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/linux/Documentation/devicetree/bindings/timestamp/
H A Dhte-consumer.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/timestamp/hte-consumer.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Dipen Patel <dipenp@nvidia.com>
16 $ref: /schemas/types.yaml#/definitions/phandle-array
23 timestamp-names:
24 $ref: /schemas/types.yaml#/definitions/string-array
27 timestamp property.
30 timestamp-names: [ timestamps ]
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/linux/drivers/firewire/
H A Dcore-transaction.c1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Copyright (C) 2004-2006 Kristian Hoegsberg <krh@bitplanet.net>
13 #include <linux/firewire-constants.h>
31 #include "packet-header-definitions.h"
32 #include "phy-packet-definitions.h"
41 if (t->is_split_transaction) in try_cancel_split_timeout()
42 return timer_delete(&t->split_timeout_timer); in try_cancel_split_timeout()
47 // card->transactions.lock must be acquired in advance.
50 list_del_init(&entry->link); in remove_transaction_entry()
51 card->transactions.tlabel_mask &= ~(1ULL << entry->tlabel); in remove_transaction_entry()
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/linux/Documentation/trace/
H A Dmmiotrace.rst2 In-kernel memory-mapped I/O tracing
11 Injection Test Harness. In Dec 2006 - Jan 2007, using the code from Intel,
15 Mmiotrace was built for reverse engineering any memory-mapped IO device with
19 Out-of-tree mmiotrace was originally modified for mainline inclusion and
24 -----------
29 is on-line, therefore mmiotrace takes all but one CPU off-line during run-time
30 activation. You can re-enable CPUs by hand, but you have been warned, there
35 ---------------------
38 $ mount -t debugfs debugfs /sys/kernel/debug
48 -----
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H A Deprobetrace.rst1 .. SPDX-License-Identifier: GPL-2.0
4 Eprobe - Event-based Probe Tracing
9 - Written for v6.17
24 ----
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/linux/drivers/hte/
H A Dhte-tegra194-test.c1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2021-2022 NVIDIA Corporation
20 * hardware timestamp on gpio_in and specified LIC IRQ lines.
29 * compatible = "nvidia,tegra194-hte-test";
30 * in-gpio = <&gpio_aon TEGRA194_AON_GPIO(BB, 1)>;
31 * out-gpio = <&gpio_aon TEGRA194_AON_GPIO(BB, 0)>;
34 * timestamp-names = "hte-gpio", "hte-i2c-irq";
39 * - Load test driver.
40 * - For the GPIO, at regular interval gpio_out pin toggles triggering
43 * - For the LIC IRQ line, it uses 0x19 interrupt which is i2c controller 1.
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/linux/Documentation/filesystems/
H A Dvfat.rst10 mount -t vfat /dev/fd0 /mnt
42 **-20**: If current process is in group of file's group ID,
43 you can change timestamp.
45 **-2**: Other users can change timestamp.
69 There is also an option of doing UTF-8 translations
76 UTF-8 is the filesystem safe version of Unicode that
79 If 'uni_xlate' gets set, UTF-8 gets disabled.
152 from each timestamp to convert it to UTC used internally by
156 cases in presence of DST - time stamps in a different DST
176 FAT has the ATTR_RO (read-only) attribute. On Windows,
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H A Dadfs.rst1 .. SPDX-License-Identifier: GPL-2.0
4 Acorn Disc Filing System - ADFS
8 -----------------------------
12 - new maps
13 - new directories or big directories
17 - E and E+, with or without boot block
18 - F and F+
29 directory updates, specifically updating the access mode and timestamp.
