| /linux/Documentation/timers/ |
| H A D | hrtimers.rst | 2 hrtimers - subsystem for high-resolution kernel timers
5 This patch introduces a new subsystem for high-resolution kernel timers.
9 back and forth trying to integrate high-resolution and high-precision
11 such high-resolution timer implementations in practice, we came to the
18 - the forced handling of low-resolution and high-resolution timers in
21 32-bitness assumptions, and has been honed and micro-optimized for a
23 for many years - and thus even small extensions to it easily break
26 current usage - but it is simply not suitable to be extended for
27 high-res timers.
29 - the unpredictable [O(N)] overhead of cascading leads to delays which
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| H A D | highres.rst | 2 High resolution timers and dynamic ticks design notes
8 https://www.kernel.org/doc/ols/2006/ols2006v1-pages-333-346.pdf
11 http://www.cs.columbia.edu/~nahum/w6998/papers/ols2006-hrtimers-slides.pdf
23 - hrtimer base infrastructure
24 - timeofday and clock source management
25 - clock event management
26 - high resolution timer functionality
27 - dynamic ticks
31 ---------------------------
40 - time ordered enqueueing into a rb-tree
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| /linux/Documentation/fb/ |
| H A D | viafb.modes | 10 # 640x480, 60 Hz, Non-Interlaced (25.175 MHz dotclock)
13 # Resolution 640 480
28 mode "640x480-60"
31 timings 39722 48 16 33 10 96 2 endmode mode "480x640-60"
35 # 640x480, 75 Hz, Non-Interlaced (31.50 MHz dotclock)
38 # Resolution 640 480
52 mode "640x480-75"
56 # 640x480, 85 Hz, Non-Interlaced (36.000 MHz dotclock)
59 # Resolution 640 480
73 mode "640x480-85"
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| /linux/lib/fonts/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
12 bool "Select compiled-in fonts"
29 This is the "high resolution" font for the VGA frame buffer (the one
35 Given the resolution provided by the frame buffer device, answer N
42 This is the "high resolution" font for the VGA frame buffer (the one
52 Small console font with Macintosh-style high-half glyphs. Some Mac
68 Small console font with PC-style control-character and high-half
76 Small console font with PC-style control characters and high-half
84 bool "Medium-size 6x10 font"
87 Medium-size console font. Suitable for framebuffer consoles on
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| /linux/Documentation/hwmon/ |
| H A D | ds1621.rst | 47 - Christian W. Zuckschwerdt <zany@triq.net>
48 - valuable contributions by Jan M. Sendler <sendler@sendler.de>
49 - ported to 2.6 by Aurelien Jarno <aurelien@aurel32.net>
53 ------------------
58 * 0 = active high,
62 -----------
65 both high and low temperature limits which can be user defined (i.e.
66 programmed into non-volatile on-chip registers). Temperature range is -55
68 Fahrenheit range of -67 to +257 degrees with 0.9 steps. If polarity
74 stays high until the high limit is met or exceeded. On the other hand
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| H A D | adm9240.rst | 10 Addresses scanned: I2C 0x2c - 0x2f
20 Addresses scanned: I2C 0x2c - 0x2f
24 http://pdfserv.maxim-ic.com/en/ds/DS1780.pdf
30 Addresses scanned: I2C 0x2c - 0x2f
37 - Frodo Looijaard <frodol@dds.nl>,
38 - Philip Edelbrock <phil@netroedge.com>,
39 - Michiel Rook <michiel@grendelproject.nl>,
40 - Grant Coady <gcoady.lk@gmail.com> with guidance
44 ---------
46 chip MSB 5-bit address. Each chip reports a unique manufacturer
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| H A D | chipcap2.rst | 1 .. SPDX-License-Identifier: GPL-2.0-or-later
12 Addresses scanned: -
14 …Datasheet: https://www.amphenol-sensors.com/en/telaire/humidity/527-humidity-sensors/3095-chipcap-2
18 - Javier Carrasco <javier.carrasco.cruz@gmail.com>
21 -----------
28 - Relative humidity: 0 to 100000 pcm (14-bit resolution)
29 - Temperature: -40000 to +125000 m°C (14-bit resolution)
39 might be truncated to match the 14-bit device resolution (6.1 pcm/LSB)
42 ------------
46 sysfs-Interface
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| H A D | w83793.rst | 10 Addresses scanned: I2C 0x2c - 0x2f
15 - Yuan Mu (Winbond Electronics)
16 - Rudolf Marek <r.marek@assembler.cz>
20 -----------------
36 -----------
44 sets of 6-pin CPU VID input.
