| /linux/Documentation/devicetree/bindings/hwmon/ |
| H A D | ntc-thermistor.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2 ---
3 $id: http://devicetree.org/schemas/hwmon/ntc-thermistor.yaml#
4 $schema: http://devicetree.org/meta-schemas/core.yaml#
9 - Linus Walleij <linus.walleij@linaro.org>
13 vary in resistance in an often non-linear way in relation to temperature.
16 temperature is non-linear, software drivers most often need to use a look
19 When used in practice, a thermistor is often connected between ground, a
20 pull-up resistor or/and a pull-down resistor and a fixed voltage like this:
22 + e.g. 5V = pull-up voltage (puv)
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| /linux/Documentation/devicetree/bindings/iio/amplifiers/ |
| H A D | adi,hmc425a.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Michael Hennerich <michael.hennerich@analog.com>
15 ADRF5750 2 dB LSB, 4-Bit, Silicon Digital Attenuator, 10 MHz to 60 GHz
16 https://www.analog.com/media/en/technical-documentation/data-sheets/adrf5740.pdf
18 HMC425A 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, 2.2 - 8.0 GHz
19 https://www.analog.com/media/en/technical-documentation/data-sheets/hmc425A.pdf
21 HMC540S 1 dB LSB Silicon MMIC 4-Bit Digital Positive Control Attenuator, 0.1 - 8 GHz
22 https://www.analog.com/media/en/technical-documentation/data-sheets/hmc540s.pdf
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| /linux/Documentation/networking/pse-pd/ |
| H A D | pse-pi.rst | 1 .. SPDX-License-Identifier: GPL-2.0
8 blueprint that outlines how one or multiple power sources are connected to the
9 eight-pin modular jack, commonly known as the Ethernet RJ45 port. This
14 ---------------------------
19 - Section "33.2.3 PI pin assignments" covers the pin assignments for PoE
21 - Section "145.2.4 PSE PI" addresses the configuration for PoE systems that
25 -------------------------------
31 two pairs of wires, SPE operates on a simpler model due to its single-pair
33 assignments for power delivery, as described in the PSE PI for multi-pair
37 --------------------
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| /linux/Documentation/hwmon/ |
| H A D | pcf8591.rst | 17 - Aurelien Jarno <aurelien@aurel32.net>
18 - valuable contributions by Jan M. Sendler <sendler@sendler.de>,
19 - Jean Delvare <jdelvare@suse.de>
23 -----------
25 The PCF8591 is an 8-bit A/D and D/A converter (4 analog inputs and one
29 The PCF8591 has 4 analog inputs programmable as single-ended or
32 - mode 0 : four single ended inputs
35 - mode 1 : three differential inputs
37 Pins AIN0 to AIN2 are positive differential inputs for channels 0 to 2
39 - mode 2 : single ended and differential mixed
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| /linux/Documentation/devicetree/bindings/iio/adc/ |
| H A D | adi,ad7124.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
4 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Stefa
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| H A D | adi,ad7606.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Michael Hennerich <michael.hennerich@analog.com>
14 https://www.analog.com/media/en/technical-documentation/data-sheets/AD7605-4.pdf
15 https://www.analog.com/media/en/technical-documentation/data-sheets/ad7606_7606-6_7606-4.pdf
16 https://www.analog.com/media/en/technical-documentation/data-sheets/AD7606B.pdf
17 https://www.analog.com/media/en/technical-documentation/data-sheets/ad7606c-16.pdf
18 https://www.analog.com/media/en/technical-documentation/data-sheets/ad7606c-18.pdf
19 https://www.analog.com/media/en/technical-documentation/data-sheets/ad7607.pdf
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| H A D | adi,ad7192.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
4 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Michae
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| H A D | adi,max11410.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
4 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Ibrahim Tilki <Ibrahim.Tilki@analog.com>
21 - adi,max11410
30 interrupt-names:
34 - enum: [gpio0, gpio1]
35 - const: gpio1
37 '#address-cells':
40 '#size-cells':
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| /linux/fs/overlayfs/ |
| H A D | namei.c | 1 // SPDX-License-Identifier: GPL-2.0-only
37 struct ovl_fs *ofs = OVL_FS(d->sb); in ovl_check_redirect()
39 d->absolute_redirect = false; in ovl_check_redirect()
45 d->absolute_redirect = true; in ovl_check_redirect()
49 * that will stop further lookup in lower layers (d->stop=true) in ovl_check_redirect()
52 * layers (reset d->stop). in ovl_check_redirect()
54 d->stop = false; in ovl_check_redirect()
58 memcpy(buf, d->name.name, prelen); in ovl_check_redirect()
62 kfree(d->redirect); in ovl_check_redirect()
63 d->redirect = buf; in ovl_check_redirect()
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| H A D | export.c | 1 // SPDX-License-Identifier: GPL-2.0-only
7 * Copyright (C) 2017-2018 CTERA Networks. All Rights Reserved.