32 ----------------------
49 ------------------------------------------------
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/linux/scripts/dtc/
H A Dof_unittest_expect2 # SPDX-License-Identifier: GPL-2.0
40 $expect =~ s/^.*?>>//; # '?' is non-greedy, minimal match
54 if ($got =~ /^[+-]*[0-9]+/) {
55 $got =~ s/^[+-]*[0-9]+//;
60 if ($got =~ /^(0x)*[0-9a-f]+/) {
61 $got =~ s/^(0x)*[0-9a-f]+//;
100 -h print program usage
101 --help print program usage
102 --hide-expect suppress output of EXPECTed lines
103 --line-num report line number of CONSOLE_LOG
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/linux/Documentation/devicetree/bindings/net/
H A Dti,icssg-prueth.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/net/ti,icssg-pruet
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/linux/arch/nios2/boot/dts/
H A D10m50_devboard.dts1 // SPDX-License-Identifier: GPL-2.0-only
6 /dts-v1/;
10 compatible = "altr,niosii-max10";
11 #address-cells = <1>;
12 #size-cells = <1>;
15 #address-cells = <1>;
16 #size-cells = <0>;
20 compatible = "altr,nios2-1.1";
22 interrupt-controller;
23 #interrupt-cells = <1>;
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/linux/tools/thermal/thermometer/
H A Dthermometer.82 # SPDX-License-Identifier: GPL-2.0
4 \fBthermometer\fP - A thermal profiling tool
23 the thermal zone names and the desired sampling period. A thermal zone
44 The \fB-h, --help\fP option shows a short usage help
46 The \fB-o <dir>, --output <dir>\fP option defines the output directory to put the
49 The \fB-c <config>, --config <config>\fP option specifies the configuration file to use
51 The \fB-d <seconds>, --duration <seconds>\fP option specifies the duration of the capture
53 The \fB-l <loglevel>, --loglevel <loglevel>\fP option sets the loglevel [DEBUG,INFO,NOTICE,WARN,ERR…
55 The \fB-p <string>, --postfix <string>\fP option appends \fBstring\fP at the end of the capture fil…
57 The \fB-s, --syslog\fP option sets the output to syslog, default is \fBstdout\fP
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/linux/arch/arm/boot/dts/nxp/imx/
H A Dimx7d-flex-concentrator.dts1 // SPDX-License-Identifier: GPL-2.0
9 /dts-v1/;
11 #include "imx7d-tqma7.dtsi"
14 /delete-node/ &ds1339;
18 compatible = "kam,imx7d-flex-concentrator", "fsl,imx7d";
22 /* 1024 MB - TQMa7D board configuration */
26 reg_usb_otg2_vbus: regulator-usb-otg2-vbus {
27 compatible = "regulator-fixed";
28 regulator-name = "VBUS_USBOTG2";
29 regulator-min-microvolt = <5000000>;
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/linux/tools/perf/Documentation/
H A Dperf-diff.txt1 perf-diff(1)
5 ----
6 perf-diff - Read perf.data files and display the differential profile
9 ---
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H A Dperf-record.txt1 perf-record(1)
5 ----
6 perf-record - Run a command and record its profile into perf.data
9 --------
11 'perf record' [-e <EVENT> | --event=EVENT] [-a] <command>
12 'perf record' [-e <EVENT> | --event=EVENT] [-a] \-- <command> [<options>]
15 -----------
17 from it, into perf.data - without displaying anything.
23 -------
27 -e::
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/linux/drivers/iio/accel/
H A Dbmc150-accel-core.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * 3-axis accelerometer driver supporting many Bosch-Sensortec chips
26 #include "bmc150-accel.h"
209 struct device *dev = regmap_get_device(data->regmap); in bmc150_accel_set_mode()
213 int dur_val = -1; in bmc150_accel_set_mode()
228 return -EINVAL; in bmc150_accel_set_mode()
235 ret = regmap_write(data->regmap, BMC150_ACCEL_REG_PMU_LPW, lpw_bits); in bmc150_accel_set_mode()
253 ret = regmap_write(data->regmap, in bmc150_accel_set_bw()
259 data->bw_bits = in bmc150_accel_set_bw()
265 return -EINVAL; in bmc150_accel_set_bw()
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/linux/Documentation/sound/codecs/
H A Dcs35l56.rst1 .. SPDX-License-Identifier: GPL-2.0-only
14 The high-level summary of this document is:
30 ---------------------------------
43 *For systems using HDA*: sound/hda/codecs/side-codecs/cs35l56_hda.c
52 Firmware is distributed in the linux-firmware repository:
53 https://gitlab.com/kernel-firmware/linux-firmware.git
72 ---------------------------
79 firmware files in linux-firmware for these amplifiers. Firmware files are
82 Cirrus Logic submits files for known laptops to the upstream linux-firmware
85 to linux-firmware. You may need to upgrade to a newer release of
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/linux/scripts/
H A Dlink-vmlinux.sh2 # SPDX-License-Identifier: GPL-2.0
9 # (not within --whole-archive), and do not require symbol indexes added.
14 # +--< vmlinux.a
16 # +--< $(KBUILD_VMLINUX_LIBS)
17 # | +--< lib/lib.a + more
19 # +-< ${kallsymso} (see description in KALLSYMS section)
21 # vmlinux version (uname -v) cannot be updated during normal
22 # descending-into-subdirs phase since we do not yet know if we need to
29 set -e
37 grep -q "^$1=y" include/config/auto.conf
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/linux/include/linux/
H A Dpstore.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Persistent Storage - pstore.h
35 /* PPC64-specific partition types */
51 * struct pstore_record - details of a pstore record entry
54 * @id: per-type unique identifier for record
55 * @time: timestamp of the record
61 * kfree()d by the pstore core if non-NULL
89 * struct pstore_info - backend pstore driver structure
109 * @data: backend-private pointer passed back during callbacks
119 * Returns 0 on success, and non-zero on error.