47 If your motherboard maker used the reference design, the resolution of
48 voltage0-2 is 2mV, resolution of voltage3/4/5 is 16mV, 8mV for voltage6,
49 24mV for voltage7/8. Temp1-4 have a 0.25 degree Celsius resolution,
50 temp5-6 have a 1 degree Celsiis resolution.
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| H A D | tmp513.rst | 1 .. SPDX-License-Identifier: GPL-2.0
22 Eric Tremblay <etremblay@distech-controls.com>
25 -----------
28 The TMP512 (dual-channel) and TMP513 (triple-channel) are system monitors
29 that include remote sensors, a local temperature sensor, and a high-side current
31 temperatures, on-chip temperatures, and system voltage/power/current
35 -40 to + 125 degrees with a resolution of 0.0625 degree C.
40 0 to 127.5 degrees with a resolution of 0.5 degree.
44 **temp[1-4]_input**
46 **temp[1-4]_crit**
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| H A D | bt1-pvt.rst | 1 .. SPDX-License-Identifier: GPL-2.0-only
3 Kernel driver bt1-pvt
8 * Baikal-T1 PVT sensor (in SoC)
10 Prefix: 'bt1-pvt'
12 Addresses scanned: -
21 -----------
24 embedded into Baikal-T1 process, voltage and temperature sensors. PVT IP-core
29 compile-time configurable due to the hardware interface implementation
40 in alarm-less configuration the data conversion is performed by the driver
41 on demand when read operation is requested via corresponding _input-file.
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| /linux/Documentation/w1/slaves/ |
| H A D | w1_therm.rst | 16 -----------
46 in the module), it will drive the line high during the longer conversion
49 -1 if at least one sensor still in conversion, 1 if conversion is complete
61 its current resolution. Default conversion time is set by the driver according
70 Writing a resolution value (in bits) to ``w1_slave`` will change the
72 the sensor. Resolution is reset when the sensor gets power-cycled.
74 To store the current resolution in EEPROM, write ``0`` to ``w1_slave``.
78 Alternatively, resolution can be read or written using the dedicated
79 ``resolution`` entry on each device, if supported by the sensor.
81 Some non-genuine DS18B20 chips are fixed in 12-bit mode only, so the actual
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| /linux/Documentation/devicetree/bindings/iio/proximity/ |
| H A D | semtech,sx9324.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Gwendal Grignou <gwendal@chromium.org>
11 - Daniel Campello <campello@chromium.org>
17 - $ref: /schemas/iio/iio.yaml#
32 vdd-supply:
35 svdd-supply:
38 "#io-channel-cells":
41 semtech,ph0-pin:
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| /linux/include/sound/ac97/ |
| H A D | regs.h | 1 /* SPDX-License-Identifier: GPL-2.0+
33 /* range 0x28-0x3a - AUDIO AC'97 2.0 extensions */
44 /* range 0x3c-0x58 - MODEM */
54 #define AC97_GPIO_POLARITY 0x4e /* GPIO Pin Polarity/Type, 0=low, 1=high active */
59 /* range 0x5a-0x7b - Vendor Specific */
62 /* range 0x60-0x6f (page 1) - extended codec registers */
108 #define AC97_BC_16BIT_DAC 0x0000 /* 16-bit DAC resolution */
109 #define AC97_BC_18BIT_DAC 0x0040 /* 18-bit DAC resolution */
110 #define AC97_BC_20BIT_DAC 0x0080 /* 20-bit DAC resolution */
112 #define AC97_BC_16BIT_ADC 0x0000 /* 16-bit ADC resolution */
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| /linux/drivers/iio/trigger/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
7 menu "Triggers - standalone"
10 tristate "High resolution timer trigger"
13 Provides a frequency based IIO trigger using high resolution
17 module will be called iio-trig-hrtimer.