36 * Before encoding a non-upper directory file handle from real layer N, we need
39 * "layer N connected" ancestor and verifying that all parents along the way are
42 * making that ancestor "layer N connected". For example:
50 * in ovl_lookup_real_ancestor() will not be able to lookup a connected overlay
51 * dentry from the connected lower dentry /a/b/c.
55 * /a/b. After copy up (and index) of /a/b, it will become "layer 2 connected"
58 * a connected overlay dentry will be accomplished.
62 * layer 1. If that improvement is made, then the check for "layer N connected"
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| /linux/include/linux/iio/dac/ |
| H A D | ad5791.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
12 * struct ad5791_platform_data - platform specific information
13 * @vref_pos_mv: Vdd Positive Analog Supply Volatge (mV)
15 * @use_rbuf_gain2: ext. amplifier connected in gain of two configuration
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| /linux/Documentation/ABI/testing/ |
| H A D | sysfs-bus-iio-timer-stm32 | 8 - "reset"
11 - "enable"
14 - "update"
18 - "compare_pulse"
19 The trigger output send a positive pulse
21 - "OC1REF"
23 - "OC2REF"
25 - "OC3REF"
27 - "OC4REF"
32 - "OC5REF"
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| /linux/Documentation/devicetree/bindings/bus/ |
| H A D | moxtet.txt | 4 - compatible : Should be "cznic,moxtet"
5 - #address-cells : Has to be 1
6 - #size-cells : Has to be 0
7 - spi-cpol : Required inverted clock polarity
8 - spi-cpha : Required shifted clock phase
9 - interrupts : Must contain reference to the shared interrupt line
10 - interrupt-controller : Required
11 - #interrupt-cells : Has to be 1
14 ../spi/spi-bus.txt.
17 - reg : Should be position on the Moxtet bus (how many Moxtet
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| /linux/drivers/gpu/drm/ |
| H A D | drm_of.c | 1 // SPDX-License-Identifier: GPL-2.0-only
5 #include <linux/media-bus-format.h>
25 * drm_of_crtc_port_mask - find the mask of a registered CRTC by port OF node
39 if (tmp->port == port) in drm_of_crtc_port_mask()
50 * drm_of_find_possible_crtcs - find the possible CRTCs for an encoder port
83 * drm_of_component_match_add - Add a component helper OF node match rule
101 * drm_of_component_probe - Generic probe function for a component based master
121 if (!dev->of_node) in drm_of_component_probe()
122 return -EINVAL; in drm_of_component_probe()
129 port = of_parse_phandle(dev->of_node, "ports", i); in drm_of_component_probe()
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| H A D | drm_blend.c | 43 * sub-pixel accuracy, which is scaled up to a pixel-aligned destination
54 * &drm_framebuffer, in 16.16 fixed point. Must be positive.
57 * &drm_framebuffer, in 16.16 fixed point. Must be positive.
61 * framebuffer. Must be positive.
65 * framebuffer. Must be positive.
79 * Mode object ID of the &drm_crtc this plane should be connected to.
96 * plane-wide opacity, from transparent (0) to opaque (0xffff). It can be
99 * pre-multiplied by the global alpha associated to the plane.
109 * "rotate-<degrees>":
113 * "reflect-<axis>":
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| /linux/Documentation/devicetree/bindings/display/panel/ |
| H A D | mantix,mlaf057we51-x.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/display/panel/mantix,mlaf057we51-x.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Mantix MLAF057WE51-X 5.7" 720x1440 TFT LCD panel
10 - Guido Günther <agx@sigxcpu.org>
13 Mantix MLAF057WE51 X is a 720x1440 TFT LCD panel connected using
14 a MIPI-DSI video interface.
17 - $ref: panel-common.yaml#
22 - mantix,mlaf057we51-x
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| /linux/Documentation/devicetree/bindings/net/ |
| H A D | ibm,emac.txt | 8 correct clock-frequency property.
