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/Documentation/driver-api/
Dptp.rst1 .. SPDX-License-Identifier: GPL-2.0
9 presents a standardized method for developing PTP user space
14 drivers and a user space interface. The infrastructure supports a
18 - Set time
19 - Get time
20 - Shift the clock by a given offset atomically
21 - Adjust clock frequency
24 - Time stamp external events
25 - Period output signals configurable from user space
26 - Low Pass Filter (LPF) access from user space
[all …]
/Documentation/devicetree/bindings/clock/
Drenesas,5p35023.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Renesas 5p35023 VersaClock 3 programmable I2C clock generator
10 - Biju Das <biju.das.jz@bp.renesas.com>
13 The 5P35023 is a VersaClock programmable clock generator and
14 is designed for low-power, consumer, and high-performance PCI
16 architecture design, and each PLL is individually programmable
19 An internal OTP memory allows the user to store the configuration
20 in the device. After power up, the user can change the device register
[all …]
Datmel,at91rm9200-pmc.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/clock/atmel,at91rm9200-pmc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Claudiu Beznea <claudiu.beznea@microchip.com>
14 system and user peripheral clocks. The PMC enables/disables the clock inputs
20 - items:
21 - const: atmel,at91sam9g20-pmc
22 - const: atmel,at91sam9260-pmc
23 - const: syscon
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/Documentation/watchdog/
Dmlx-wdt.rst11 Mellanox watchdog device is implemented in a programmable logic device.
19 Get time-left isn't supported
23 a user-defined timeout.
25 Get time-left is supported.
50 user space application.
54 This mlx-wdt driver supports both HW watchdog implementations.
58 Mellanox watchdog device, identity name (mlx-wdt-main or mlx-wdt-aux),
61 version - type1 or type2.
66 Programmable logic device registers have little-endian order.
/Documentation/hwmon/
Dmlxreg-fan.rst1 Kernel driver mlxreg-fan
6 - QMB700, equipped with 40x200GbE InfiniBand ports;
7 - MSN3700, equipped with 32x200GbE or 16x400GbE Ethernet ports;
8 - MSN3410, equipped with 6x400GbE plus 48x50GbE Ethernet ports;
9 - MSN3800, equipped with 64x1000GbE Ethernet ports;
14 board with Mellanox Quantum or Spectrume-2 devices.
15 FAN controller is implemented by the programmable device logic.
17 The default registers offsets set within the programmable device is as
36 This setup can be re-programmed with other registers.
39 -----------
[all …]
Dlm77.rst10 Addresses scanned: I2C 0x48 - 0x4b
20 -----------
23 sensor incorporates a band-gap type temperature sensor,
24 10-bit ADC, and a digital comparator with user-programmable upper
42 read-only. Setting temp1_crit_hyst writes the difference between
Dpc87360.rst22 -----------------
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 -----------
56 PC87360 - 2 2 - 0xE1
57 PC87363 - 2 2 - 0xE8
58 PC87364 - 3 3 - 0xE4
60 PC87366 11 3 3 3-4 0xE9
[all …]
Dadc128d818.rst17 -----------
27 Measurements are guaranteed between -55 and +125 degrees. The temperature
32 An alarm is triggered if the voltage has crossed a programmable minimum
42 once, to ensure that alarms are reported to user space.
Dpc87427.rst21 -----------
36 --------------
38 Fan rotation speeds are reported as 14-bit values from a gated clock
41 An alarm is triggered if the rotation speed drops below a programmable
47 -----------------
56 ----------------------
60 connected. The integer part can be 8-bit or 9-bit, and can be signed or
62 temperature format, so user-space adjustment (typically by a factor 2)
Dw83791d.rst10 Addresses scanned: I2C 0x2c - 0x2f
12 Datasheet: http://www.winbond-usa.com/products/winbond_products/pdfs/PCIC/W83791D_W83791Gb.pdf
22 - Frodo Looijaard <frodol@dds.nl>,
23 - Philip Edelbrock <phil@netroedge.com>,
24 - Mark Studebaker <mdsxyz123@yahoo.com>
28 - Shane Huang (Winbond),
29 - Rudolf Marek <r.marek@assembler.cz>
33 - Sven Anders <anders@anduras.de>
34 - Marc Hulsman <m.hulsman@tudelft.nl>
37 -----------------
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Dnct6775.rst19 * Nuvoton NCT5572D/NCT6771F/NCT6772F/NCT6775F/W83677HG-I
83 * Nuvoton NCT6796D-S/NCT6799D-R
93 Guenter Roeck <linux@roeck-us.net>
96 -----------
105 temperatures. The driver reports up to 10 of the temperatures to the user.
