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/Documentation/firmware-guide/acpi/
Dlpit.rst1 .. SPDX-License-Identifier: GPL-2.0
4 Low Power Idle Table (LPIT)
7 To enumerate platform Low Power Idle states, Intel platforms are using
8 “Low Power Idle Table” (LPIT). More details about this table can be
12 Residencies for each low power state can be read via FFH
18 - CPU PKG C10 (Read via FFH interface)
19 - Platform Controller Hub (PCH) SLP_S0 (Read via memory mapped interface)
32 This is the lowest possible system power state, achieved only when CPU is in
33 PKG C10 and all functional blocks in PCH are in a low power state.
/Documentation/hwmon/
Dltc2947.rst1 Kernel drivers ltc2947-i2c and ltc2947-spi
10 Addresses scanned: -
14 https://www.analog.com/media/en/technical-documentation/data-sheets/LTC2947.pdf
21 The LTC2947 is a high precision power and energy monitor that measures current,
22 voltage, power, temperature, charge and energy. The device supports both SPI
37 The following attributes are supported. Limits are read-write, reset_history
38 is write-only and all the other attributes are read-only.
41 in0_input VP-VM voltage (mV).
49 in0_label Channel label (VP-VM)
61 curr1_input IP-IM Sense current (mA)
[all …]
Dina2xx.rst10 Addresses: I2C 0x40 - 0x4f
20 Addresses: I2C 0x40 - 0x4f
30 Addresses: I2C 0x40 - 0x4f
40 Addresses: I2C 0x40 - 0x4f
50 Addresses: I2C 0x40 - 0x4f
59 -----------
61 The INA219 is a high-side current shunt and power monitor with an I2C
65 The INA220 is a high or low side current shunt and power monitor with an I2C
68 The INA226 is a current shunt and power monitor with an I2C interface.
71 INA230 and INA231 are high or low side current shunt and power monitors
[all …]
Dxdpe152c4.rst1 .. SPDX-License-Identifier: GPL-2.0
21 -----------
23 This driver implements support for Infineon Digital Multi-phase Controller
27 - Intel VR13, VR13HC and VR14 rev 1.86
29 - Intel SVID rev 1.93. protocol.
30 - PMBus rev 1.3.1 interface.
33 and output current, input and output power and temperature.
38 and maximum and critical alarms. Low Critical thresholds and Low critical alarm are
43 **curr[1-4]_crit**
45 **curr[1-4]_crit_alarm**
[all …]
Dir35221.rst9 Addresses scanned: -
13 Author: Samuel Mendoza-Jonas <sam@mendozajonas.com>
17 -----------
19 IR35221 is a Digital DC-DC Multiphase Converter
23 -----------
32 # echo ir35221 0x70 > /sys/bus/i2c/devices/i2c-4/new_device
36 ----------------
44 curr[2-3]_label "iout[1-2]"
45 curr[2-3]_input Measured output current
46 curr[2-3]_crit Critical maximum current
[all …]
Dpmbus.rst12 Addresses scanned: -
23 Addresses scanned: -
27 https://www.onsemi.com/pub_link/Collateral/ADP4000-D.PDF
29 https://www.onsemi.com/pub_link/Collateral/NCP4200-D.PDF
31 https://www.onsemi.com/pub_link/Collateral/JUNE%202009-%20REV.%200.PDF
33 * Lineage Power
37 Addresses scanned: -
55 Addresses scanned: -
73 Addresses scanned: -
83 Addresses scanned: -
[all …]
/Documentation/ABI/testing/
Dsysfs-bus-iio-vf6103 Contact: linux-iio@vger.kernel.org
6 available modes are "normal", "high-speed" and "low-power",
12 Contact: linux-iio@vger.kernel.org
15 The two available modes are "high-power" and "low-power",
16 where "low-power" mode is the default mode.
Dsysfs-platform_profile4 Description: This file contains a space-separated list of profiles supported for this device.
6 Drivers must use the following standard profile-names:
9 low-power Low power consumption
12 balanced Balance between low power consumption
14 balanced-performance Balance between performance and low
15 power consumption with a slight bias
34 either directly by the embedded-controller or fully handled
/Documentation/devicetree/bindings/power/supply/
Dmaxim,max8903.yaml1 # 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)
[all …]
Dtps65090-charger.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/power/supply/tps65090-charger.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Sebastian Reichel <sre@kernel.org>
13 - $ref: power-supply.yaml#
17 const: ti,tps65090-charger
19 ti,enable-low-current-chrg:
22 Enables charging when a low current is detected while the default logic is to stop charging.
25 - compatible
[all …]
Dmaxim,max17040.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/power/supply/maxim,max17040.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Sebastian Reichel <sre@kernel.org>
13 - $ref: power-supply.yaml#
18 - maxim,max17040
19 - maxim,max17041
20 - maxim,max17043
21 - maxim,max17044
[all …]
/Documentation/devicetree/bindings/usb/
Dpxa-usb.txt6 - 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;
[all …]
Dfsl,imx8mp-dwc3.yaml1 # 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":
[all …]
/Documentation/devicetree/bindings/mfd/
Dmax77620.txt1 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.
