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/Documentation/ABI/testing/
Dsysfs-platform-dell-laptop1 What: /sys/class/leds/dell::kbd_backlight/als_enabled
10 mode, 0 to disable it.
12 What: /sys/class/leds/dell::kbd_backlight/als_setting
21 What: /sys/class/leds/dell::kbd_backlight/start_triggers
31 enabled are preceded by '+', those disabled by '-'.
34 this file. To disable a trigger, write its name preceded
35 by '-' instead.
39 echo +keyboard > /sys/class/leds/dell::kbd_backlight/start_triggers
41 To disable it::
43 echo -keyboard > /sys/class/leds/dell::kbd_backlight/start_triggers
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Dsysfs-bus-pci4 Contact: linux-pci@vger.kernel.org
15 (Note: kernels before 2.6.28 may require echo -n).
20 Contact: linux-pci@vger.kernel.org
31 (Note: kernels before 2.6.28 may require echo -n).
36 Contact: linux-pci@vger.kernel.org
55 Contact: Chris Wright <chrisw@sous-sol.org>
72 Contact: Linux PCI developers <linux-pci@vger.kernel.org>
74 Writing a non-zero value to this attribute will
76 re-discover previously removed devices.
80 Contact: Linux PCI developers <linux-pci@vger.kernel.org>
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/Documentation/devicetree/bindings/net/
Dqcom,qca807x.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Christian Marangi <ansuelsmth@gmail.com>
11 - Robert Marko <robert.marko@sartura.hr>
15 IEEE 802.3 clause 22 compliant 10BASE-Te, 100BASE-TX and
16 1000BASE-T PHY-s.
21 Both models have a combo port that supports 1000BASE-X and
22 100BASE-FX fiber.
25 output only pins that natively drive LED-s for up to 2 attached
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Drealtek,rtl82xx.yaml1 # SPDX-License-Identifier: GPL-2.0+
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Andrew Lunn <andrew@lunn.ch>
11 - Florian Fainelli <f.fainelli@gmail.com>
12 - Heiner Kallweit <hkallweit1@gmail.com>
20 - ethernet-phy-id001c.c800
21 - ethernet-phy-id001c.c816
22 - ethernet-phy-id001c.c838
23 - ethernet-phy-id001c.c840
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Dethernet-phy.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/net/ethernet-phy.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Andrew Lunn <andrew@lunn.ch>
11 - Florian Fainelli <f.fainelli@gmail.com>
12 - Heiner Kallweit <hkallweit1@gmail.com>
14 # The dt-schema tools will generate a select statement first by using
21 pattern: "^ethernet-phy(@[a-f0-9]+)?$"
24 - $nodename
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/Documentation/devicetree/bindings/leds/
Dleds-lp8860.txt1 * Texas Instruments - lp8860 4-Channel LED Driver
3 The LP8860-Q1 is an high-efficiency LED
4 driver with boost controller. It has 4 high-precision
9 - compatible :
11 - reg : I2C slave address
12 - #address-cells : 1
13 - #size-cells : 0
16 - enable-gpios : gpio pin to enable (active high)/disable the device.
17 - vled-supply : LED supply
20 - reg : 0
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Dkinetic,ktd2692.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/leds/kinetic,ktd2692.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Markuss Broks <markuss.broks@gmail.com>
