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/Documentation/ABI/testing/
Dsysfs-bus-iio-thermocouple3 Contact: linux-iio@vger.kernel.org
14 Contact: linux-iio@vger.kernel.org
16 Open-circuit fault. The detection of open-circuit faults,
Dsysfs-class-led-flash55 Flash faults are re-read after strobing the flash. Possible
58 * led-over-voltage
61 * flash-timeout-exceeded
65 * controller-over-temperature
68 * controller-short-circuit
69 the short circuit protection
71 * led-power-supply-over-current
75 * indicator-led-fault
77 a short or open circuit condition on the indicator LED
78 * led-under-voltage
[all …]
/Documentation/devicetree/bindings/iio/temperature/
Dmicrochip,mcp9600.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Andrew Hepp <andrew.hepp@ahepp.dev>
13 https://ww1.microchip.com/downloads/en/DeviceDoc/MCP960X-Data-Sheet-20005426.pdf
26 interrupt-names:
31 - open-circuit
32 - short-circuit
33 - alert1
34 - alert2
[all …]
Dadi,ltc2983.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Analog Devices LTC2983, LTC2986, LTM2985 Multi-sensor Temperature system
10 - Nuno Sá <nuno.sa@analog.com>
13 Analog Devices LTC2983, LTC2984, LTC2986, LTM2985 Multi-Sensor Digital
16 https://www.analog.com/media/en/technical-documentation/data-sheets/2983fc.pdf
17 https://www.analog.com/media/en/technical-documentation/data-sheets/2984fb.pdf
18 https://www.analog.com/media/en/technical-documentation/data-sheets/29861fa.pdf
19 https://www.analog.com/media/en/technical-documentation/data-sheets/ltm2985.pdf
[all …]
/Documentation/devicetree/bindings/gpio/
Dgpio-delay.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/gpio/gpio-delay.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Alexander Stein <linux@ew.tq-group.com>
14 is delayed by some external setup, e.g. RC circuit.
16 +----------+ +-----------+
23 | [IOx|-------| |--+-----|-----+ |
26 +----------+ --- C +-----------+
27 ---
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/Documentation/devicetree/bindings/power/supply/
Dbattery.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Sebastian Reichel <sre@kernel.org>
14 In smart batteries, these are typically stored in non-volatile memory
16 no appropriate non-volatile memory, or it is unprogrammed/incorrect.
27 Batteries must be referenced by chargers and/or fuel-gauges using a phandle.
28 The phandle's property should be named "monitored-battery".
32 const: simple-battery
34 device-chemistry:
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/Documentation/userspace-api/media/dvb/
Dfe-diseqc-send-burst.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
13 FE_DISEQC_SEND_BURST - Sends a 22KHz tone burst for 2x1 mini DiSEqC satellite selection.
26 File descriptor returned by :c:func:`open()`.
39 `Digital Satellite Equipment Control (DiSEqC) - Simple "ToneBurst" Detection Circuit specification.…
46 On error -1 is returned, and the ``errno`` variable is set
50 :ref:`Generic Error Codes <gen-errors>` chapter.
Dintro.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
17 part I of the MPEG2 specification ISO/IEC 13818 (aka ITU-T H.222), i.e
19 meant by a packetized elementary stream (PES) or an I-frame.
23 - European standards (DVB): http://www.dvb.org and/or http://www.etsi.org.
24 - American standards (ATSC): https://www.atsc.org/standards/
25 - Japanese standards (ISDB): http://www.dibeg.org/
44 based on open standards, Nokia and Convergence made it available to all
65 .. kernel-figure:: dvbstb.svg
71 A Digital TV card or set-top-box (STB) usually consists of the
76 antenna or directly from cable. The frontend down-converts and
[all …]
/Documentation/devicetree/bindings/watchdog/
Dlinux,wdt-gpio.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/watchdog/linux,wdt-gpio.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: GPIO-controlled Watchdog
10 - Guenter Roeck <linux@roeck-us.net>
11 - Robert Marko <robert.marko@sartura.hr>
15 const: linux,wdt-gpio
24 - description:
25 Either a high-to-low or a low-to-high transition clears the WDT counter.
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/Documentation/devicetree/bindings/pinctrl/
Dcirrus,madera.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - patches@opensource.cirrus.com
30 Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
33 pin-settings:
40 '-pins$':
43 - $ref: pincfg-node.yaml#
44 - $ref: pinmux-node.yaml#
63 dmic6, io, dsp-gpio, irq1, irq2, fll1-clk,
[all …]
/Documentation/driver-api/serial/
Dserial-iso7816.rst8 ISO/IEC7816 is a series of standards specifying integrated circuit cards (ICC)
11 2. Hardware-related considerations
14 Some CPUs/UARTs (e.g., Microchip AT91) contain a built-in mode capable of
19 available at user-level to allow switching from one mode to the other, and
35 4. Usage from user-level
38 From user-level, ISO7816 configuration can be get/set using the previous
46 /* Open your specific device (e.g., /dev/mydevice): */
47 int fd = open ("/dev/mydevice", O_RDWR);
/Documentation/devicetree/bindings/leds/
Dleds-aw2013.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/leds/leds-aw2013.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: AWINIC AW2013 3-channel LED Driver
10 - Nikita Travkin <nikitos.tr@gmail.com>
13 The AW2013 is a 3-channel LED driver with I2C interface. It can control
25 description: Open-drain, low active interrupt pin "INTN".
