Searched +full:use +full:- +full:external +full:- +full:pwm (Results 1 – 25 of 120) sorted by relevance
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| /linux-6.12.1/Documentation/devicetree/bindings/pwm/ |
| D | pwm-samsung.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/pwm/pwm-samsung.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Samsung SoC PWM timers
10 - Thierry Reding <thierry.reding@gmail.com>
11 - Krzysztof Kozlowski <krzk@kernel.org>
14 Samsung SoCs contain PWM timer blocks which can be used for system clock source
15 and clock event timers, as well as to drive SoC outputs with PWM signal. Each
16 PWM timer block provides 5 PWM channels (not all of them can drive physical
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| D | ti,omap-dmtimer-pwm.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/pwm/ti,omap-dmtimer-pwm.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: TI dual mode timer PWM controller
10 - Tony Lindgren <tony@atomide.com>
13 TI dual mode timer instances have an IO pin for PWM capability
16 - $ref: pwm.yaml#
20 const: ti,omap-dmtimer-pwm
22 "#pwm-cells":
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| /linux-6.12.1/Documentation/devicetree/bindings/leds/backlight/ |
| D | mediatek,mt6370-backlight.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/leds/backlight/mediatek,mt6370-backlight.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - ChiaEn Wu <chiaen_wu@richtek.com>
21 - $ref: common.yaml#
26 - mediatek,mt6370-backlight
27 - mediatek,mt6372-backlight
29 default-brightness:
32 max-brightness:
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| /linux-6.12.1/Documentation/devicetree/bindings/display/bridge/ |
| D | parade,ps8622.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
15 - parade,ps8622
16 - parade,ps8625
21 lane-count:
24 description: Number of DP lanes to use.
26 use-external-pwm:
28 description: Backlight will be controlled by an external PWM.
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| /linux-6.12.1/include/soc/at91/ |
| D | atmel_tcb.h | 17 * Many 32-bit Atmel SOCs include one or more TC blocks, each of which holds
18 * three general-purpose 16-bit timers. These timers share one register bank.
22 * These TC blocks may have up to nine external pins: TCLK0..2 signals for
23 * clocks or clock gates, and per-timer TIOA and TIOB signals used for PWM
24 * or triggering. Those pins need to be set up for use with the TC block,
30 * timers. Then they use clk_get() and platform_get_irq() to get clock and
37 * struct atmel_tcb_config - SoC data for a Timer/Counter Block
50 * struct atmel_tc - information about a Timer/Counter Block
57 * @node: list node, for tclib internal use
58 * @allocated: if already used, for tclib internal use
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| /linux-6.12.1/Documentation/hwmon/ |
| D | f71805f.rst | 44 -----------
50 This chip also has fan controlling features, using either DC or PWM, in
57 The Fintek F71806F/FG Super-I/O chip is essentially the same as the
65 ------------------
67 Voltages are sampled by an 8-bit ADC with a LSB of 8 mV. The supported
69 need external resistors. An exception is in0, which is used to monitor
81 name use R1 R2 divider raw val.
84 in1 VIN1 VTT1.2V 10K - 1.00 1.20 V
89 in6 VIN6 VCC1.5V 10K - 1.00 1.50 V
90 in7 VIN7 VCORE 10K - 1.00 ~1.40 V [1]_
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| D | vt1211.rst | 10 Addresses scanned: none, address read from Super-I/O config space
24 -----------------
29 configuration for channels 1-5.
30 Legal values are in the range of 0-31. Bit 0 maps to
47 -----------
49 The VIA VT1211 Super-I/O chip includes complete hardware monitoring
52 implements 5 universal input channels (UCH1-5) that can be individually
60 connected to the PWM outputs of the VT1211 :-().