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/linux/drivers/gpu/drm/msm/disp/
H A Dmsm_disp_snapshot.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (c) 2020-2021, The Linux Foundation. All rights reserved.
20 #include <linux/dma-buf.h>
38 * struct msm_disp_state - structure to store current dpu state
43 * @time: timestamp at which the coredump was captured
57 * struct msm_disp_state_block - structure to store each hardware block state
73 * msm_disp_snapshot_init - initializ
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/linux/drivers/iio/gyro/
H A Dmpu3050-core.c1 // SPDX-License-Identifier: GPL-2.0-only
39 * Register map: anything suffixed *_H is a big-endian high byte and always
76 /* Bits 8-11 select memory bank */
163 * Fullscale precision is (for finest precision) +/- 250 deg/s, so the full
175 * Regulator names
184 if (mpu3050->lpf == MPU3050_DLPF_CFG_256HZ_NOLPF2) in mpu3050_get_freq()
188 freq /= (mpu3050->divisor + 1); in mpu3050_get_freq()
200 ret = regmap_set_bits(mpu3050->map, MPU3050_PWR_MGM, in mpu3050_start_sampling()
205 /* Turn on the Z-axis PLL */ in mpu3050_start_sampling()
206 ret = regmap_update_bits(mpu3050->map, MPU3050_PWR_MGM, in mpu3050_start_sampling()
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/linux/drivers/net/ethernet/amd/xgbe/
H A Dxgbe.h1 // SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-3-Clause)
3 * Copyright (c) 2014-2025, Advanced Micro Devices, Inc.
11 #include <linux/dma-mapping.h>
28 #define XGBE_DRV_NAME "amd-xgbe"
42 #define XGBE_TX_MAX_BUF_SIZE (0x3fff & ~(64 - 1))
49 * - Maximum number of SKB frags
50 * - Maximum descriptors for contiguous TSO/GSO packet
51 * - Possible context descriptor
52 * - Possible TSO header descriptor
66 /* DMA cache settings - Outer sharable, write-back, write-allocate */
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/linux/Documentation/dev-tools/
H A Dgpio-sloppy-logic-analyzer.rst1 .. SPDX-License-Identifier: GPL-2.0
12 This document briefly describes how to run the GPIO based in-kernel sloppy
22 Another feature is to snoop on on-chip peripherals if the I/O cells of these
26 control subsystem such pin controllers are called "non-strict": a certain pin
31 non-deterministic code paths and non-maskable interrupts. It is called 'sloppy'
47 i2c-analyzer {
48 compatible = "gpio-sloppy-logic-analyzer";
49 probe-gpios = <&gpio6 21 GPIO_OPEN_DRAIN>, <&gpio6 4 GPIO_OPEN_DRAIN>;
50 probe-names = "SCL", "SDA";
62 ``tools/gpio/gpio-sloppy-logic-analyzer``. Besides checking parameters more
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/linux/Documentation/userspace-api/media/v4l/
H A Dhist-v4l2.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
4 .. _hist-v4l2:
21 1998-08-20: First version.
23 1998-08-27: The :c:func:`select()` function was introduced.
25 1998-09-10: New video standard interface.
27 1998-09-18: The ``VIDIOC_NONCAP`` ioctl was replaced by the otherwise
36 1998-09-28: Revamped video standard. Made video controls individually
39 1998-10-02: The ``id`` field was removed from
47 1998-11-08: Many minor changes. Most symbols have been renamed. Some
50 1998-11-12: The read/write direction of some ioctls was misdefined.
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/linux/Documentation/trace/coresight/
H A Dcoresight-etm4x-reference.rst11 ---------------------------
17 ETMv4 registers that they effect. Note the register names are given without
20 ----
37 ----
47 ----
52 - > 0 : Programs up the hardware with the current values held in the driver
55 - = 0 : disable trace hardware.
60 ----
72 ----
77 When FEAT_TRF is implemented, value of TRFCR_ELx.TS used for trace session. Otherwise -1
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/linux/fs/xfs/libxfs/
H A Dxfs_format.h1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
12 * This header file defines all the on-disk format definitions for
26 * Fits into a sector-sized buffer at address 0 of each allocation group.
31 #define XFS_SB_VERSION_2 2 /* 6.2 - attributes */
32 #define XFS_SB_VERSION_3 3 /* 6.2 - new inode version */
33 #define XFS_SB_VERSION_4 4 /* 6.2+ - bitmask version */
47 #define XFS_SB_VERSION_BORGBIT 0x4000 /* ASCII only case-insen
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