| /linux/drivers/w1/slaves/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
3 # 1-wire slaves configuration
6 menu "1-wire Slaves"
11 Say Y here if you want to connect 1-wire thermal sensors to your
12 wire.
17 Say Y here if you want to connect 1-wire
18 simple 64bit memory rom(ds2401/ds2411/ds1990*) to your wire.
23 Say Y or M here if you want to use a DS2405 1-wire
24 single-channel addressable switch.
25 This device can also work as a single-channel
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| /linux/Documentation/peci/ |
| H A D | peci.rst | 1 .. SPDX-License-Identifier: GPL-2.0-only
13 controller is acting as a PECI originator and the processor - as
15 PECI can be used in both single processor and multiple-processor based
24 PECI Wire
25 ---------
27 PECI Wire interface uses a single wire for self-clocking and data
28 transfer. It does not require any additional control lines - the
29 physical layer is a self-clocked one-wire bus signal that begins each
32 value is logic '0' or logic '1'. PECI Wire also includes variable data
35 For PECI Wire, each processor package will utilize unique, fixed
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| /linux/Documentation/w1/masters/ |
| H A D | w1-uart.rst | 1 .. SPDX-License-Identifier: GPL-2.0-or-later
4 Kernel driver w1-uart
11 -----------
13 UART 1-Wire bus driver. The driver utilizes the UART interface via the
14 Serial Device Bus to create the 1-Wire timing patterns as described in
15 the document `"Using a UART to Implement a 1-Wire Bus Master"`_.
17 …g a UART to Implement a 1-Wire Bus Master": https://www.analog.com/en/technical-articles/using-a-u…
19 In short, the UART peripheral must support full-duplex and operate in
20 open-drain mode. The timing patterns are generated by a specific
21 combination of baud-rate and transmitted byte, which corresponds to a
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| H A D | omap-hdq.rst | 2 Kernel driver for omap HDQ/1-wire module
7 HDQ/1-wire controller on the TI OMAP 2430/3430 platforms.
15 The HDQ/1-Wire module of TI OMAP2430/3430 platforms implement the hardware
17 Semiconductor 1-Wire protocols. These protocols use a single wire for
18 communication between the master (HDQ/1-Wire controller) and the slave
19 (HDQ/1-Wire external compliant device).
21 A typical application of the HDQ/1-Wire module is the communication with battery
24 The controller supports operation in both HDQ and 1-wire mode. The essential
25 difference between the HDQ and 1-wire mode is how the slave device responds to
29 does not respond with a presence pulse as it does in the 1-Wire protocol.
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| /linux/Documentation/devicetree/bindings/input/touchscreen/ |
| H A D | ti,am3359-tsc.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/input/touchscreen/ti,am3359-tsc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Miquel Raynal <miquel.raynal@bootlin.com>
14 const: ti,am3359-tsc
17 description: Wires refer to application modes i.e. 4/5/8 wire touchscreen
22 ti,x-plate-resistance:
26 ti,coordinate-readouts:
28 step is used to read a single coordinate. A single readout is enough but
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| /linux/drivers/w1/masters/ |
| H A D | w1-uart.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * w1-uart - UART 1-Wire bus driver
5 * Uses the UART interface (via Serial Device Bus) to create the 1-Wire
6 * timing patterns. Implements the following 1-Wire master interface:
8 * - reset_bus: requests baud-rate 9600
10 * - touch_bit: requests baud-rate 115200
27 /* Timeout to wait for completion of serdev-receive */
31 * struct w1_uart_config - configuration for 1-Wire operation
32 * @baudrate: baud-rate returned from serdev
33 * @delay_us: delay to complete a 1-Wire cycle (in us)
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| H A D | ds2482.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * ds2482.c - provides i2c to w1-master bridge(s)
7 * It is a I2C to 1-wire bridge.
8 * There are two variations: -100 and -800, which have 1 or 8 1-wire ports.
10 * http://www.maxim-ic.com/quick_view2.cfm/qv_pk/4382
25 * The APU bit controls whether an active pullup (controlled slew-rate
27 * a 1-Wire line from low to high. When APU = 0, active pullup is disabled
29 * only a single slave on the 1-Wire line.
