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/Documentation/leds/
Dindex.rst4 LEDs title
10 leds-class
11 leds-class-flash
12 leds-class-multicolor
19 leds-blinkm
20 leds-cht-wcove
21 leds-el15203000
22 leds-lm3556
23 leds-lp3944
24 leds-lp5521
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Dleds-lm3556.rst26 LM3556 Flash can be controlled through /sys/class/leds/flash/brightness file
35 #echo 0 > /sys/class/leds/flash/brightness
39 #echo 1 > /sys/class/leds/flash/brightness
45 #echo 16 > /sys/class/leds/flash/brightness
54 LM3556 torch can be controlled through /sys/class/leds/torch/brightness file.
62 #echo 0 > /sys/class/leds/torch/brightness
66 #echo 1 > /sys/class/leds/torch/brightness
72 #echo 8 > /sys/class/leds/torch/brightness
77 Indicator pattern can be set through /sys/class/leds/indicator/pattern file,
90 #echo 0 > /sys/class/leds/indicator/pattern
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Dwell-known-leds.txt5 directories in /sys/class/leds. It would be nice if userland would
17 Notice there's a list of functions in include/dt-bindings/leds/common.h .
21 Game controllers may feature LEDs to indicate a player number. This is commonly
23 The "player LEDs" are then programmed with a pattern to indicate a particular
24 player. For example, a game controller with 4 LEDs, may be programmed with "x---"
26 Input drivers can utilize the LED class to expose the individual player LEDs
40 Set of common keyboard LEDs, going back to PC AT or so.
57 LEDs on notebook body, indicating that sound input / output is muted.
69 Good: "platform:*:charging" (allwinner sun50i, leds-cht-wcove)
83 * Ethernet LEDs
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Dleds-class.rst5 In its simplest form, the LED class just allows control of LEDs from
6 userspace. LEDs appear in /sys/class/leds/. The maximum brightness of the
8 of the LED (taking a value 0-max_brightness). Most LEDs don't have hardware
18 Complex triggers while available to all LEDs have LED specific
22 be specified via /sys/class/leds/<device>/delay_{on,off} in milliseconds.
28 is chosen (via /sys/class/leds/<device>/trigger). Trigger specific
29 parameters can appear in /sys/class/leds/<device> once a given trigger is
36 The underlying design philosophy is simplicity. LEDs are simple devices
53 retrieved using get_led_device_info.sh script from tools/leds; generally
54 this section is expected mostly for LEDs that are somehow associated with
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/Documentation/ABI/testing/
Dsysfs-driver-hid-srws11 What: /sys/class/leds/SRWS1::<serial>::RPM1
2 What: /sys/class/leds/SRWS1::<serial>::RPM2
3 What: /sys/class/leds/SRWS1::<serial>::RPM3
4 What: /sys/class/leds/SRWS1::<serial>::RPM4
5 What: /sys/class/leds/SRWS1::<serial>::RPM5
6 What: /sys/class/leds/SRWS1::<serial>::RPM6
7 What: /sys/class/leds/SRWS1::<serial>::RPM7
8 What: /sys/class/leds/SRWS1::<serial>::RPM8
9 What: /sys/class/leds/SRWS1::<serial>::RPM9
10 What: /sys/class/leds/SRWS1::<serial>::RPM10
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Dsysfs-class-led-trigger-netdev1 What: /sys/class/leds/<led>/device_name
4 Contact: linux-leds@vger.kernel.org
8 What: /sys/class/leds/<led>/interval
11 Contact: linux-leds@vger.kernel.org
21 What: /sys/class/leds/<led>/link
24 Contact: linux-leds@vger.kernel.org
35 What: /sys/class/leds/<led>/tx
38 Contact: linux-leds@vger.kernel.org
50 What: /sys/class/leds/<led>/rx
53 Contact: linux-leds@vger.kernel.org
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Dsysfs-class-led1 What: /sys/class/leds/<led>/brightness
8 Most LEDs don't have hardware brightness support, so will
13 For multicolor LEDs, writing to this file will update all
14 LEDs within the group to a calculated percentage of what
23 Documentation/leds/leds-class-multicolor.rst.
26 /sys/class/leds/<led>/max_brightness.
