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/Documentation/devicetree/bindings/input/touchscreen/
Dcyttsp.txt4 - compatible : must be "cypress,cyttsp-i2c" or "cypress,cyttsp-spi"
5 - reg : Device I2C address or SPI chip select number
6 - spi-max-frequency : Maximum SPI clocking speed of the device (for cyttsp-spi)
7 - interrupts : (gpio) interrupt to which the chip is connected
9 - bootloader-key : the 8-byte bootloader key that is required to switch
16 - reset-gpios : the reset gpio the chip is connected to
18 - touchscreen-size-x : horizontal resolution of touchscreen (in pixels)
19 - touchscreen-size-y : vertical resolution of touchscreen (in pixels)
20 - touchscreen-fuzz-x : horizontal noise value of the absolute input device
22 - touchscreen-fuzz-y : vertical noise value of the absolute input device
[all …]
Dtsc2005.txt4 - compatible : "ti,tsc2004" or "ti,tsc2005"
5 - reg : Device address
6 - interrupts : IRQ specifier
7 - spi-max-frequency : Maximum SPI clocking speed of the device
11 - vio-supply : Regulator specifier
12 - reset-gpios : GPIO specifier for the controller reset line
13 - ti,x-plate-ohms : integer, resistance of the touchscreen's X plates
15 - ti,esd-recovery-timeout-ms : integer, if the touchscreen does not respond after
18 - properties defined in touchscreen.txt
26 vio-supply = <&vio>;
[all …]
/Documentation/devicetree/bindings/watchdog/
Dziirave-wdt.txt4 - compatible: must be "zii,rave-wdt"
5 - reg: i2c slave address of device, usually 0x38
8 - timeout-sec: Watchdog timeout value in seconds.
9 - reset-duration-ms: Duration of the pulse generated when the watchdog times
15 compatible = "zii,rave-wdt";
17 timeout-sec = <30>;
18 reset-duration-ms = <30>;
Dnuvoton,npcm-wdt.txt3 Nuvoton NPCM timer module provides five 24-bit timer counters, and a watchdog.
4 The watchdog supports a pre-timeout interrupt that fires 10ms before the
8 - compatible : "nuvoton,npcm750-wdt" for NPCM750 (Poleg).
9 - reg : Offset and length of the register set for the device.
10 - interrupts : Contain the timer interrupt with flags for
14 - clocks : phandle of timer reference clock.
15 - clock-frequency : The frequency in Hz of the clock that drives the NPCM7xx
19 - timeout-sec : Contains the watchdog timeout in seconds
24 compatible = "nuvoton,npcm750-wdt";
/Documentation/devicetree/bindings/power/reset/
Dgpio-poweroff.txt9 When the power-off handler is called, the gpio is configured as an
11 condition. This will also cause an inactive->active edge condition, so
12 triggering positive edge triggered power off. After a delay of 100ms,
13 the GPIO is set to inactive, thus causing an active->inactive edge,
14 triggering negative edge triggered power off. After another 100ms
16 the CPU still running after a 3000ms delay, a WARN_ON(1) is emitted.
19 - compatible : should be "gpio-poweroff".
20 - gpios : The GPIO to set high/low, see "gpios property" in
26 - input : Initially configure the GPIO line as an input. Only reconfigure
27 it to an output when the power-off handler is called. If this optional
[all …]
/Documentation/devicetree/bindings/serial/
Dpl011.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Rob Herring <robh@kernel.org>
13 - $ref: /schemas/serial.yaml#
21 - arm,pl011
22 - zte,zx296702-uart
24 - compatible
29 - items:
30 - const: arm,pl011
[all …]
/Documentation/devicetree/bindings/input/
Dinput-reset.txt11 The /chosen node should contain a 'linux,sysrq-reset-seq' child node to define
18 timeout-ms: duration keys must be pressed together in milliseconds before
25 linux,sysrq-reset-seq {
29 timeout-ms = <3000>;
/Documentation/ABI/testing/
Dsysfs-block-device4 Contact: linux-ide@vger.kernel.org
11 0 OFF - the LED is not activated on activity
12 1 BLINK_ON - the LED blinks on every 10ms when activity is
14 2 BLINK_OFF - the LED is on when idle, and blinks off
15 every 10ms when activity is detected.
24 Contact: linux-ide@vger.kernel.org
32 - If the device does not support the unload heads feature,
33 access is denied with -EOPNOTSUPP.
34 - The maximal value accepted for a timeout is 30000
36 - A previously set timeout can be cancelled and disk can resume
[all …]
Dsysfs-block7 1 - reads completed successfully
8 2 - reads merged
9 3 - sectors read
10 4 - time spent reading (ms)
11 5 - writes completed
12 6 - writes merged
13 7 - sectors written
14 8 - time spent writing (ms)
15 9 - I/Os currently in progress
16 10 - time spent doing I/Os (ms)
[all …]
Ddebugfs-cros-ec1 What: /sys/kernel/debug/<cros-ec-device>/console_log
10 What: /sys/kernel/debug/<cros-ec-device>/panicinfo
18 What: /sys/kernel/debug/<cros-ec-device>/pdinfo
23 information for all the USB PD/type-C ports available. If
27 What: /sys/kernel/debug/<cros-ec-device>/uptime
31 A u32 providing the time since EC booted in ms. This is
36 What: /sys/kernel/debug/<cros-ec-device>/last_resume_result
50 system due to a timeout when watching for SLP_S0 transitions.