34 "0-disable, 1-enable (default)");
36 /* extra configurations - e.g. 1WS */
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| /linux/drivers/power/supply/ |
| H A D | bq27xxx_battery_hdq.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * BQ27xxx battery monitor HDQ/1-wire driver
5 * Copyright (C) 2007-2017 Texas Instruments Incorporated - https://www.ti.com/
26 MODULE_PARM_DESC(F_ID, "1-wire slave FID for BQ27xxx device");
32 mutex_lock(&sl->master->bus_mutex); in w1_bq27000_read()
33 w1_write_8(sl->master, HDQ_CMD_READ | reg); in w1_bq27000_read()
34 val = w1_read_8(sl->master); in w1_bq27000_read()
35 mutex_unlock(&sl->master->bus_mutex); in w1_bq27000_read()
41 bool single) in bq27xxx_battery_hdq_read() argument
43 struct w1_slave *sl = dev_to_w1_slave(di->dev); in bq27xxx_battery_hdq_read()
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| /linux/include/linux/sunrpc/ |
| H A D | auth_gss.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
38 /* on-the-wire gss cred: */
47 /* on-the-wire gss verifier: */
63 * code needs to know about a single security context. In particular,
64 * gc_gss_ctx is the context handle that is used to do gss-api calls, while
66 * the wire when communicating with a server. */
|
| /linux/Documentation/devicetree/bindings/leds/backlight/ |
| H A D | kinetic,ktd253.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
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>
14 controlled by a single GPIO line. If you just turn on the backlight
16 using pulses on the enable wire. This is sometimes referred to as
20 - $ref: common.yaml#
25 - enum:
26 - kinetic,ktd253
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| H A D | kinetic,ktd2801.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Kinetic Technologies KTD2801 one-wire backlight
10 - Duje Mihanović <duje.mihanovic@skole.hr>
14 by a single GPIO line. The driver can be controlled with a PWM signal
19 - $ref: common.yaml#
25 ctrl-gpios:
28 default-brightness: true
29 max-brightness: true
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| /linux/Documentation/devicetree/bindings/ |
| H A D | trivial-devices.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/trivial-devices.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Rob Herring <robh@kernel.org>
27 spi-max-frequency: true
32 - enum:
34 - acbel,fsg032
35 … # SMBus/I2C Digital Temperature Sensor in 6-Pin SOT with SMBus Alert and Over Temperature Pin
36 - ad,ad7414 # Deprecated, use adi,ad7414
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| /linux/Documentation/devicetree/bindings/iio/addac/ |
| H A D | adi,ad74115.yaml | 1 # 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
16 temperature detector, and thermocouple measurements integrated into a single
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:
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|
| /linux/Documentation/driver-api/gpio/ |
| H A 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
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.
46 - Inputs can often be used as IRQ signals, often edge triggered but
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| /linux/Documentation/w1/ |
| H A D | w1-generic.rst | 2 Introduction to the 1-wire (w1) subsystem
5 The 1-wire bus is a simple master-slave bus that communicates via a single
6 signal wire (plus ground, so two wires).
18 - DS9490 usb device
19 - W1-over-GPIO
20 - DS2482 (i2c to w1 bridge)
21 - Emulated devices, such as a RS232 converter, parallel port adapter, etc
25 ------------------------------
29 - sysfs entries for that w1 master are created
30 - the w1 bus is periodically searched for new slave devices
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| /linux/Documentation/filesystems/nfs/ |
| H A D | localio.rst | 26 But unlike the LOCALIO protocol, the sockaddr-based matching didn't
42 - With LOCALIO:
48 - Without LOCALIO:
55 - With LOCALIO:
61 - Without LOCALIO:
93 deciding if the NFS client and server are co-located on the same
101 same host. The handshake uses a secret that is sent over the wire,
103 in shared kernel memory if they are truly co-located.
115 onus on the server to somehow discover that the client is co-located
122 6. Why is having the client perform a server-side file OPEN, without
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| /linux/include/linux/ |
| H A D | w1.h | 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
12 * struct w1_reg_num - broken out slave device id
49 * struct w1_slave - holds a single slave device on the bus
51 * @owner: Points to the one wire "wire" kernel module.