13 KTD2692 is the ideal power solution for high-power flash LEDs.
14 It uses ExpressWire single-wire programming for maximum flexibility.
17 enable/disable the IC, Movie(max 1/3 of Flash current) / Flash mode current,
21 LED current will be ramped up to the flash-mode current level.
27 ctrl-gpios:
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Dleds-lp50xx.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/leds/leds-lp50xx.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Andrew Davis <afd@ti.com>
13 The LP50XX is multi-channel, I2C RGB LED Drivers that can group RGB LEDs into
27 - ti,lp5009
28 - ti,lp5012
29 - ti,lp5018
30 - ti,lp5024
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Dleds-lm3697.txt1 * Texas Instruments - LM3697 Highly Efficient White LED Driver
3 The LM3697 11-bit LED driver provides high-
10 - compatible:
12 - reg : I2C slave address
13 - #address-cells : 1
14 - #size-cells : 0
17 - enable-gpios : GPIO pin to enable/disable the device
18 - vled-supply : LED supply
21 - reg : 0 - LED is Controlled by bank A
22 1 - LED is Controlled by bank B
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Drohm,bd2606mvv.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/leds/rohm,bd2606mvv.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Andreas Kemnade <andreas@kemnade.info>
18 https://fscdn.rohm.com/en/products/databook/datasheet/ic/power/led_driver/bd2606mvv_1-e.pdf
27 "#address-cells":
30 "#size-cells":
33 enable-gpios:
35 description: GPIO pin to enable/disable the device.
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Dti.lm36922.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/leds/ti.lm36922.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Texas Instruments - LM3692x Highly Efficient White LED Driver
10 - Dan Murphy <dmurphy@ti.com>
13 The LM3692x is an ultra-compact, highly efficient,
14 white-LED driver designed for LCD display backlighting.
26 - ti,lm36922
27 - ti,lm36923
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Dleds-lm3532.txt1 * Texas Instruments - lm3532 White LED driver with ambient light sensing
4 The LM3532 provides the 3 high-voltage, low-side current sinks. The device is
5 programmable over an I2C-compatible interface and has independent
11 each with 32 internal voltage setting resistors, 8-bit logarithmic and linear
16 - compatible : "ti,lm3532"
17 - reg : I2C slave address
18 - #address-cells : 1
19 - #size-cells : 0
22 - enable-gpios : gpio pin to enable (active high)/disable the device.
23 - ramp-up-us - The Run time ramp rates/step are from one current
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/Documentation/leds/
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
9 brightness support so will just be turned on for non-zero brightness settings.
14 existing subsystems with minimal additional code. Examples are the disk-activity,
15 nand-disk and sharpsl-charge triggers. With led triggers disabled, the code
18 Complex triggers while available to all LEDs have LED specific
22 be specified via /sys/class/leds/<device>/delay_{on,off} in milliseconds.
25 also disable the timer trigger.
28 is chosen (via /sys/class/leds/<device>/trigger). Trigger specific
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/Documentation/devicetree/bindings/leds/backlight/
Dlm3630a-backlight.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/leds/backlight/lm3630a-backlight.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: TI LM3630A High-Efficiency Dual-String White LED
10 - Lee Jones <lee@kernel.org>
11 - Daniel Thompson <daniel.thompson@linaro.org>
12 - Jingoo Han <jingoohan1@gmail.com>
15 The LM3630A is a current-mode boost converter which supplies the power and
16 controls the current in up to two strings of 10 LEDs per string.
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Dkinetic,ktd253.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/leds/backlight/kinetic,ktd253.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Kinetic Technologies KTD253 and KTD259 one-wire backlight
10 - Linus Walleij <linus.walleij@linaro.org>
20 - $ref: common.yaml#
25 - enum:
26 - kinetic,ktd253
27 - kinetic,ktd259
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Drichtek,rt4831-backlight.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/leds/backlight/richtek,rt4831-backlight.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - ChiYuan Huang <cy_huang@richtek.com>
20 https://www.richtek.com/assets/product_file/RT4831A/DS4831A-05.pdf
23 - $ref: common.yaml#
27 const: richtek,rt4831-backlight
29 default-brightness:
33 max-brightness:
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Dmps,mp3309c.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/leds/backlight/mps,mp3309c.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Flavio Suligoi <f.suligoi@asem.it>
13 The Monolithic Power (MPS) MP3309C is a WLED step-up converter, featuring a
17 - analog mode, via I2C commands, as default mode (32 dimming levels)
18 - PWM controlled mode (optional)
24 - $ref: common.yaml#
37 enable-gpios:
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Dkinetic,ktz8866.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/leds/backlight/kinetic,ktz8866.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Jianhua Lu <lujianhua000@gmail.com>
13 The Kinetic Technologies KTZ8866 is a high efficiency 6-channels-current-sinks
15 https://www.kinet-ic.com/ktz8866/
18 - $ref: common.yaml#
27 vddpos-supply:
30 vddneg-supply:
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/Documentation/devicetree/bindings/mfd/
Drichtek,rt4831.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - ChiYuan Huang <cy_huang@richtek.com>
23 https://www.richtek.com/assets/product_file/RT4831A/DS4831A-05.pdf
33 enable-gpios:
