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/linux/Documentation/devicetree/bindings/net/
H A Dmdio.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Andrew Lunn <andrew@lunn.ch>
11 - Florian Fainelli <f.fainelli@gmail.com>
12 - Heiner Kallweit <hkallweit1@gmail.com>
17 bus. These should follow the generic ethernet-phy.yaml document, or
22 pattern: '^mdio(-(bus|external))?(@.+|-([0-9]+))?$'
24 "#address-cells":
27 "#size-cells":
[all …]
/linux/Documentation/devicetree/bindings/regulator/
H A Drichtek,rtmv20-regulator.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/regulator/richtek,rtmv20-regulator.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - ChiYuan Huang <cy_huang@richtek.com>
27 wakeup-source: true
32 enable-gpios:
36 richtek,ld-pulse-delay-us:
38 load current pulse delay in microsecond after strobe pin pulse high.
43 richtek,ld-pulse-width-us:
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H A Dfixed-regulator.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/regulator/fixed-regulator.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Liam Girdwood <lgirdwood@gmail.com>
11 - Mark Brown <broonie@kernel.org>
16 expected to have the regulator-min-microvolt and regulator-max-microvolt
20 - $ref: regulator.yaml#
21 - if:
25 const: regulator-fixed-clock
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H A Dregulator-max77620.txt3 Device has multiple DCDC(sd[0-3] and LDOs(ldo[0-8]). The input supply
6 sub-node "regulators" which is child node of device node.
14 -------------------
18 in-sd0-supply: Input supply for SD0, INA-SD0 or INB-SD0 pins.
19 in-sd1-supply: Input supply for SD1.
20 in-sd2-supply: Input supply for SD2.
21 in-sd3-supply: Input supply for SD3.
22 in-ldo0-1-supply: Input supply for LDO0 and LDO1.
23 in-ldo2-supply: Input supply for LDO2.
24 in-ldo3-5-supply: Input supply for LDO3 and LDO5
[all …]
H A Dmps,mpq7920.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Saravanan Sekar <sravanhome@gmail.com>
14 pattern: "pmic@[0-9a-f]{1,2}"
17 - mps,mpq7920
27 after their hardware counterparts BUCK[1-4], one LDORTC, and LDO[2-5]
30 mps,switch-freq:
44 "^ldo[1-4]$":
49 "^buck[1-4]$":
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/linux/tools/testing/selftests/ftrace/test.d/preemptirq/
H A Dirqsoff_tracer.tc2 # SPDX-License-Identifier: GPL-2.0
36 modprobe $MOD test_mode=preempt delay=500000 || fail
38 modprobe $MOD test_mode=preempt delay=500000 || fail
40 modprobe $MOD test_mode=preempt delay=500000 || fail
46 grep -q "tracer: preemptoff" trace || fail
49 grep -E -q "5.....us : <stack trace>" trace || fail
52 grep -E -q "latency: 5..... us" trace || fail
59 modprobe $MOD test_mode=irq delay=500000 || fail
61 modprobe $MOD test_mode=irq delay=500000 || fail
63 modprobe $MOD test_mode=irq delay=500000 || fail
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/linux/drivers/hwmon/pmbus/
H A Dmax15301.c1 // SPDX-License-Identifier: GPL-2.0-or-later
8 * extensive empirical testing has revealed that auto-detection of
9 * limit-registers will fail in a random fashion unless the delay
10 * parameter is set to above about 80us. The default delay is set
11 * to 100us to include some safety margin.
21 #include <linux/delay.h>
39 #define MAX15301_WAIT_TIME 100 /* us */
41 static ushort delay = MAX15301_WAIT_TIME; variable
42 module_param(delay, ushort, 0644);
43 MODULE_PARM_DESC(delay, "Delay between chip accesses in us");
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/linux/arch/arm/boot/dts/nxp/imx/
H A Dimx6q-apalis-eval-v1.2.dts1 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
6 /dts-v1/;
8 #include "imx6q-apalis-eval.dtsi"
12 compatible = "toradex,apalis_imx6q-eval-v1.2", "toradex,apalis_imx6q",
15 reg_3v3_mmc: regulator-3v3-mmc {
16 compatible = "regulator-fixed";
17 enable-active-high;
19 off-on-delay-us = <100000>;
20 pinctrl-names = "default";
21 pinctrl-0 = <&pinctrl_enable_3v3_mmc>;
[all …]
H A Dimx6dl-victgo.dts1 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
7 /dts-v1/;
9 #include "imx6qdl-vicut1.dtsi"
15 gpio-keys {
16 compatible = "gpio-keys";
17 pinctrl-names = "default";
18 pinctrl-0 = <&pinctrl_gpiokeys>;
21 key-power {
25 wakeup-source;
28 key-enter {
[all …]
H A Dimx6dl-plym2m.dts1 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
7 /dts-v1/;
8 #include <dt-bindings/gpio/gpio.h>
9 #include <dt-bindings/leds/common.h>
17 stdout-path = &uart4;
21 compatible = "pwm-backlight";
23 brightness-levels = <0 1000>;
24 num-interpolated-steps = <20>;
25 default-brightness-level = <19>;
26 power-supply = <&reg_12v0>;
[all …]
/linux/Documentation/devicetree/bindings/input/
H A Dti,nspire-keypad.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/input/ti,nspire-keypad.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: TI-NSPIRE Keypad
10 - Andrew Davis <afd@ti.com>
13 - $ref: input.yaml#
14 - $ref: matrix-keymap.yaml#
19 - ti,nspire-keypad
30 scan-interval:
[all …]
H A Dgpio-matrix-keypad.txt6 keypad can sense a key-press and key-release by means of GPIO lines and
10 - compatible: Should be "gpio-matrix-keypad"
11 - row-gpios: List of gpios used as row lines. The gpio specifier
14 - col-gpios: List of gpios used as column lines. The gpio specifier
17 - linux,keymap: The definition can be found at
18 bindings/input/matrix-keymap.txt
21 - linux,no-autorepeat: do no enable autorepeat feature.