66 Sensor Voltage Mode Temp Mode Default Use (from the datasheet)
80 ------------------
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| D | pc87360.rst | 22 -----------------
27 - 0: None
28 - **1**: Forcibly enable internal voltage and temperature channels,
30 - 2: Forcibly enable all voltage and temperature channels, except in9
31 - 3: Forcibly enable all voltage and temperature channels, including in9
42 -----------
45 PWM control circuitry for two fans. The PC87363 chip is similar, and the
46 PC87364 chip has monitoring and PWM control for a third fan.
54 Chip #vin #fan #pwm #temp devid
56 PC87360 - 2 2 - 0xE1
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| D | w83793.rst | 10 Addresses scanned: I2C 0x2c - 0x2f
15 - Yuan Mu (Winbond Electronics)
16 - Rudolf Marek <r.marek@assembler.cz>
20 -----------------
26 settings. Use 'reset=1' to reset the chip when loading this module.
36 -----------
42 6 remote temperatures, up to 8 sets of PWM fan controls, SmartFan
43 (automatic fan speed control) on all temperature/PWM combinations, 2
44 sets of 6-pin CPU VID input.
48 voltage0-2 is 2mV, resolution of voltage3/4/5 is 16mV, 8mV for voltage6,
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| D | sysfs-interface.rst | 5 through the sysfs interface. Since lm-sensors 3.0.0, libsensors is
6 completely chip-independent. It assumes that all the kernel drivers
10 This is a major improvement compared to lm-sensors 2.
18 range using external resistors. Since the values of these resistors
22 For this reason, even if we aim at a chip-independent libsensors, it will
26 An alternative method that some programs use is to access the sysfs
37 Up to lm-sensors 3.0.0, libsensors looks for hardware monitoring attributes
38 in the "physical" device directory. Since lm-sensors 3.0.1, attributes found
40 (e.g. drivers for multifunction chips) may want to use this possibility to
51 except for voltages which start from 0 (because most data sheets use
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| D | lm85.rst | 79 - Philip Pokorny <ppokorny@penguincomputing.com>,
80 - Frodo Looijaard <frodol@dds.nl>,
81 - Richard Barrington <rich_b_nz@clear.net.nz>,
82 - Margit Schubert-While <margitsw@t-online.de>,
83 - Justin Thiessen <jthiessen@penguincomputing.com>
86 -----------
92 The LM85 uses the 2-wire interface compatible with the SMBUS 2.0
94 temperatures and five (5) voltages. It has four (4) 16-bit counters for
96 VID signals from the processor to the VRM. Lastly, there are three (3) PWM
100 voltage can be measured without external resistors:
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| D | lm63.rst | 45 -----------
53 - No low limit for local temperature.
54 - No critical limit for local temperature.
55 - Critical limit for remote temperature can be changed only once. We
56 will consider that the critical limit is read-only.
67 store the value in an 8-bit register and have a selectable clock divider
68 to make sure that the result will fit in the register, the LM63 uses 16-bit
73 function. Depending on how the board designer wanted to use the chip, fan
80 A PWM output can be used to control the speed of the fan. The LM63 has two
81 PWM modes: manual and automatic. Automatic mode is not fully implemented yet
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| D | f71882fg.rst | 103 This is the 64-pin variant of the F71889FG, they have the
119 -----------
125 These chips also have fan controlling features, using either DC or PWM, in
133 ----------
136 interface as documented in sysfs-interface, without any exceptions.
140 -----------
142 Both PWM (pulse-width modulation) and DC fan speed control methods are
143 supported. The right one to use depends on external circuitry on the
149 vica versa. So the temperature zone trip points 1-4 (or 1-2) go from high temp
153 There are 2 modes to specify the speed of the fan, PWM duty cycle (or DC
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| D | lm93.rst | 10 Addresses scanned: I2C 0x2c-0x2e
