Searched +full:power +full:- +full:active +full:- +full:low (Results 1 – 25 of 183) sorted by relevance
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| /Documentation/devicetree/bindings/leds/ |
| D | leds-bcm6358.txt | 5 which can either be controlled by software (exporting the 74x164 as spi-gpio.
10 - compatible : should be "brcm,bcm6358-leds".
11 - #address-cells : must be 1.
12 - #size-cells : must be 0.
13 - reg : BCM6358 LED controller address and size.
16 - brcm,clk-div : SCK signal divider. Possible values are 1, 2, 4 and 8.
18 - brcm,clk-dat-low : Boolean, makes clock and data signals active low.
21 Each LED is represented as a sub-node of the brcm,bcm6358-leds device.
23 LED sub-node required properties:
24 - reg : LED pin number (only LEDs 0 to 31 are valid).
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| D | leds-bcm6328.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/leds/leds-bcm6328.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Álvaro Fernández Rojas <noltari@gmail.com>
17 as spi-gpio. See
21 exporting the 74x164 as spi-gpio prevents those LEDs to be hardware
29 explained later in brcm,link-signal-sources). Even if a LED is hardware
34 Each LED is represented as a sub-node of the brcm,bcm6328-leds device.
38 const: brcm,bcm6328-leds
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| /Documentation/devicetree/bindings/power/supply/ |
| D | maxim,max8903.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/power/supply/maxim,max8903.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Sebastian Reichel <sre@kernel.org>
13 - $ref: power-supply.yaml#
19 dok-gpios:
21 description: Valid DC power has been detected (active low, input)
23 uok-gpios:
25 description: Valid USB power has been detected (active low, input)
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| D | active-semi,act8945a-charger.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/power/supply/active-semi,act8945a-charger.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Active-semi ACT8945A Charger Function
10 - Sebastian Reichel <sre@kernel.org>
13 - $ref: power-supply.yaml#
17 const: active-semi,act8945a-charger
22 active-semi,chglev-gpios:
26 active-semi,lbo-gpios:
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| /Documentation/devicetree/bindings/display/panel/ |
| D | panel-common.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/display/panel/panel-common.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Thierry Reding <thierry.reding@gmail.com>
11 - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
24 width-mm:
29 height-mm:
43 non-descriptive information. For instance an LCD panel in a system that
55 panel-timing:
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| /Documentation/devicetree/bindings/usb/ |
| D | pxa-usb.txt | 6 - compatible: Should be "marvell,pxa-ohci" for USB controllers
10 - "marvell,enable-port1", "marvell,enable-port2", "marvell,enable-port3"
12 - "marvell,port-mode" selects the mode of the ports:
16 - "marvell,power-sense-low" - power sense pin is low-active.
17 - "marvell,power-control-low" - power control pin is low-active.
18 - "marvell,no-oc-protection" - disable over-current protection.
19 - "marvell,oc-mode-perport" - enable per-port over-current protection.
20 - "marvell,power_on_delay" Power On to Power Good time - in ms.
25 compatible = "marvell,pxa-ohci";
28 marvell,enable-port1;
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| D | fsl,imx8mp-dwc3.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 ---
5 $id: http://devicetree.org/schemas/usb/fsl,imx8mp-dwc3.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Li Jun <jun.li@nxp.com>
15 const: fsl,imx8mp-dwc3
19 - description: Address and length of the register set for HSIO Block Control
20 - description: Address and length of the register set for the wrapper of dwc3 core on the SOC.
22 "#address-cells":
25 "#size-cells":
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| /Documentation/driver-api/gpio/ |
| D | intro.rst | 17 A "General Purpose Input/Output" (GPIO) is a flexible software-controlled
25 System-on-Chip (SOC) processors heavily rely on GPIOs. In some cases, every
26 non-dedicated pin can be configured as a GPIO; and most chips have at least
28 provide GPIOs; multifunction chips like power managers, and audio codecs
31 Most PC southbridges have a few dozen GPIO-capable pins (with only the BIOS
36 - Output values are writable (high=1, low=0). Some chips also have
38 value might be driven, supporting "wire-OR" and similar schemes for the
41 - Input values are likewise readable (1, 0). Some chips support readback
42 of pins configured as "output", which is very useful in such "wire-OR"
44 input de-glitch/debounce logic, sometimes with software controls.
