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| /Documentation/ABI/stable/ |
| D | sysfs-bus-mhi | 6 using a BHI (Boot Host Interface) register read after at least
8 without having the device power on at least once, the file will
18 at least one attempt to power up the device has been done. If
19 read without having the device power on at least once, the file
28 a reset of last resort, and will require a complete re-init.
30 non-responsive, or as a means of loading new firmware as a
37 Description: Writing a non-zero value to this file will force devices to
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| D | sysfs-bus-usb | 8 not the "USB-Persist" facility is enabled for the device. For
12 For more information, see Documentation/driver-api/usb/persist.rst.
27 The autosuspend delay for newly-created devices is set to
37 connected to the machine. This file is read-only.
49 active, i.e. not in a suspended state. This file is read-only.
63 What: /sys/bus/usb/devices/<busnum>-<port[.port]>...:<config num>-<interface num>/supports_autosus…
77 git://git.moblin.org/users/sarah/usb-pm-tool/
91 KernelVersion: since at least 2.6.18
98 KernelVersion: since at least 2.6.18
101 device. Writing 0 or -1 to bConfigurationValue will reset the
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| /Documentation/driver-api/media/drivers/ |
| D | rkisp1.rst | 1 .. SPDX-License-Identifier: GPL-2.0
7 ------------------------------
12 - V10: used at least in rk3288 and rk3399
13 - V11: declared in the original vendor code, but not used
14 - V12: used at least in rk3326 and px30
15 - V13: used at least in rk1808
16 - V20: used in rk3568 and beyond
29 -----------------------
31 - V12 supports a new CSI-host implementation but can still
33 - The module for lens shading correction got changed
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| /Documentation/devicetree/bindings/iio/adc/ |
| D | fsl,imx25-gcq.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/iio/adc/fsl,imx25-gcq.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
14 - Jonathan Cameron <jic23@kernel.org>
18 const: fsl,imx25-gcq
26 vref-ext-supply:
29 Required when at least one subnode uses the this reference.
31 vref-xp-supply:
34 Required when at least one subnode uses this reference.
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| /Documentation/userspace-api/media/mediactl/ |
| D | media-types.rst | 1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _media-controller-types:
10 .. _media-entity-functions:
11 .. _MEDIA-ENT-F-UNKNOWN:
12 .. _MEDIA-ENT-F-V4L2-SUBDEV-UNKNOWN:
13 .. _MEDIA-ENT-F-IO-V4L:
14 .. _MEDIA-ENT-F-IO-VBI:
15 .. _MEDIA-ENT-F-IO-SWRADIO:
16 .. _MEDIA-ENT-F-IO-DTV:
17 .. _MEDIA-ENT-F-DTV-DEMOD:
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| D | media-request-ioc-queue.rst | 1 .. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later
13 MEDIA_REQUEST_IOC_QUEUE - Queue a request
31 If the media device supports :ref:`requests <media-request-api>`, then
35 :ref:`polled <request-func-poll>` to wait for the request to complete.
51 A request must contain at least one buffer, otherwise this ioctl will
57 On success 0 is returned, on error -1 and the ``errno`` variable is set
59 :ref:`Generic Error Codes <gen-errors>` chapter.
67 to have at least one buffer. This can also be returned if some required
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| /Documentation/userspace-api/media/rc/ |
| D | lirc-set-transmitter-mask.rst | 1 .. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later
13 LIRC_SET_TRANSMITTER_MASK - Enables send codes on a given set of transmitters
29 Mask with channels to enable tx. Channel 0 is the least significant bit.
35 :ref:`LIRC_CAN_SET_TRANSMITTER_MASK <LIRC-CAN-SET-TRANSMITTER-MASK>` is
40 encoded by the least significant bit and so on.
49 On success 0 is returned, on error -1 and the ``errno`` variable is set
51 :ref:`Generic Error Codes <gen-errors>` chapter.