35 What: /sys/class/leds/<led>/max_brightness
45 What: /sys/class/leds/<led>/brightness_hw_changed
49 Last hardware set brightness level for this LED. Some LEDs
50 may be changed autonomously by hardware/firmware. Only LEDs
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Dsysfs-class-led-multicolor2 What: /sys/class/leds/<led>/multi_index
12 Documentation/leds/leds-class-multicolor.rst.
14 What: /sys/class/leds/<led>/multi_intensity
21 not exceed /sys/class/leds/<led>/max_brightness.
24 Documentation/leds/leds-class-multicolor.rst.
Dsysfs-class-led-trigger-oneshot1 What: /sys/class/leds/<led>/delay_on
4 Contact: linux-leds@vger.kernel.org
10 What: /sys/class/leds/<led>/delay_off
13 Contact: linux-leds@vger.kernel.org
19 What: /sys/class/leds/<led>/invert
22 Contact: linux-leds@vger.kernel.org
30 What: /sys/class/leds/<led>/shot
33 Contact: linux-leds@vger.kernel.org
Dsysfs-class-led-trigger-pattern1 What: /sys/class/leds/<led>/pattern
13 Documentation/devicetree/bindings/leds/leds-trigger-pattern.txt
15 What: /sys/class/leds/<led>/hr_pattern
22 Unlike the /sys/class/leds/<led>/pattern, this attribute runs
25 What: /sys/class/leds/<led>/hw_pattern
37 file at Documentation/leds/.
39 What: /sys/class/leds/<led>/repeat
49 It should be noticed that some leds, like EL15203000 may
Dsysfs-class-leds-gt683r1 What: /sys/class/leds/<led>/gt683r/mode
6 Set the mode of LEDs. You should notice that changing the mode
16 Normal: LEDs are fully on when enabled
17 Audio: LEDs brightness depends on sound level
18 Breathing: LEDs brightness varies at human breathing rate
Dsysfs-class-led-trigger-tty1 What: /sys/class/leds/<tty_led>/ttyname
4 Contact: linux-leds@vger.kernel.org
8 What: /sys/class/leds/<tty_led>/rx
16 What: /sys/class/leds/<tty_led>/tx
24 What: /sys/class/leds/<tty_led>/cts
34 What: /sys/class/leds/<tty_led>/dsr
44 What: /sys/class/leds/<tty_led>/dcd
54 What: /sys/class/leds/<tty_led>/rng
/Documentation/devicetree/bindings/leds/
Dleds-bcm63138.yaml4 $id: http://devicetree.org/schemas/leds/leds-bcm63138.yaml#
7 title: Broadcom's BCM63138 LEDs controller
13 This LEDs controller was first used on BCM63138 and later reused on BCM4908,
16 It supports up to 32 LEDs that can be connected parallelly or serially. It
19 Binding serially connected LEDs isn't documented yet.
26 - brcm,bcm4908-leds
27 - brcm,bcm6848-leds
28 - brcm,bcm6858-leds
29 - brcm,bcm63148-leds
30 - brcm,bcm63381-leds
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Dleds-group-multicolor.yaml4 $id: http://devicetree.org/schemas/leds/leds-group-multicolor.yaml#
7 title: Multi-color LED built with monochromatic LEDs
13 This driver combines several monochromatic LEDs into one multi-color
18 const: leds-group-multicolor
20 leds:
22 An aray of monochromatic leds
26 - leds
29 - $ref: leds-class-multicolor.yaml#
36 #include <dt-bindings/leds/common.h>
38 monochromatic-leds {
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Dcznic,turris-omnia-leds.yaml4 $id: http://devicetree.org/schemas/leds/cznic,turris-omnia-leds.yaml#
7 title: CZ.NIC's Turris Omnia LEDs driver
13 This module adds support for the RGB LEDs found on the front panel of the
14 Turris Omnia router. There are 12 RGB LEDs that are controlled by a
20 const: cznic,turris-omnia-leds
35 $ref: leds-class-multicolor.yaml#
41 supports RGB LEDs.
48 This property identifies one of the LEDs on the front panel of the
59 #include <dt-bindings/leds/common.h>
66 compatible = "cznic,turris-omnia-leds";
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Dleds-bcm6328.yaml4 $id: http://devicetree.org/schemas/leds/leds-bcm6328.yaml#
7 title: LEDs connected to Broadcom BCM6328 controller
14 In these SoCs it's possible to control LEDs both as GPIOs or by hardware.
15 However, on some devices there are Serial LEDs (LEDs connected to a 74x164
20 Some of these Serial LEDs are hardware controlled (e.g. ethernet LEDs) and
21 exporting the 74x164 as spi-gpio prevents those LEDs to be hardware
28 registers you have some limited control over rerouting the LEDs (as
32 reason, hardware controlled LEDs aren't registered as LED class devices.