120 triggered if the rotation speed has dropped below a programmable limit. On
121 NCT6775F, fan readings can be divided by a programmable divider (1, 2, 4, 8,
130 An alarm is triggered if the voltage has crossed a programmable minimum
138 The mode works for fan1-fan5.
141 ----------------
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Dw83781d.rst10 Addresses scanned: I2C 0x28 - 0x2f, ISA 0x290 (8 I/O ports)
12 Datasheet: http://www.winbond-usa.com/products/winbond_products/pdfs/PCIC/w83781d.pdf
18 Addresses scanned: I2C 0x28 - 0x2f, ISA 0x290 (8 I/O ports)
28 Datasheet: http://www.winbond-usa.com/products/winbond_products/pdfs/PCIC/w83783s.pdf
34 Addresses scanned: I2C 0x28 - 0x2f
42 - Frodo Looijaard <frodol@dds.nl>,
43 - Philip Edelbrock <phil@netroedge.com>,
44 - Mark Studebaker <mdsxyz123@yahoo.com>
47 -----------------
67 -----------
[all …]
/Documentation/ABI/testing/
Dsysfs-driver-jz4780-efuse1 What: /sys/devices/*/<our-device>/nvmem
4 Description: read-only access to the efuse on the Ingenic JZ4780 SoC
5 The SoC has a one time programmable 8K efuse that is
19 Users: any user space application which wants to read the Chip
Dsysfs-class-power5 Contact: linux-pm@vger.kernel.org
14 Contact: linux-pm@vger.kernel.org
23 Contact: linux-pm@vger.kernel.org
32 Contact: linux-pm@vger.kernel.org
43 Contact: linux-pm@vger.kernel.org
66 Contact: linux-pm@vger.kernel.org
81 Contact: linux-pm@vger.kernel.org
94 read-only reporting, unless the 'online' state of the supply
95 is set to be programmable, in which case this value can be set
106 Contact: linux-pm@vger.kernel.org
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Dsysfs-ptp23 attribute is to provide the user with a "friendly
41 Write integer to re-configure it.
61 This file contains the number of programmable periodic
68 This file contains the number of programmable pins
88 This directory contains one file for each programmable
110 This write-only file enables or disables external
128 This write-only file enables or disables periodic
139 This write-only file enables or disables delivery of
/Documentation/devicetree/bindings/mtd/
Dmtd.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Miquel Raynal <miquel.raynal@bootlin.com>
11 - Richard Weinberger <richard@nod.at>
21 User-defined MTD device name. Can be used to assign user friendly
26 '#address-cells':
29 '#size-cells':
36 - compatible
39 "@[0-9a-f]+$":
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/Documentation/admin-guide/laptops/
Dsonypi.rst2 Sony Programmable I/O Control Device Driver Readme
5 - Copyright (C) 2001-2004 Stelian Pop <stelian@popies.net>
6 - Copyright (C) 2001-2002 Alcôve <www.alcove.com>
7 - Copyright (C) 2001 Michael Ashley <m.ashley@unsw.edu.au>
8 - Copyright (C) 2001 Junichi Morita <jun1m@mars.dti.ne.jp>
9 - Copyright (C) 2000 Takaya Kinjo <t-kinjo@tc4.so-net.ne.jp>
10 - Copyright (C) 2000 Andrew Tridgell <tridge@samba.org>
12 This driver enables access to the Sony Programmable I/O Control Device which
17 It will give access (through a user space utility) to some events those laptops
20 - jogdial events (the small wheel on the side of Vaios)
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/Documentation/devicetree/bindings/pwm/
Dopencores,pwm.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - William Qiu <william.qiu@starfivetech.com>
14 mode, the PTC core generates binary signal with user-programmable low and
15 high periods. All PTC counters and registers are 32-bit.
