cells property in the source node.
201 $ref: /schemas/types.yaml#/definitions/phandle-array
204 flash-max-microamp:
206 Maximum flash LED supply current in microamperes. Required for flash LED
207 nodes with configurable current.
209 flash-max-timeout-us:
217 - |
218 #include <dt-bindings/gpio/gpio.h>
219 #include <dt-bindings/leds/common.h>
221 led-controller {
222 compatible = "gpio-leds";
224 led-0 {
226 linux,default-trigger = "heartbeat";
230 led-1 {
233 trigger-sources = <&ohci_port1>, <&ehci_port1>;
237 - |
238 #include <dt-bindings/leds/common.h>
240 led-controller {
241 compatible = "maxim,max77693-led";
246 led-sources = <0>, <1>;
247 led-max-microamp = <50000>;
248 flash-max-microamp = <320000>;
249 flash-max-timeout-us = <500000>;
253 - |
254 #include <dt-bindings/leds/common.h>
257 #address-cells = <1>;
258 #size-cells = <0>;
260 led-controller@30 {
263 #address-cells = <1>;
264 #size-cells = <0>;
268 linux,default-trigger = "heartbeat";
270 function-enumerator = <1>;
276 function-enumerator = <2>;
282 function-enumerator = <3>;