34 Each LED is represented as a sub-node of the brcm,bcm6328-leds device.
38 const: brcm,bcm6328-leds
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Dleds-gpio.yaml4 $id: http://devicetree.org/schemas/leds/leds-gpio.yaml#
7 title: LEDs connected to GPIO lines
14 Each LED is represented as a sub-node of the gpio-leds device. Each
19 const: gpio-leds
53 #include <dt-bindings/leds/common.h>
55 leds {
56 compatible = "gpio-leds";
72 compatible = "gpio-leds";
Dleds-pwm-multicolor.yaml4 $id: http://devicetree.org/schemas/leds/leds-pwm-multicolor.yaml#
7 title: Multi-color LEDs connected to PWM
13 This driver combines several monochrome PWM LEDs into one multi-color
18 const: pwm-leds-multicolor
22 $ref: leds-class-multicolor.yaml#
59 #include <dt-bindings/leds/common.h>
62 compatible = "pwm-leds-multicolor";
Dleds-pwm.yaml4 $id: http://devicetree.org/schemas/leds/leds-pwm.yaml#
7 title: LEDs connected to PWM
13 Each LED is represented as a sub-node of the pwm-leds device. Each
18 const: pwm-leds
46 #include <dt-bindings/leds/common.h>
49 compatible = "pwm-leds";
Dqcom,pm8058-led.yaml4 $id: http://devicetree.org/schemas/leds/qcom,pm8058-led.yaml#
13 The Qualcomm PM8058 contains an LED block for up to six LEDs:: three normal
14 LEDs, two "flash" LEDs and one "keypad backlight" LED. The names are quoted
19 Hardware-wise the different LEDs support slightly different output currents.
20 The "flash" LEDs do not need to charge nor do they support external triggers.
44 #include <dt-bindings/leds/common.h>
Dleds-bcm6358.txt1 LEDs connected to Broadcom BCM6358 controller
4 In these SoCs there are Serial LEDs (LEDs connected to a 74x164 controller),
10 - compatible : should be "brcm,bcm6358-leds".
21 Each LED is represented as a sub-node of the brcm,bcm6358-leds device.
24 - reg : LED pin number (only LEDs 0 to 31 are valid).
27 - label : see Documentation/devicetree/bindings/leds/common.txt
29 Documentation/devicetree/bindings/leds/common.txt
31 Documentation/devicetree/bindings/leds/common.txt
36 compatible = "brcm,bcm6358-leds";
65 compatible = "brcm,bcm6358-leds";
Dleds-ns2.txt4 - compatible: "lacie,ns2-leds".
6 Each LED is represented as a sub-node of the ns2-leds device.
21 #include <dt-bindings/leds/leds-ns2.h>
23 ns2-leds {
24 compatible = "lacie,ns2-leds";
Dleds-el15203000.txt4 This LED Board (aka RED LEDs board) is widely used in
6 The board manages 3 LEDs and supports predefined blinking patterns
7 for specific leds.
16 actually consists of 5 LEDs that exposed by protocol like one LED.
33 see Documentation/devicetree/bindings/leds/common.txt
35 see Documentation/devicetree/bindings/leds/common.txt
40 #include <dt-bindings/leds/common.h>
/Documentation/firmware-guide/acpi/dsd/
Dleds.rst5 Describing and referring to LEDs in ACPI
8 Individual LEDs are described by hierarchical data extension [5] nodes under the
10 tells the numerical ID of each individual LED output to which the LEDs are
11 connected. [leds] The hierarchical data nodes are named "led@X", where X is the
14 Referring to LEDs in Device tree is documented in [video-interfaces], in
15 "flash-leds" property documentation. In short, LEDs are directly referred to by
21 individual LEDs. The value of the "reg" property is a contract between the
32 An ASL example of a camera sensor device and a LED driver device for two LEDs is
33 show below. Objects not relevant for LEDs or the references to them have been
71 "flash-leds",
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/Documentation/devicetree/bindings/net/
Dqca,qca808x.yaml13 QCA808X PHYs can have up to 3 LEDs attached.
14 All 3 LEDs are disabled by default.
15 2 LEDs have dedicated pins with the 3rd LED having the
16 double function of Interrupt LEDs/GPIO or additional LED.
32 #include <dt-bindings/leds/common.h>
42 leds {

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