18 - $ref: pwm.yaml#
23 - enum:
24 - starfive,jh7100-pwm
25 - starfive,jh7110-pwm
[all …]
/Documentation/devicetree/bindings/iio/dac/
Dadi,ad5758.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Michael Hennerich <Michael.Hennerich@analog.com>
19 spi-cpha: true
21 adi,dc-dc-mode:
25 Mode of operation of the dc-to-dc converter
31 Programmable Power Control (PPC)
32 In this mode, the VDPC+ voltage is user-programmable to a fixed level
47 adi,range-microvolt:
[all …]
/Documentation/misc-devices/
Dmax6875.rst13 Datasheet: http://pdfserv.maxim-ic.com/en/ds/MAX6874-MAX6875.pdf
19 -----------
21 The Maxim MAX6875 is an EEPROM-programmable power-supply sequencer/supervisor.
23 It also provides 512 bytes of user EEPROM.
33 - vin gpi vout
43 -------------
45 eeprom - 512 bytes of user-defined EEPROM space.
49 ---------------
61 $ echo max6875 0x50 > /sys/bus/i2c/devices/i2c-0/new_device
65 The even-address instance is called 'max6875', the odd one is 'dummy'.
[all …]
Dxilinx_sdfec.rst1 .. SPDX-License-Identifier: GPL-2.0+
4 Xilinx SD-FEC Driver
10 This driver supports SD-FEC Integrated Block for Zynq |Ultrascale+ (TM)| RFSoCs.
15 …f SD-FEC core features, see the `SD-FEC Product Guide (PG256) <https://www.xilinx.com/cgi-bin/docs…
19 - Retrieval of the Integrated Block configuration and status information
20 - Configuration of LDPC codes
21 - Configuration of Turbo decoding
22 - Monitoring errors
24 Missing features, known issues, and limitations of the SD-FEC driver are as
27 - Only allows a single open file handler to any instance of the driver at any time
[all …]
Disl29003.rst20 -----------
21 The ISL29003 is an integrated light sensor with a 16-bit integrating type
22 ADC, I2C user programmable lux range select for optimized counts/lux, and
23 I2C multi-function control and monitoring capabilities. The internal ADC
24 provides 16-bit resolution while rejecting 50Hz and 60Hz flicker caused by
33 ---------
42 -------------
64 2: difference between diodes (l1 - l2, signed 15bit)
/Documentation/fb/
Dinternals.rst10 - Geert Uytterhoeven <geert@linux-m68k.org>, 21 July 1998
11 - James Simmons <jsimmons@user.sf.net>, Nov 26 2002
13 --------------------------------------------------------------------------------
21 1. Outside the kernel (user space)
23 - struct fb_fix_screeninfo
29 - struct fb_var_screeninfo
36 - struct fb_cmap
44 - struct fb_info
49 - struct `par`
60 --------------------------------------------------
[all …]
/Documentation/devicetree/bindings/iio/adc/
Dmaxim,max34408.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Ivan Mikhaylov <fr0st61te@gmail.com>
13 The MAX34408/MAX34409 are two- and four-channel current monitors that are
15 unidirectional current sensor offers precision high-side operation with a
16 low full-scale sense voltage. The devices automatically sequence through
17 two or four channels and collect the current-sense samples and average them
19 user-programmable digital thresholds to indicate overcurrent conditions.
24 https://www.analog.com/media/en/technical-documentation/data-sheets/MAX34408-MAX34409.pdf
[all …]
/Documentation/admin-guide/
Drtc.rst8 the local time zone or daylight savings time -- unless they dual boot
9 with MS-Windows -- but will instead be set to Coordinated Universal Time
12 The newest non-PC hardware tends to just count seconds, like the time(2)
16 Linux has two largely-compatible userspace RTC API families you may
20 so it's not very portable to non-x86 systems.
35 Old PC/AT-Compatible driver: /dev/rtc
36 --------------------------------------
44 a few ways (enabling longer alarm periods, and wake-from-hibernate).
52 subset of the three programmable values, meaning that it could be set to
59 the type of interrupt (update-done, alarm-rang, or periodic) that was
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