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| D | board.rst | 14 -----------
20 <function>-gpios, where <function> is the function the driver will request
26 led-gpios = <&gpio 15 GPIO_ACTIVE_HIGH>, /* red */
30 power-gpios = <&gpio 1 GPIO_ACTIVE_LOW>;
33 Properties named <function>-gpio are also considered valid and old bindings use
38 "led" function, and GPIO 1 as the "power" GPIO::
40 struct gpio_desc *red, *green, *blue, *power;
46 power = gpiod_get(dev, "power", GPIOD_OUT_HIGH);
48 The led GPIOs will be active high, while the power GPIO will be active low (i.e.
49 gpiod_is_active_low(power) will be true).
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| /Documentation/devicetree/bindings/leds/irled/ |
| D | ir-spi-led.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/leds/irled/ir-spi-led.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Sean Young <sean@mess.org>
17 - $ref: /schemas/spi/spi-peripheral-props.yaml#
21 const: ir-spi-led
26 duty-cycle:
30 Percentage of one period in which the signal is active.
32 led-active-low:
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| /Documentation/admin-guide/pm/ |
| D | strategies.rst | 1 .. SPDX-License-Identifier: GPL-2.0
5 Power Management Strategies
13 The Linux kernel supports two major high-level power management strategies.
15 One of them is based on using global low-power states of the whole system in
17 significantly reduced, referred to as :doc:`sleep states <sleep-states>`. The
23 :doc:`system-wide power management <system-wide>`.
25 The other strategy, referred to as the :doc:`working-state power management
26 <working-state>`, is based on adjusting the power states of individual hardware
30 a metastate covering a range of different power states of the system in which
31 the individual components of it can be either ``active`` (in use) or
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| /Documentation/devicetree/bindings/media/i2c/ |
| D | aptina,mt9v111.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Jacopo Mondi <jacopo@jmondi.org>
13 The Aptina MT9V111 is a 1/4-Inch VGA-format digital image sensor with a core
16 The sensor has an active pixel array of 640x480 pixels and can output a number
17 of image resolutions and formats controllable through a simple two-wires
30 enable-gpios:
31 description: Enable signal, pin name "OE#". Active low.
34 standby-gpios:
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| D | ovti,ov5670.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Jacopo Mondi <jacopo.mondi@ideasonboard.com>
12 description: |-
13 The OV5670 is a 5 Megapixels raw image sensor which provides images in 10-bits
14 RAW BGGR Bayer format on a 2 data lanes MIPI CSI-2 serial interface and is
28 powerdown-gpios:
29 description: Reference to the GPIO connected to the PWDNB pin. Active low.
31 reset-gpios:
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| D | ovti,ov5648.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Paul Kocialkowski <paul.kocialkowski@bootlin.com>
21 - description: XVCLK Clock
23 assigned-clocks:
26 assigned-clock-rates:
29 dvdd-supply:
30 description: Digital Domain Power Supply
32 avdd-supply:
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| D | ovti,ov8865.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Paul Kocialkowski <paul.kocialkowski@bootlin.com>
21 - description: EXTCLK Clock
23 assigned-clocks:
26 assigned-clock-rates:
29 dvdd-supply:
30 description: Digital Domain Power Supply
32 avdd-supply:
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| /Documentation/devicetree/bindings/hwmon/ |
| D | adi,max31827.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Analog Devices MAX31827, MAX31828, MAX31829 Low-Power Temperature Switch
10 - Daniel Matyas <daniel.matyas@analog.com>
13 Analog Devices MAX31827, MAX31828, MAX31829 Low-Power Temperature Switch with
15 https://www.analog.com/media/en/technical-documentation/data-sheets/MAX31827-MAX31829.pdf
20 - const: adi,max31827
21 - items:
22 - enum:
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| /Documentation/devicetree/bindings/power/reset/ |
| D | gpio-restart.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/power/reset/gpio-restart.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Sebastian Reichel <sre@kernel.org>
17 'open-source' is not found, the GPIO line will be driven in the inactive state. Otherwise its
21 is configured as an output, and driven active, triggering a level triggered reset condition.