26 module will be called iio-trig-interrupt.
29 tristate "STM32 Low-Power Timer Trigger"
32 Select this option to enable STM32 Low-Power Timer Trigger.
37 module will be called stm32-lptimer-trigger.
46 module will be called stm32-timer-trigger.
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| /linux/drivers/clocksource/ |
| H A D | scx200_hrt.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
6 * high-resolution timer. The Geode SC-1100 (at least) has a buggy
8 * given as a boot-arg. In its absence, the Generic Timekeeping code
9 * will detect and de-rate the bad TSC, allowing this timer to take
12 * Based on work by John Stultz, and Ted Phelps (in a 2.6.12-rc6 patch)
29 MODULE_PARM_DESC(ppm, "+-adjust to actual XO freq (ppm)");
37 #define HR_TM27MPD (1 << 2) /* 1 turns off input clock (power-down) */
63 return -ENODEV; in init_hrt_clocksource()
65 /* Reserve the timer's ISA io-region for ourselves */ in init_hrt_clocksource()
68 "NatSemi SCx200 High-Resolution Timer")) { in init_hrt_clocksource()
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| /linux/tools/perf/pmu-events/arch/common/common/ |
| H A D | software.json | 4 "EventName": "cpu-clock",
5 "BriefDescription": "Per-CPU high-resolution timer based event",
10 "EventName": "task-clock",
11 "BriefDescription": "Per-task high-resolution timer based event",
17 "BriefDescription": "Number of page faults [This event is an alias of page-faults]",
22 "EventName": "page-faults",
28 "EventName": "context-switches",
35 "BriefDescription": "Number of context switches [This event is an alias of context-switches]",
40 "EventName": "cpu-migrations",
47 …: "Number of times a process has migrated to a new CPU [This event is an alias of cpu-migrations]",
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| /linux/Documentation/iio/ |
| H A D | ad7380.rst | 1 .. SPDX-License-Identifier: GPL-2.0-only
23 * `AD7380-4 <https://www.analog.com/en/products/ad7380-4.html>`_
24 * `AD7381-4 <https://www.analog.com/en/products/ad7381-4.html>`_
25 * `AD7383-4 <https://www.analog.com/en/products/ad7383-4.html>`_
26 * `AD7384-4 <https://www.analog.com/en/products/ad7384-4.html>`_
27 * `AD7386-4 <https://www.analog.com/en/products/ad7386-4.html>`_
28 * `AD7387-4 <https://www.analog.com/en/products/ad7387-4.html>`_
29 * `AD7388-4 <https://www.analog.com/en/products/ad7388-4.html>`_
30 * `AD7389-4 <https://www.analog.com/en/products/ad7389-4.html>`_
31 * `ADAQ4370-4 <https://www.analog.com/en/products/adaq4370-4.html>`_
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| /linux/Documentation/ABI/testing/ |
| H A D | sysfs-driver-w1_therm | 5 (RW) read or write TH and TL (Temperature High an Low) alarms.