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| /Documentation/devicetree/bindings/sound/ |
| D | amlogic,axg-sound-card.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/sound/amlogic,axg-sound-card.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Jerome Brunet <jbrunet@baylibre.com>
13 - $ref: sound-card-common.yaml#
17 const: amlogic,axg-sound-card
19 audio-aux-devs:
20 $ref: /schemas/types.yaml#/definitions/phandle-array
23 audio-widgets:
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| D | amlogic,gx-sound-card.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/sound/amlogic,gx-sound-card.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Jerome Brunet <jbrunet@baylibre.com>
13 - $ref: sound-card-common.yaml#
18 - const: amlogic,gx-sound-card
20 audio-aux-devs:
21 $ref: /schemas/types.yaml#/definitions/phandle-array
24 audio-widgets:
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| /Documentation/ABI/testing/ |
| D | sysfs-class-net-cdc_ncm | 10 as-is, without any padding, and are terminated with a
14 back-to-back without any interleaving short USB
48 least one max sized datagram plus headers.
64 least one max sized datagram plus headers.
82 The following read-only attributes all represent fields of the
87 quoted from table 6-3 of CDC NCM: "NTB Parameter Structure".
94 - Bit 0: 16-bit NTB supported (set to 1)
95 - Bit 1: 32-bit NTB supported
96 - Bits 2 – 15: reserved (reset to zero; must be ignored by host)
127 be a power of 2, and shall be at least 4.
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| D | debugfs-wilco-ec | 9 - ENTRY_TO_FACT_MODE in BIT(0)
10 - SPI_CHROME_SEL in BIT(1)
24 For writing, bytes 0-1 indicate the message type, one of enum
26 request, starting at MBOX[0]. At least three bytes are required
27 for writing, two for the type and at least a single byte of
|
| /Documentation/hwmon/ |
| D | adc128d818.rst | 17 -----------
27 Measurements are guaranteed between -55 and +125 degrees. The temperature
39 is read at least once. This means that the cause for the alarm may
41 caches the alarm status for each sensor until it is at least reported
|
| D | gl518sm.rst | 21 - Frodo Looijaard <frodol@dds.nl>,
22 - Kyösti Mälkki <kmalkki@cc.hut.fi>
23 - Hong-Gunn Chew <hglinux@gunnet.org>
24 - Jean Delvare <jdelvare@suse.de>
27 -----------
34 This driver supports the Genesys Logic GL518SM chip. There are at least
46 situation. Measurements are guaranteed between -10 degrees and +110
47 degrees, with a accuracy of +/-3 degrees.
73 is read at least once (except for temperature alarms). This means that the
77 you can easily miss once-only alarms.
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| /Documentation/admin-guide/device-mapper/ |
| D | striped.rst | 2 dm-stripe
5 Device-Mapper's "striped" target is used to create a striped (i.e. RAID-0)
15 Size of each chunk of data. Must be at least as
18 Full pathname to the underlying block-device, or a
19 "major:minor" device-number.
32 #!/usr/bin/perl -w
34 # will be called "stripe_dev" and have a chunk-size of 128k.
43 die("Specify at least one device\n");
46 $min_dev_size = `blockdev --getsz $devs[0]`;
48 my $this_size = `blockdev --getsz $devs[$i]`;
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| /Documentation/admin-guide/ |
| D | syscall-user-dispatch.rst | 1 .. SPDX-License-Identifier: GPL-2.0
8 ----------
11 calls of only a part of their process - the part that has the
12 incompatible code - while being able to execute native syscalls without
21 multiple-personality application can then flip the switch without
35 architectures, like x86, but at least for Wine, syscalls issued by
37 since they are quite rare, at least for modern gaming applications.
40 non-native applications, it must function on syscalls whose invocation
49 ---------
66 interface should make sure that at least the signal trampoline code is
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| D | abi-stable.rst | 8 for at least 2 years.
13 .. kernel-abi:: ABI/stable
|
| /Documentation/devicetree/bindings/mux/ |
| D | gpio-mux.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/mux/gpio-mux.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: GPIO-based multiplexer controller
10 - Peter Rosin <peda@axentia.se>
17 multiplexer GPIO pins, where the first pin is the least significant
22 const: gpio-mux
24 mux-gpios:
26 List of gpios used to control the multiplexer, least significant bit first.
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| /Documentation/devicetree/bindings/display/tilcdc/ |
| D | panel.txt | 1 Device-Tree bindings for tilcdc DRM generic panel output driver
4 - compatible: value should be "ti,tilcdc,panel".