[all …]
/Documentation/admin-guide/pm/
Dsleep-states.rst1 .. SPDX-License-Identifier: GPL-2.0
13 Sleep states are global low-power states of the entire system in which user
28 Suspend-to-Idle
29 ---------------
31 This is a generic, pure software, light-weight variant of system suspend (also
34 I/O devices into low-power states (possibly lower-power than available in the
38 The system is woken up from this state by in-band interrupts, so theoretically
43 or :ref:`suspend-to-RAM <s2ram>`, or it can be used in addition to any of the
50 -------
54 operating state is lost (the system core logic retains power), so the system can
[all …]
/Documentation/devicetree/bindings/regulator/
Dmaxim,max77802.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Maxim MAX77802 Power Management IC regulators
10 - Javier Martinez Canillas <javier@dowhile0.org>
11 - Krzysztof Kozlowski <krzk@kernel.org>
14 This is a part of device tree bindings for Maxim MAX77802 Power Management
17 The Maxim MAX77686 provides 10 high-efficiency Buck and 32 Low-DropOut (LDO)
23 Certain regulators support "regulator-initial-mode" and "regulator-mode".
24 The valid modes list is defined in the dt-bindings/regulator/maxim,max77802.h
[all …]
Dsamsung,s5m8767.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Samsung S5M8767 Power Management IC regulators
10 - Krzysztof Kozlowski <krzk@kernel.org>
13 This is a part of device tree bindings for S2M and S5M family of Power
23 "^LDO([1-9]|1[0-9]|2[0-8])$":
36 Describes the different operating modes of the LDO's with power mode
38 0 - always off mode
39 1 - on in normal mode
[all …]
/Documentation/devicetree/bindings/leds/
Dleds-bcm6358.txt5 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).
[all …]
/Documentation/devicetree/bindings/pinctrl/
Dpincfg-node.yaml1 # SPDX-License-Identifier: GPL-2.0-only
3 ---
4 $id: http://devicetree.org/schemas/pinctrl/pincfg-node.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Linus Walleij <linus.walleij@linaro.org>
21 bias-disable:
25 bias-high-impedance:
27 description: high impedance mode ("third-state", "floating")
29 bias-bus-hold:
33 bias-pull-up:
[all …]
/Documentation/devicetree/bindings/net/
Dadi,adin1110.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: ADI ADIN1110 MAC-PHY
10 - Alexandru Tachici <alexandru.tachici@analog.com>
13 The ADIN1110 is a low power single port 10BASE-T1L MAC-
18 The ADIN2111 is a low power, low complexity, two-Ethernet ports
19 switch with integrated 10BASE-T1L PHYs and one serial peripheral
21 applications using low power constrained nodes and is compliant
22 with the IEEE 802.3cg-2019 Ethernet standard for long reach
[all …]
/Documentation/devicetree/bindings/clock/ti/
Ddpll.txt4 register-mapped DPLL with usually two selectable input clocks
8 modes (locked, low power stop etc.) This binding has several
9 sub-types, which effectively result in slightly different setup
12 [1] Documentation/devicetree/bindings/clock/clock-bindings.txt
15 - compatible : shall be one of:
16 "ti,omap3-dpll-clock",
17 "ti,omap3-dpll-core-clock",
18 "ti,omap3-dpll-per-clock",
19 "ti,omap3-dpll-per-j-type-clock",
20 "ti,omap4-dpll-clock",
[all …]
/Documentation/driver-api/pm/
Ddevices.rst1 .. SPDX-License-Identifier: GPL-2.0
7 Device Power Management Basics
10 :Copyright: |copy| 2010-2011 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc.
17 Most of the code in Linux is device drivers, so most of the Linux power
18 management (PM) code is also driver-specific. Most drivers will do very
22 This writeup gives an overview of how drivers interact with system-wide
23 power management goals, emphasizing the models and interfaces that are
25 background for the domain-specific work you'd do with any specific driver.
28 Two Models for Device Power Management
31 Drivers will use one or both of these models to put devices into low-power
[all …]
/Documentation/devicetree/bindings/iio/addac/
Dadi,ad74115.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Cosmin Tanislav <cosmin.tanislav@analog.com>
13 The AD74115H is a single-channel software configurable input/output
17 chip solution with an SPI interface. The device features a 16-bit ADC and a
18 14-bit DAC.
25 - adi,ad74115h
30 spi-max-frequency:
33 spi-cpol: true
[all …]
/Documentation/arch/arm/pxa/
Dmfp.rst7 MFP stands for Multi-Function Pin, which is the pin-mux logic on PXA3xx and
15 mechanism is introduced from PXA3xx to completely move the pin-mux functions
16 out of the GPIO controller. In addition to pin-mux configurations, the MFP
17 also controls the low power state, driving strength, pull-up/down and event
21 +--------+
22 | |--(GPIO19)--+
24 | |--(GPIO...) |
25 +--------+ |
26 | +---------+
27 +--------+ +------>| |
[all …]
/Documentation/power/
Dpci.rst2 PCI Power Management
7 An overview of concepts and the Linux kernel's interfaces related to PCI power
11 This document only covers the aspects of power management specific to PCI
13 power management refer to Documentation/driver-api/pm/devices.rst and
14 Documentation/power/runtime_pm.rst.
18 1. Hardware and Platform Support for PCI Power Management
19 2. PCI Subsystem and Device Power Management
20 3. PCI Device Drivers and Power Management
24 1. Hardware and Platform Support for PCI Power Management
27 1.1. Native and Platform-Based Power Management
[all …]

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