/Documentation/devicetree/bindings/leds/
Dleds-lm3601x.txt1 * Texas Instruments - lm3601x Single-LED Flash Driver
3 The LM3601X are ultra-small LED flash drivers that
7 - compatible : Can be one of the following
10 - reg : I2C slave address
11 - #address-cells : 1
12 - #size-cells : 0
15 - reg : 0 - Indicates a IR mode
16 1 - Indicates a Torch (white LED) mode
20 - flash-max-microamp : Range from 11mA - 1.5A
21 - flash-max-timeout-us : Range from 40ms - 1600ms
[all …]
Dcommon.txt5 blinking patterns, flash timeout, flash faults and external flash strobe mode.
15 - led-sources : List of device current outputs the LED is connected to. The
19 - function: LED functon. Use one of the LED_FUNCTION_* prefixed definitions
20 from the header include/dt-bindings/leds/common.h.
23 - color : Color of the LED. Use one of the LED_COLOR_ID_* prefixed definitions
24 from the header include/dt-bindings/leds/common.h.
27 - function-enumerator: Integer to be used when more than one instance
31 - label : The label for this LED. If omitted, the label is taken from the node
34 label. This property is deprecated - use 'function' and 'color'
35 properties instead. function-enumerator has no effect when this
[all …]
/Documentation/devicetree/bindings/mmc/
Dpxa-mmc.txt6 - compatible: Should be "marvell,pxa-mmc".
7 - vmmc-supply: A regulator for VMMC
10 - marvell,detect-delay-ms: sets the detection delay timeout in ms.
18 compatible = "marvell,pxa-mmc";
21 vmmc-supply = <&mmc_regulator>;
22 cd-gpios = <&gpio 23 0>;
23 wp-gpios = <&gpio 24 0>;
/Documentation/devicetree/bindings/extcon/
Dextcon-arizona.txt11 - wlf,hpdet-channel : Headphone detection channel.
12 ARIZONA_ACCDET_MODE_HPL or 1 - Headphone detect mode is set to HPDETL
13 ARIZONA_ACCDET_MODE_HPR or 2 - Headphone detect mode is set to HPDETR
17 - wlf,use-jd2 : Use the additional JD input along with JD1 for dual pin jack
19 - wlf,use-jd2-nopull : Internal pull on JD2 is disabled when used for
21 - wlf,jd-invert : Invert the polarity of the jack detection switch
23 - wlf,micd-software-compare : Use a software comparison to determine mic
25 - wlf,micd-detect-debounce : Additional software microphone detection
27 - wlf,micd-pol-gpio : GPIO specifier for the GPIO controlling the headset
29 - wlf,micd-bias-start-time : Time allowed for MICBIAS to startup prior to
[all …]
/Documentation/devicetree/bindings/mfd/
Dstmpe.txt1 * ST Microelectronics STMPE Multi-Functional Device
7 - compatible : "st,stmpe[610|801|811|1600|1601|2401|2403]"
8 - reg : I2C/SPI address of the device
11 - interrupts : The interrupt outputs from the controller
12 - interrupt-controller : Marks the device node as an interrupt controller
13 - wakeup-source : Marks the input device as wakable
14 - st,autosleep-timeout : Valid entries (ms); 4, 16, 32, 64, 128, 256, 512 and 1024
15 - irq-gpio : If present, which GPIO to use for event IRQ
18 - st,sample-time : ADC conversion time in number of clock.
19 0 -> 36 clocks 4 -> 80 clocks (recommended)
[all …]
/Documentation/devicetree/bindings/i2c/
Di2c-gpio.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/i2c/i2c-gpio.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Wolfram Sang <wolfram@the-dreams.de>
13 - $ref: /schemas/i2c/i2c-controller.yaml#
18 - const: i2c-gpio
20 sda-gpios:
24 from <dt-bindings/gpio/gpio.h> since the signal is by definition
28 scl-gpios:
[all …]
/Documentation/w1/masters/
Dds2490.rst13 -----------
16 which allows to build USB <-> W1 bridges.
18 DS9490(R) is a USB <-> W1 bus master device
20 low-level operational chip.
24 - The weak pullup current is a minimum of 0.9mA and maximum of 6.0mA.