84 * struct w1_bus_master - operations available on a bus master
93 * @touch_bit: the lowest-level function for devices that really support the
94 * 1-wire protocol.
95 * touch_bit(0) = write-0 cycle
96 * touch_bit(1) = write-1 / read cycle
112 * @reset_bus: long write-0 with a read for the presence pulse detection
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| /linux/Documentation/spi/ |
| H A D | spi-lm70llp.rst | 2 spi_lm70llp : LM70-LLP parport-to-SPI adapter
15 -----------
22 into a SPI bus with a single device, which will be driven by the generic
27 --------------------
28 The schematic for this particular board (the LM70EVAL-LLP) is
39 D0 2 - -
40 D1 3 --> V+ 5
41 D2 4 --> V+ 5
42 D3 5 --> V+ 5
43 D4 6 --> V+ 5
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| /linux/Documentation/devicetree/bindings/net/ |
| H A D | adi,adin1110.yaml | 1 # 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
22 with the IEEE 802.3cg-2019 Ethernet standard for long reach
23 10 Mbps single pair Ethernet (SPE).
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| /linux/Documentation/devicetree/bindings/interrupt-controller/ |
| H A D | arm,vic.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/interrupt-controller/arm,vic.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Rob Herring <robh@kernel.org>
15 be nested or have the outputs wire-OR'd together.
18 - $ref: /schemas/interrupt-controller.yaml#
23 - arm,pl190-vic
24 - arm,pl192-vic
25 - arm,versatile-vic
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| /linux/Documentation/netlink/specs/ |
| H A D | netdev.yaml | 1 # SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)
9 -
11 name: xdp-act
12 render-max: true
14 -
19 -
23 -
24 name: ndo-xmit
27 -
28 name: xsk-zerocopy
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| /linux/Documentation/devicetree/bindings/i2c/ |
| H A D | i2c-octeon.txt | 1 * Two Wire Serial Interface (TWSI) / I2C
3 - compatible: "cavium,octeon-3860-twsi"
9 compatible: "cavium,octeon-7890-twsi"
13 - reg: The base address of the TWSI/I2C bus controller register bank.
15 - #address-cells: Must be <1>.
17 - #size-cells: Must be <0>. I2C addresses have no size component.
19 - interrupts: A single interrupt specifier.
21 - clock-frequency: The I2C bus clock rate in Hz.
25 #address-cells = <1>;
26 #size-cells = <0>;
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| /linux/Documentation/hwmon/ |
| H A D | mcp3021.rst | 22 - Mingkai Hu
23 - Sven Schuchmann <schuchmann@schleissheimer.de>
26 -----------
32 converter (ADC) with 10-bit resolution. The MCP3221 has 12-bit resolution.
34 These devices provide one single-ended input with very low power consumption.
35 Communication to the MCP3021/MCP3221 is performed using a 2-wire I2C
|
| /linux/include/scsi/fc/ |
| H A D | fc_fc2.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
5 * Maintained at www.Open-FCoE.org
21 * This format is set by the FC-FS standard and is sent over the wire.
47 * ssb_s_stat - flags from FC-FS-2 T11/1619-D Rev 0.90.
70 * This format is set by the FC-FS standard and is sent over the wire.
92 * esb_e_stat - flags from FC-FS-2 T11/1619-D Rev 0.90.
103 #define ESB_ST_ERRP_SING (1 << 24) /* abort, discard single sequence */
|
| /linux/arch/hexagon/include/asm/ |
| H A D | cacheflush.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
5 * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
15 * - flush_cache_all() flushes entire cache
16 * - flush_cache_mm(mm) flushes the specified mm context's cache lines
17 * - flush_cache_page(mm, vmaddr, pfn) flushes a single page
18 * - flush_cache_range(vma, start, end) flushes a range of pages
19 * - flush_icache_range(start, end) flush a range of instructions
20 * - flush_dcache_page(pg) flushes(wback&invalidates) a page for dcache
21 * - flush_icache_pages(vma, pg, nr) flushes(invalidates) nr pages for icache
41 * Memory-management related flushes are there to ensure in non-physically
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