28 vcc-supply:
31 vio-supply:
[all …]
/Documentation/devicetree/bindings/iio/addac/
Dadi,ad74115.yaml1 # 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
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:
33 spi-cpol: true
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/Documentation/devicetree/bindings/sound/
Dcirrus,cs42l43.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - patches@opensource.cirrus.com
21 - $ref: dai-common.yaml#
26 - cirrus,cs42l43
31 vdd-p-supply:
35 vdd-a-supply:
39 vdd-d-supply:
43 vdd-io-supply:
[all …]
Dcirrus,cs35l41.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - david.rhodes@cirrus.com
19 - cirrus,cs35l40
20 - cirrus,cs35l41
28 '#sound-dai-cells':
33 reset-gpios:
36 VA-supply:
39 VP-supply:
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/Documentation/userspace-api/media/v4l/
Dext-ctrls-flash.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
3 .. _flash-controls:
17 .. _flash-controls-use-cases:
24 ------------------------------------------
35 ----------------------------------------
37 The synchronised LED flash is pre-programmed by the host (power and
46 ------------------
52 .. _flash-control-id:
55 -----------------
61 Defines the mode of the flash LED, the high-power white LED attached
[all …]
Dvidioc-enuminput.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
13 VIDIOC_ENUMINPUT - Enumerate video inputs
26 File descriptor returned by :c:func:`open()`.
45 .. flat-table:: struct v4l2_input
46 :header-rows: 0
47 :stub-columns: 0
50 * - __u32
51 - ``index``
52 - Identifies the input, set by the application.
53 * - __u8
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/Documentation/driver-api/gpio/
Ddriver.rst26 between 0 and n-1, n being the number of GPIOs managed by the chip.
29 example if a system uses a memory-mapped set of I/O-registers where 32 GPIO
30 lines are handled by one bit per line in a 32-bit register, it makes sense to
44 So for example one platform could use global numbers 32-159 for GPIOs, with a
46 global numbers 0..63 with one set of GPIO controllers, 64-79 with another type
47 of GPIO controller, and on one particular board 80-95 with an FPGA. The legacy
49 2000-2063 to identify GPIO lines in a bank of I2C GPIO expanders.
60 - methods to establish GPIO line direction
61 - methods used to access GPIO line values
62 - method to set electrical configuration for a given GPIO line
[all …]
/Documentation/devicetree/bindings/mfd/
Drohm,bd71815-pmic.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/mfd/rohm,bd71815-pmic.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: ROHM BD71815 Power Management Integrated Circuit
10 - Matti Vaittinen <mazziesaccount@gmail.com>
13 BD71815AGW is a single-chip power management ICs for battery-powered
15 for LED and a 500 mA single-cell linear charger. Also included is a Coulomb
16 counter, a real-time clock (RTC), and a 32.768 kHz clock gate and two GPOs.
30 gpio-controller: true
[all …]
Drohm,bd71828-pmic.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/mfd/rohm,bd71828-pmic.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: ROHM BD71828 Power Management Integrated Circuit
10 - Matti Vaittinen <mazziesaccount@gmail.com>
13 BD71828GW is a single-chip power management IC for battery-powered portable
15 single-cell linear charger. Also included is a Coulomb counter, a real-time
21 - const: rohm,bd71828
23 - items:
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/Documentation/hwmon/
Dadm9240.rst10 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
[all …]
Dasc7621.rst20 Andigilog has both the PECI and pre-PECI versions of the Heceta-6, as
21 Intel calls them. Heceta-6e has high frequency PWM and Heceta-6p has
23 Heceta-6e part and aSC7621 is the Heceta-6p part. They are both in
28 have used registers below 20h for vendor-specific functions in addition
29 to those in the Intel-specified vendor range.
32 The fan speed control uses this finer value to produce a "step-less" fan
33 PWM output. These two bytes are "read-locked" to guarantee that once a
34 high or low byte is read, the other byte is locked-in until after the
37 sheet says 10-bits of resolution, although you may find the lower bits
47 We offer GPIO features on the former VID pins. These are open-drain
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/Documentation/i2c/busses/
Di2c-parport.rst2 Kernel driver i2c-parport
7 This is a unified driver for several i2c-over-parallel-port adapters,
11 * i2c-philips-par
12 * i2c-elv
13 * i2c-velleman
14 * video/i2c-parport
25 * (type=6) Barco LPT->DVI (K5800236) adapter
27 * (type=8) VCT-jig
42 -------------------------
44 If you want to build you own i2c-over-parallel-port adapter, here is
[all …]
/Documentation/sound/designs/
Dcompress-offload.rst2 ALSA Compress-Offload API
5 Pierre-Louis.Bossart <pierre-louis.bossart@linux.intel.com>
18 in system-on-chip designs, and DSPs are also integrated in audio
20 reduction of power consumption compared to host-based
27 provide a control and data-streaming interface for audio DSPs.
29 The design of this API was inspired by the 2-year experience with the
39 - separation between byte counts and time. Compressed formats may have
41 may vary from frame-to-frame. As a result, it is not possible to
44 reliable audio-video synchronization, which requires precise
47 - Handling of multiple formats. PCM data only requires a specification
[all …]
/Documentation/power/
Dpower_supply_class.rst8 properties to user-space.
60 +--------------------------------------------------------------------------+
61 | **Charge/Energy/Capacity - how to not confuse** |
62 +--------------------------------------------------------------------------+
66 | - `CHARGE_*` |
68 | - `ENERGY_*` |
70 | - `CAPACITY` |
72 +--------------------------------------------------------------------------+
102 open circuit voltage of the battery.
142 relative, time-based measurements.
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