22 This will also cause an inactive->active edge condition, triggering positive edge triggered
23 reset. After a delay specified by active-delay, the GPIO is set to inactive, thus causing an
24 active->inactive edge, triggering negative edge triggered reset. After a delay specified by
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| /Documentation/devicetree/bindings/net/ |
| D | sff,sfp.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Small Form Factor (SFF) Committee Small Form-factor Pluggable (SFP)
11 - Russell King <linux@armlinux.org.uk>
16 - sff,sfp # for SFP modules
17 - sff,sff # for soldered down SFF modules
19 i2c-bus:
24 maximum-power-milliwatt:
28 Maximum module power consumption Specifies the maximum power consumption
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| D | renesas,ether.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - $ref: ethernet-controller.yaml#
13 - Sergei Shtylyov <sergei.shtylyov@gmail.com>
18 - items:
19 - enum:
20 - renesas,gether-r8a7740 # device is a part of R8A7740 SoC
21 - renesas,gether-r8a77980 # device is a part of R8A77980 SoC
22 - renesas,ether-r7s72100 # device is a part of R7S72100 SoC
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| /Documentation/devicetree/bindings/sound/ |
| D | rohm,bd28623.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
15 - Katsuhiro Suzuki <katsuhiro@katsuster.net>
18 - $ref: dai-common.yaml#
24 "#sound-dai-cells":
27 VCCA-supply:
29 regulator phandle for the VCCA (for analog) power supply
31 VCCP1-supply:
33 regulator phandle for the VCCP1 (for ch1) power supply
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| /Documentation/devicetree/bindings/iio/chemical/ |
| D | ams,ccs811.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Narcisa Vasile <narcisaanamaria12@gmail.com>
13 Ultra-Low Power Digital Gas Sensor for Monitoring Indoor Air Quality.
18 - ams,ccs811
22 reset-gpios:
23 description: GPIO connected to the nRESET line. This is an active low
27 wakeup-gpios:
28 description: GPIO connected to the nWAKE line. This is an active low
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| /Documentation/devicetree/bindings/rtc/ |
| D | rtc-omap.txt | 4 - compatible:
5 - "ti,da830-rtc" - for RTC IP used similar to that on DA8xx SoC family.
6 - "ti,am3352-rtc" - for RTC IP used similar to that on AM335x SoC family.
7 This RTC IP has special WAKE-EN Register to enable
11 - "ti,am4372-rtc" - for RTC IP used similar to that on AM437X SoC family.
12 - reg: Address range of rtc register set
13 - interrupts: rtc timer, alarm interrupts in order
16 - system-power-controller: whether the rtc is controlling the system power
18 - clocks: Any internal or external clocks feeding in to rtc
19 - clock-names: Corresponding names of the clocks
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| /Documentation/devicetree/bindings/input/touchscreen/ |
| D | cypress,cy8ctma340.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
14 - Javier Martinez Canillas <javier@dowhile0.org>
15 - Linus Walleij <linus.walleij@linaro.org>
18 - $ref: touchscreen.yaml#
26 - const: cypress,cy8ctma340
27 - const: cypress,cy8ctst341
28 - const: cypress,cyttsp-spi
31 - const: cypress,cyttsp-i2c
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| /Documentation/devicetree/bindings/display/bridge/ |
| D | ps8640.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Nicolas Boichat <drinkcat@chromium.org>
13 The PS8640 is a low power MIPI-to-eDP video format converter supporting
28 powerdown-gpios:
30 description: GPIO connected to active low powerdown.
32 reset-gpios:
34 description: GPIO connected to active low reset.
36 vdd12-supply:
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| /Documentation/devicetree/bindings/mfd/ |
| D | max77620.txt | 1 MAX77620 Power management IC from Maxim Semiconductor.
4 -------------------
5 - compatible: Must be one of
9 - reg: I2C device address.
12 -------------------
13 - interrupts: The interrupt on the parent the controller is
15 - interrupt-controller: Marks the device node as an interrupt controller.
16 - #interrupt-cells: is <2> and their usage is compliant to the 2 cells
17 variant of <../interrupt-controller/interrupts.txt>
19 are defined at dt-bindings/mfd/max77620.h.
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