5 - panel-info: configuration info to configure LCDC correctly for the panel
6 - ac-bias: AC Bias Pin Frequency
7 - ac-bias-intrpt: AC Bias Pin Transitions per Interrupt
8 - dma-burst-sz: DMA burst size
9 - bpp: Bits per pixel
10 - fdd: FIFO DMA Request Delay
11 - sync-edge: Horizontal and Vertical Sync Edge: 0=rising 1=falling
12 - sync-ctrl: Horizontal and Vertical Sync: Control: 0=ignore
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| /Documentation/userspace-api/media/cec/ |
| D | cec-pin-error-inj.rst | 1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
9 has low-level support for the CEC bus. Most hardware today will have
10 high-level CEC support where the hardware deals with driving the CEC bus,
19 Currently only the cec-gpio driver (when the CEC line is directly
20 connected to a pull-up GPIO line) and the AllWinner A10/A20 drm driver
25 now an ``error-inj`` file.
32 With ``cat error-inj`` you can see both the possible commands and the current
35 $ cat /sys/kernel/debug/cec/cec0/error-inj
38 # rx-clear clear all rx error injections
39 # tx-clear clear all tx error injections
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| /Documentation/devicetree/bindings/input/ |
| D | gpio-decoder.txt | 4 - compatible: should be "gpio-decoder"
5 - gpios: a spec of gpios (at least two) to be decoded to a number with
9 - decoder-max-value: Maximum possible value that can be reported by
11 - linux,axis: the input subsystem axis to map to (ABS_X/ABS_Y).
15 gpio-decoder0 {
16 compatible = "gpio-decoder";
22 decoder-max-value = <9>;
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| /Documentation/devicetree/bindings/hwmon/ |
| D | npcm750-pwm-fan.txt | 3 The Nuvoton BMC NPCM7XX supports 8 Pulse-width modulation (PWM)
6 The Nuvoton BMC NPCM8XX supports 12 Pulse-width modulation (PWM)
9 Required properties for pwm-fan node
10 - #address-cells : should be 1.
11 - #size-cells : should be 0.
12 - compatible : "nuvoton,npcm750-pwm-fan" for Poleg NPCM7XX.
13 : "nuvoton,npcm845-pwm-fan" for Arbel NPCM8XX.
14 - reg : specifies physical base address and size of the registers.
15 - reg-names : must contain:
18 - clocks : phandle of reference clocks.
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| /Documentation/driver-api/nvdimm/ |
| D | firmware-activate.rst | 1 .. SPDX-License-Identifier: GPL-2.0
10 involves a reboot because it has implications for in-flight memory
11 transactions. However, reboots are disruptive and at least the Intel
24 - idle:
27 - armed:
28 At least one device is armed
30 - busy:
34 - overflow:
55 assume the risk of racing firmware update with in-flight device and
59 The libnvdimm memory-device / DIMM object, nmemX, implements
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| /Documentation/devicetree/bindings/media/xilinx/ |
| D | xlnx,v-tc.txt | 2 ------------------------------------
9 - compatible: Must be "xlnx,v-tc-6.1".
11 - reg: Physical base address and length of the registers set for the device.
13 - clocks: Must contain a clock specifier for the VTC core and timing
18 - xlnx,detector: The VTC has a timing detector
19 - xlnx,generator: The VTC has a timing generator
21 At least one of the xlnx,detector and xlnx,generator properties must be
28 compatible = "xlnx,v-tc-6.1";
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| /Documentation/arch/x86/ |
| D | booting-dt.rst | 1 .. SPDX-License-Identifier: GPL-2.0
4 ------------------
11 The physical pointer to the device-tree block is passed via setup_data
12 which requires at least boot protocol 2.09.
17 This device-tree is used as an extension to the "boot page". As such it
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| /Documentation/devicetree/bindings/display/armada/ |
| D | marvell,dove-lcd.txt | 4 - compatible: value should be "marvell,dove-lcd".
5 - reg: base address and size of the LCD controller
6 - interrupts: single interrupt number for the LCD controller
7 - port: video output port with endpoints, as described by graph.txt
11 - clocks: as described by clock-bindings.txt
12 - clock-names: as described by clock-bindings.txt
13 "axiclk" - axi bus clock for pixel clock
14 "plldivider" - pll divider clock for pixel clock
15 "ext_ref_clk0" - external clock 0 for pixel clock
16 "ext_ref_clk1" - external clock 1 for pixel clock
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