18 Addresses scanned: I2C 0x2c-0x2e
24 - Mark M. Hoffman <mhoffman@lightlink.com>
25 - Ported to 2.6 by Eric J. Bowersox <ericb@aspsys.com>
26 - Adapted to 2.6.20 by Carsten Emde <ce@osadl.org>
27 - Modified for mainline integration by Hans J. Koch <hjk@hansjkoch.de>
30 -----------------
33 Set to non-zero to force some initializations (default is 0).
38 Configures in7 and in8 limit type, where 0 means absolute and non-zero
43 not a compelling use case for enabling both at once, anyway. The default
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| /linux-6.12.1/Documentation/devicetree/bindings/mfd/ |
| D | stericsson,ab8500.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: ST-Ericsson Analog Baseband AB8500 and AB8505
10 - Linus Walleij <linus.walleij@linaro.org>
13 the AB8500 "Analog Baseband" is the mixed-signals integrated circuit
14 handling power management (regulators), analog-to-digital conversion
15 (ADC), battery charging, fuel gauging of the battery, battery-backed
16 RTC, PWM, USB PHY and some GPIO lines in the ST-Ericsson U8500 platforms
21 USB charging handling has changed, and it has an embedded USB-to-serial
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| /linux-6.12.1/arch/m68k/include/asm/ |
| D | MC68328.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
3 /* include/asm-m68knommu/MC68328.h: '328 control registers
8 * Based on include/asm-m68knommu/MC68332.h
26 * 0xFFFFF0xx -- System Control
36 #define SCR_WDTH8 0x01 /* 8-Bit Width Select */
39 #define SCR_BETEN 0x10 /* Bus-Error Time-Out Enable */
42 #define SCR_BETO 0x80 /* Bus-Error TimeOut */
52 * 0xFFFFF1xx -- Chip-Select logic
58 * 0xFFFFF2xx -- Phase Locked Loop (PLL) & Power Control
76 #define GRPBASE_GBA_MASK 0xfff0 /* Group Base Address (bits 31-20) */
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| D | MC68EZ328.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
3 /* include/asm-m68knommu/MC68EZ328.h: 'EZ328 control registers
8 * Based on include/asm-m68knommu/MC68332.h
27 * 0xFFFFF0xx -- System Control
37 #define SCR_WDTH8 0x01 /* 8-Bit Width Select */
40 #define SCR_BETEN 0x10 /* Bus-Error Time-Out Enable */
43 #define SCR_BETO 0x80 /* Bus-Error TimeOut */
53 * 0xFFFFF1xx -- Chip-Select logic
84 #define CSA_EN 0x0001 /* Chip-Select Enable */
85 #define CSA_SIZ_MASK 0x000e /* Chip-Select Size */
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| D | MC68VZ328.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
3 /* include/asm-m68knommu/MC68VZ328.h: 'VZ328 control registers
5 * Copyright (c) 2000-2001 Lineo Inc. <www.lineo.com>
6 * Copyright (c) 2000-2001 Lineo Canada Corp. <www.lineo.ca>
9 * Based on include/asm-m68knommu/MC68332.h
29 * 0xFFFFF0xx -- System Control
39 #define SCR_WDTH8 0x01 /* 8-Bit Width Select */
42 #define SCR_BETEN 0x10 /* Bus-Error Time-Out Enable */
45 #define SCR_BETO 0x80 /* Bus-Error TimeOut */
55 * 0xFFFFF1xx -- Chip-Select logic
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| /linux-6.12.1/Documentation/driver-api/gpio/ |
| D | drivers-on-gpio.rst | 6 the right in-kernel and userspace APIs/ABIs for the job, and that these
10 - leds-gpio: drivers/leds/leds-gpio.c will handle LEDs connected to GPIO
13 - ledtrig-gpio: drivers/leds/trigger/ledtrig-gpio.c will provide a LED trigger,
15 (and that LED may in turn use the leds-gpio as per above).
17 - gpio-keys: drivers/input/keyboard/gpio_keys.c is used when your GPIO line
20 - gpio-keys-polled: drivers/input/keyboard/gpio_keys_polled.c is used when your
24 - gpio_mouse: drivers/input/mouse/gpio_mouse.c is used to provide a mouse with
29 - gpio-beeper: drivers/input/misc/gpio-beeper.c is used to provide a beep from
30 an external speaker connected to a GPIO line. (If the beep is controlled by
31 off/on, for an actual PWM waveform, see pwm-gpio below.)