25 - The 5V strong pullup is supported with a minimum of 5.9mA and a
27 - The hardware will detect when devices are attached to the bus on the
31 - The number of USB bus transactions could be reduced if w1_reset_send
40 - The hardware supports normal, flexible, and overdrive bus
42 - The registered w1_bus_master functions don't define error
[all …]
/Documentation/watchdog/
Dwatchdog-parameters.rst7 be listed here unless the driver has its own driver-specific information
10 See Documentation/admin-guide/kernel-parameters.rst for information on
14 -------------------------------------------------
21 timeout. Setting this to a non-zero value can be useful to ensure that
25 -------------------------------------------------
36 -------------------------------------------------
43 timeout:
44 Watchdog timeout in seconds. 1<= timeout <=63, default=60.
49 -------------------------------------------------
52 timeout:
[all …]
/Documentation/networking/
Dxfrm_sync.txt16 This way a backup stays as closely up-to-date as an active member.
20 For this reason, we also add a nagle-like algorithm to restrict
23 These thresholds are set system-wide via sysctls or can be updated
27 - the lifetime byte counter
31 - the replay sequence for both inbound and outbound
34 ----------------------
36 nlmsghdr:aevent_id:optional-TLVs.
69 message (kernel<->user) as well the cause (config, query or event).
80 -----------------------------------------
99 ----------------------------------------------
[all …]
Dz8530drv.txt7 1. ftp://ftp.ccac.rwth-aachen.de/pub/jr/z8530drv-utils_3.0-3.tar.gz
9 2. ftp://ftp.pspt.fi/pub/ham/linux/ax25/z8530drv-utils_3.0-3.tar.gz
16 -----------------------------------------------------------------------------
19 SCC.C - Linux driver for Z8530 based HDLC cards for AX.25
44 AX.25-HOWTO on how to emulate a KISS TNC on network device drivers.
57 please read 'man insmod' that comes with module-init-tools.
67 of your rc.*-files. This has to be done BEFORE you can
94 chip - this is just a delimiter to make sccinit a bit simpler to
97 data_a - the address of the data port A of this Z8530 (needed)
98 ctrl_a - the address of the control port A (needed)
[all …]
/Documentation/devicetree/bindings/display/rockchip/
Ddw_hdmi-rockchip.txt9 following device-specific properties.
14 - compatible: should be one of the following:
15 "rockchip,rk3228-dw-hdmi"
16 "rockchip,rk3288-dw-hdmi"
17 "rockchip,rk3328-dw-hdmi"
18 "rockchip,rk3399-dw-hdmi"
19 - reg: See dw_hdmi.txt.
20 - reg-io-width: See dw_hdmi.txt. Shall be 4.
21 - interrupts: HDMI interrupt number
22 - clocks: See dw_hdmi.txt.
[all …]
/Documentation/cdrom/
Dide-cd.rst1 IDE-CD driver documentation
9 ---------------
11 The ide-cd driver should work with all ATAPI ver 1.2 to ATAPI 2.6 compliant
14 both ATAPI-compliant drives and drives which use a proprietary
25 - Reading from data tracks, and mounting ISO 9660 filesystems.
27 - Playing audio tracks. Most of the CDROM player programs floating
30 - Multisession support.
32 - On drives which support it, reading digital audio data directly
36 - There is now support for CDROM changers which comply with the
37 ATAPI 2.6 draft standard (such as the NEC CDR-251). This additional
[all …]
/Documentation/ide/
Dide.rst9 -------------------------------------------------------------------------------
21 For the CMD640, linux disables "IRQ unmasking" (hdparm -u1) on any
23 If "prefetch" is disabled (hdparm -p8), then "IRQ unmasking" can be
26 For the CMD640, linux disables "32bit I/O" (hdparm -c1) on any drive
28 If "prefetch" is enabled (hdparm -p9), then "32bit I/O" can be
37 -------------------------------------------------------------------------------
42 - 40-conductor IDE cables are capable of transferring data in DMA modes up to
45 - If possible devices should be attached to separate channels if they are
46 available. Typically the disk on the first and CD-ROM on the second.
48 - If you mix devices on the same cable, please consider using similar devices
[all …]
/Documentation/driver-api/serial/
Ddriver.rst10 The reference implementation is contained within amba-pl011.c.
15 --------------------------------
25 ---------------
38 -------
41 necessary locking using port->lock. There are some exceptions (which
44 There are two locks. A per-port spinlock, and an overall semaphore.
46 From the core driver perspective, the port->lock locks the following
49 port->mctrl
50 port->icount
51 port->state->xmit.head (circ_buf->head)
[all …]
/Documentation/block/
Dbfq-iosched.rst5 BFQ is a proportional-share I/O scheduler, with some extra
6 low-latency capabilities. In addition to cgroups support (blkio or io
9 - BFQ guarantees a high system and application responsiveness, and a
10 low latency for time-sensitive applications, such as audio or video
12 - BFQ distributes bandwidth, and not just time, among processes or
19 goal, for a given device, is to achieve the maximum-possible
20 throughput at all times, then do switch off all low-latency heuristics
25 As every I/O scheduler, BFQ adds some overhead to per-I/O-request
27 single-lock-protected, per-request processing time of BFQ---i.e., the
29 completion hooks---is, e.g., 1.9 us on an Intel Core i7-2760QM@2.40GHz
[all …]

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