Lines Matching +full:usb +full:- +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 $ref: /schemas/types.yaml#/definitions/uint32-array
35 from the header include/dt-bindings/leds/common.h. If there is no
42 the header include/dt-bindings/leds/common.h. If there is no matching
48 function-enumerator:
59 deprecated - use 'function' and 'color' properties instead.
60 function-enumerator has no effect when this property is present.
62 default-state:
65 default-state property is set the to same value, then no glitch should be
67 will keep the LED at whatever its current state is, without producing a
71 - on
72 - off
73 - keep
76 linux,default-trigger:
83 - enum:
84 # LED will act as a back-light, controlled by the framebuffer system
85 - backlight
86 # LED will turn on (see also "default-state" property)
87 - default-on
89 - heartbeat
91 - disk-activity
93 - disk-read
95 - disk-write
97 - timer
99 # timer (requires "led-pattern" property)
100 - pattern
102 - audio-micmute
104 - audio-mute
106 - bluetooth-power
108 - flash
110 - kbd-capslock
112 - mtd
115 - nand-disk
118 - none
120 - torch
121 # LED indicates USB gadget activity
122 - usb-gadget
123 # LED indicates USB host activity
124 - usb-host
125 # LED indicates USB port state
126 - usbport
128 - pattern: "^cpu[0-9]*$"
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:
188 indicate its state. E.g. USB 2.0 LED may react to device(s) in a USB 2.0
194 In many cases LED can be related to more than one device (e.g. one USB LED
195 vs. multiple USB ports). Each source should be represented by a node in
198 #trigger-source-cells property in the source node.
199 $ref: /schemas/types.yaml#/definitions/phandle-array
202 flash-max-microamp:
204 Maximum flash LED supply current in microamperes. Required for flash LED
205 nodes with configurable current.
207 flash-max-timeout-us:
215 - |
216 #include <dt-bindings/gpio/gpio.h>
217 #include <dt-bindings/leds/common.h>
219 led-controller {
220 compatible = "gpio-leds";
222 led-0 {
224 linux,default-trigger = "heartbeat";
228 led-1 {
231 trigger-sources = <&ohci_port1>, <&ehci_port1>;
235 - |
236 #include <dt-bindings/leds/common.h>
238 led-controller {
239 compatible = "maxim,max77693-led";
244 led-sources = <0>, <1>;
245 led-max-microamp = <50000>;
246 flash-max-microamp = <320000>;
247 flash-max-timeout-us = <500000>;
251 - |
252 #include <dt-bindings/leds/common.h>
255 #address-cells = <1>;
256 #size-cells = <0>;
258 led-controller@30 {
261 #address-cells = <1>;
262 #size-cells = <0>;
266 linux,default-trigger = "heartbeat";
268 function-enumerator = <1>;
274 function-enumerator = <2>;
280 function-enumerator = <3>;