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| /linux-6.12.1/drivers/bus/ |
| D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0
37 Driver for the Broadcom Set Top Box System-on-a-chip internal bus
42 bool "Baikal-T1 APB-bus driver"
46 Baikal-T1 AXI-APB bridge is used to access the SoC subsystem CSRs.
53 errors counter. The counter and the APB-bus operations timeout can be
57 bool "Baikal-T1 AXI-bus driver"
61 AXI3-bus is the main communication bus connecting all high-speed
62 peripheral IP-cores with RAM controller and with MIPS P5600 cores on
63 Baikal-T1 SoC. Traffic arbitration is done by means of DW AMBA 3 AXI
95 The WEIM(Wireless External Interface Module) works like a bus.
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| /linux-6.12.1/Documentation/ABI/testing/ |
| D | sysfs-bus-iio-adc-stm32 | 5 The STM32 ADC can be configured to use external trigger sources
6 (e.g. timers, pwm or exti gpio). Then, it can be tuned to start
7 conversions on external trigger by either:
9 - "rising-edge"
10 - "falling-edge"
11 - "both-edges".
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| /linux-6.12.1/Documentation/devicetree/bindings/regulator/ |
| D | richtek,rt5739.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: Richtek RT5739 Step-Down Buck Converter
10 - ChiYuan Huang <cy_huang@richtek.com>
13 The RT5739 is a step-down switching buck converter that can deliver the
19 - $ref: regulator.yaml#
24 - richtek,rt5733
25 - richtek,rt5739
30 enable-gpios:
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| /linux-6.12.1/Documentation/driver-api/thermal/ |
| D | nouveau_thermal.rst | 12 -----------
17 Currently, due to the absence of in-kernel API to access HWMON drivers, Nouveau
18 cannot access any of the i2c external monitoring chips it may find. If you
24 ----------------------
26 Temperature is exposed under as a read-only HWMON attribute temp1_input.
56 --------------
64 Current PWM value (power percentage);
66 The minimum PWM speed allowed;
68 The maximum PWM speed allowed (bypassed when hitting Fan_boost);
78 * 1: The fan can be driven in manual (use pwm1 to change the speed);
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| /linux-6.12.1/Documentation/devicetree/bindings/input/ |
| D | dlg,da7280.txt | 4 - compatible: Should be "dlg,da7280".
5 - reg: Specifies the I2C slave address.
7 - interrupt-parent : Specifies the phandle of the interrupt controller to
10 - dlg,actuator-type: Set Actuator type. it should be one of:
11 "LRA" - Linear Resonance Actuator type.
12 "ERM-bar" - Bar type Eccentric Rotating Mass.
13 "ERM-coin" - Coin type Eccentric Rotating Mass.
15 - dlg,const-op-mode: Haptic operation mode for FF_CONSTANT.
17 1 - Direct register override(DRO) mode triggered by i2c(default),
18 2 - PWM data source mode controlled by PWM duty,
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| /linux-6.12.1/include/uapi/linux/ |
| D | comedi.h | 1 /* SPDX-License-Identifier: LGPL-2.0+ WITH Linux-syscall-note */
6 * COMEDI - Linux Control and Measurement Device Interface
7 * Copyright (C) 1998-2001 David A. Schleef <ds@schleef.org>
24 * don't want this to be much more than you actually use.
32 * NOTE: 'comedi_config --init-data' is deprecated
40 /* length of nth chunk of firmware data -*/
78 /* counters -- these are arbitrary values */
120 /* try to use a real-time interrupt while performing command */
123 /* wake up on end-of-scan events */
165 #define TRIG_EXT 0x00000040 /* trigger on external signal N */
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