13 - device_type : "network"
15 - compatible : compatible list, contains 2 entries, first is
16 "ibm,emac-CHIP" where CHIP is the host ASIC (440gx,
18 "ibm,emac4". For Axon, thus, we have: "ibm,emac-axon",
20 - interrupts : <interrupt mapping for EMAC IRQ and WOL IRQ>
21 - reg : <registers mapping>
22 - local-mac-address : 6 bytes, MAC address
23 - mal-device : phandle of the associated McMAL node
24 - mal-tx-channel : 1 cell, index of the tx channel on McMAL associated
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| /linux/Documentation/devicetree/bindings/iio/proximity/ |
| H A D | semtech,sx9310.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Daniel Campello <campello@chromium.org>
16 https://www.semtech.com/products/smart-sensing/sar-sensors/sx9310
19 - $ref: /schemas/iio/iio.yaml#
24 - semtech,sx9310
25 - semtech,sx9311
37 vdd-supply:
40 svdd-supply:
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| /linux/Documentation/misc-devices/ |
| H A D | spear-pcie-gadget.rst | 1 .. SPDX-License-Identifier: GPL-2.0
37 -----------------------
42 no_of_msi zero if MSI is not enabled by host. A positive value is the
53 ------------------------
61 inta write 1 to assert INTA and 0 to de-assert.
78 Program all PCIe registers in such a way that when this device is connected
83 #mount -t configfs none /Config
109 as BAR0 address then when this device will be connected to a host, it will be
138 To de-assert INTA::
170 # cd -
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| /linux/Documentation/input/devices/ |
| H A D | atarikbd.rst | 12 provides a convenient connection point for a mouse and switch-type joysticks.
13 The ikbd processor also maintains a time-of-day clock with one second
18 The ikbd communicates with the main processor over a high speed bi-directional
41 0xF8-0xFB relative mouse position records (lsbs determined by
43 0xFC time-of-day
67 ---------------------------
92 +127...-128 range, the motion is broken into multiple packets.
97 ---------------------------
104 ---------------------
120 ------------------------
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| H A D | iforce-protocol.rst | 7 Home page at `<http://web.archive.org/web/*/http://www.esil.univ-mrs.fr>`_
16 specify force effects to I-Force 2.0 devices. None of this information comes
25 send data to your I-Force device based on what you read in this document.
30 All values are hexadecimal with big-endian encoding (msb on the left). Beware,
31 values inside packets are encoded using little-endian. Bytes whose roles are
35 ------------------------
64 00 X-Axis lsb
65 01 X-Axis msb
66 02 Y-Axis lsb, or gas pedal for a wheel
67 03 Y-Axis msb, or brake pedal for a wheel
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| /linux/Documentation/devicetree/bindings/mailbox/ |
| H A D | ti,omap-mailbox.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/mailbox/ti,omap-mailbox.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Suman Anna <s-anna@ti.com>
15 external to the various processor subsystems and is connected on an
35 lines can also be routed to different processor sub-systems on DRA7xx as they
43 smaller, and the interrupt output lines are connected directly to various
49 within a SoC. The sub-mailboxes (actual communication channels) are
56 "mbox-names" (please see Documentation/devicetree/bindings/mailbox/mailbox.txt
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| /linux/Documentation/driver-api/nfc/ |
| H A D | nfc-hci.rst | 5 - Author: Eric Lapuyade, Samuel Ortiz
6 - Contact: eric.lapuyade@intel.com, samuel.ortiz@intel.com
9 -------
12 enables easy writing of HCI-based NFC drivers. The HCI layer runs as an NFC Core
17 ---
30 - one for executing commands : nfc_hci_msg_tx_work(). Only one command
32 - one for dispatching received events and commands : nfc_hci_msg_rx_work().
35 --------------------------
40 those gates have pipes connected when the hci device is set up.
41 In case the chip supports pre-opened gates and pseudo-static pipes, the driver
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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
14 All w1 slave devices must be connected to a w1 bus master device.
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/drivers/irqchip/ |
| H A D | irq-al-fic.c | 1 // SPDX-License-Identifier: GPL-2.0
49 u32 control = readl_relaxed(fic->base + AL_FIC_CONTROL); in al_fic_set_trigger()
58 gc->chip_types->handler = handler; in al_fic_set_trigger()
59 fic->state = new_state; in al_fic_set_trigger()
60 writel_relaxed(control, fic->base + AL_FIC_CONTROL); in al_fic_set_trigger()
66 struct al_fic *fic = gc->private; in al_fic_irq_set_type()
75 ret = -EINVAL; in al_fic_irq_set_type()
91 if (fic->state == AL_FIC_UNCONFIGURED) { in al_fic_irq_set_type()
93 } else if (fic->state != new_state) { in al_fic_irq_set_type()
95 fic->name, fic->state); in al_fic_irq_set_type()
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