35 GPIO to enable/disable the chip. It is optional.
40 $ref: /schemas/regulator/richtek,rt4831-regulator.yaml
43 $ref: /schemas/leds/backlight/richtek,rt4831-backlight.yaml
46 - compatible
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/Documentation/devicetree/bindings/auxdisplay/
Dholtek,ht16k33.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Robin van der Gracht <robin@protonic.nl>
13 - $ref: /schemas/input/matrix-keymap.yaml#
18 - items:
19 - enum:
20 - adafruit,3108 # 0.56" 4-Digit 7-Segment FeatherWing Display (Red)
21 - adafruit,3130 # 0.54" Quad Alphanumeric FeatherWing Display (Red)
22 - const: holtek,ht16k33
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/Documentation/admin-guide/laptops/
Dasus-laptop.rst12 This driver provides support for extra features of ACPI-compatible ASUS laptops.
19 blink those fancy LEDs intended for reporting mail and wireless status.
24 ------------
30 ------
35 - Fn key combinations
36 - Bluetooth enable and disable
37 - Wlan enable and disable
38 - GPS enable and disable
39 - Video output switching
40 - Ambient Light Sensor on and off
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Dthinkpad-acpi.rst9 - Borislav Deianov <borislav@users.sf.net>
10 - Henrique de Moraes Holschuh <hmh@hmh.eng.br>
12 http://ibm-acpi.sf.net/
19 This driver used to be named ibm-acpi until kernel 2.6.21 and release
20 0.13-20070314. It used to be in the drivers/acpi tree, but it was
21 moved to the drivers/misc tree and renamed to thinkpad-acpi for kernel
25 The driver is named "thinkpad-acpi". In some places, like module
29 "tpacpi" is used as a shorthand where "thinkpad-acpi" would be too
33 ------
38 - Fn key combinations
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/Documentation/misc-devices/
Dbh1770glc.rst1 .. SPDX-License-Identifier: GPL-2.0
9 - ROHM BH1770GLC
10 - OSRAM SFH7770
19 -----------
28 Proximity part contains IR-led driver up to 3 IR leds. The chip measures
49 -----
52 RO - shows detected chip type and version
55 RW - enable / disable chip
59 - 1 enables the chip
60 - 0 disables the chip
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/Documentation/driver-api/
Dpwm.rst7 PWMs are commonly used for controlling LEDs, fans or vibrators in
11 up to the board designer to connect them to LEDs or fans. To provide
15 ----------------
24 PWM_LOOKUP("tegra-pwm", 0, "pwm-backlight", NULL,
36 ----------
47 enable/disable state.
71 pwm_{enable,disable}() calls in the same function, this probably means you
82 PWM arguments are usually platform-specific and allows the PWM user to only
93 -----------------------------------
102 The number of PWM channels this chip supports (read-only).
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Drfkill.rst2 rfkill - RF kill switch support
17 disable all transmitters of a certain type (or all). This is intended for
25 - hard block
26 read-only radio block that cannot be overridden by software
28 - soft block
34 admin-guide/kernel-parameters.rst.
43 * the deprecated rfkill-input module (an input layer handler, being
49 the system know about hardware-disabled states that may be implemented on
56 When the device is hard-blocked (either by a call to rfkill_set_hw_state()
83 to ensure the driver cannot be built-in when rfkill is modular. The !RFKILL
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