7 (typical -55 degC to 125 degC), if not values will be trimmed
11 master level, refer to Documentation/w1/w1-generic.rst for
41 * '-xx': xx is kernel error when reading power status
47 What: /sys/bus/w1/devices/.../resolution
51 (RW) get or set the device resolution (on supported devices,
52 if not, this entry is not present). Note that the resolution
55 values after power-on. Read or write are :
57 * '9..14': device resolution in bit
58 or resolution to set in bit
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| /linux/include/drm/ |
| H A D | drm_modes.h | 3 * Copyright © 2007-2008 Dave Airlie
4 * Copyright © 2007-2008 Intel Corporation
46 * enum drm_mode_status - hardware support status of a mode
62 * @MODE_CLOCK_HIGH: clock required is too high
80 * @MODE_ONE_SIZE: only one resolution is supported
129 MODE_STALE = -3,
130 MODE_BAD = -2,
131 MODE_ERROR = -1
142 * DRM_MODE_RES_MM - Calculates the display size from resolution and DPI
143 * @res: The resolution in pixel
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| /linux/Documentation/devicetree/bindings/display/bridge/ |
| H A D | ti,dlpc3433.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Jagan Teki <jagan@amarulasolutions.com>
11 - Christopher Vollo <chris@renewoutreach.org>
15 for processing high resolution DMD based projectors.
21 It supports upto 720p resolution with 60 and 120 Hz refresh
30 - 0x1b
31 - 0x1d
33 enable-gpios:
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| /linux/kernel/time/ |
| H A D | hrtimer.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright(C) 2005-2006, Thomas Gleixner <tglx@linutronix.de>
4 * Copyright(C) 2005-2007, Red Hat, Inc., Ingo Molnar
5 * Copyright(C) 2006-2007 Timesys Corp., Thomas Gleixner
7 * High-resolution kernel timers
9 * In contrast to the low-resolution timeout API, aka timer wheel,
10 * hrtimers provide finer resolution and accuracy depending on system
50 #include "tick-internal.h"
54 * cpu_base->active
57 #define HRTIMER_ACTIVE_HARD ((1U << MASK_SHIFT) - 1)
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| /linux/drivers/iio/resolver/ |
| H A D | ad2s1210.c | 1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright (c) 2010-2010 Analog Devices Inc.
11 * ----------------------------|------|-------------------------------------------
16 * LOT High Threshold | 0x8D | events/in_angl1_thresh_rising_value
22 * Encoder resolution | D3:2 | *not implemented*
23 * Resolution | D1:0 | *device tree: assigned-resolution-bits*
27 * [1]: The value written to the LOT low register is high value minus the
34 * ----------------------------------------|----|---------------------------------
151 /** Available raw hysteresis values based on resolution. */
153 /* adi,fixed-mode property - only valid when mode_gpios == NULL. */
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| /linux/drivers/media/rc/ |
| H A D | ene_ir.h | 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
11 #define ENE_STATUS 0 /* hardware status - unused */
48 /* high parts of samples for fan input (8 samples)*/
101 /* Knobs for protocol decoding - will document when/if will use them */
108 /* Actual register which contains RLC RX data - read by firmware */
112 /* RLC configuration - sample period (1us resolution) + idle mode */
125 * Low nibble - number of carrier pulses to average
126 * High nibble - number of initial carrier pulses to discard
130 /* detected RX carrier period (resolution: 500 ns) */
134 /* detected RX carrier pulse width (resolution: 500 ns) */
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| /linux/include/linux/ |
| H A D | hrtimer_defs.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
12 * The resolution of the clocks. The resolution value is returned in
15 * this resolution values.
36 * struct hrtimer_clock_base - the timer base for a specific clock
69 * struct hrtimer_cpu_base - the per cpu clock bases
75 * @hres_active: State of high resolution mode
78 * @softirq_activated: displays, if the softirq is raised - update of softirq
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| /linux/Documentation/devicetree/bindings/leds/ |
| H A D | leds-lm3697.txt | 1 * Texas Instruments - LM3697 Highly Efficient White LED Driver
3 The LM3697 11-bit LED driver provides high-
10 - compatible:
12 - reg : I2C slave address
13 - #address-cells : 1
14 - #size-cells : 0
17 - enable-gpios : GPIO pin to enable/disable the device
18 - vled-supply : LED supply
21 - reg : 0 - LED is Controlled by bank A
22 1 - LED is Controlled by bank B
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