22 - wakeup-source: use any event on keypad as wakeup event.
24 - debounce-delay-ms: debounce interval in milliseconds
25 - col-scan-delay-us: delay, measured in microseconds, that is needed
[all …]
H A Dsyna,rmi4.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Jason A. Donenfeld <Jason@zx2c4.com>
11 - Matthias Schiffer <matthias.schiffer@ew.tq-group.com
12 - Vincent Huang <vincent.huang@tw.synaptics.com>
22 - syna,rmi4-i2c
23 - syna,rmi4-spi
28 '#address-cells':
31 '#size-cells':
[all …]
/linux/arch/arm/boot/dts/marvell/
H A Dkirkwood-synology.dtsi1 // SPDX-License-Identifier: GPL-2.0
12 pinctrl: pin-controller@10000 {
13 pmx_alarmled_12: pmx-alarmled-12 {
18 pmx_fanctrl_15: pmx-fanctrl-15 {
23 pmx_fanctrl_16: pmx-fanctrl-16 {
28 pmx_fanctrl_17: pmx-fanctrl-17 {
33 pmx_fanalarm_18: pmx-fanalarm-18 {
38 pmx_hddled_20: pmx-hddled-20 {
43 pmx_hddled_21: pmx-hddled-21 {
48 pmx_hddled_22: pmx-hddled-22 {
[all …]
/linux/Documentation/devicetree/bindings/mmc/
H A Dmmc-pwrseq-simple.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/mmc/mmc-pwrseq-simple.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Ulf Hansson <ulf.hansson@linaro.org>
14 of common properties between various SOC designs. It thus enables us to use
19 const: mmc-pwrseq-simple
21 reset-gpios:
28 They will be de-asserted right after the power has been provided to the
33 description: Handle for the entry in clock-names.
[all …]
/linux/tools/testing/selftests/kvm/
H A Drseq_test.c1 // SPDX-License-Identifier: GPL-2.0-only
33 * Any bug related to task migration is likely to be timing-dependent; perform
89 * is in-progress, while a completely different count indicates in migration_worker()
96 * stable, i.e. while changing affinity is in-progress. in migration_worker()
108 * Wait 1-10us before proceeding to the next iteration and more in migration_worker()
109 * specifically, before bumping seq_cnt again. A delay is in migration_worker()
135 * 3. To ensure the read-side makes efficient forward progress, in migration_worker()
136 * e.g. if getcpu() involves a syscall. Stalling the read-side in migration_worker()
138 * to stabilize and less time trying to hit the timing-dependent in migration_worker()
141 * Because any bug in this area is likely to be timing-dependent, in migration_worker()
[all …]
/linux/Documentation/devicetree/bindings/input/touchscreen/
H A Dadi,ad7879.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 AD7879(-1)/AD7889(-1) touchscreen interface (SPI/I2C)
10 - Frank Li <Frank.Li@nxp.com>
16 for I2C slave, use "adi,ad7879-1"
18 - adi,ad7879
19 - adi,ad7879-1
27 touchscreen-max-pressure:
31 adi,resistance-plate-x:
[all …]
/linux/drivers/w1/masters/
H A Dw1-uart.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * w1-uart - UART 1-Wire bus driver
5 * Uses the UART interface (via Serial Device Bus) to create the 1-Wire
6 * timing patterns. Implements the following 1-Wire master interface:
8 * - reset_bus: requests baud-rate 9600
10 * - touch_bit: requests baud-rate 115200
16 #include <linux/delay.h>
27 /* Timeout to wait for completion of serdev-receive */
31 * struct w1_uart_config - configuration for 1-Wire operation
32 * @baudrate: baud-rate returned from serdev
[all …]
/linux/Documentation/admin-guide/blockdev/
H A Dparide.rst5 PARIDE v1.03 (c) 1997-8 Grant Guenther <grant@torque.net>
12 to personal computers, many external devices such as portable hard-disk,
13 CD-ROM, LS-120 and tape drives use the parallel port to connect to their
14 host computer. While some devices (notably scanners) use ad-hoc methods
17 a parallel-port adapter chip added in. Some of the original parallel port
19 (The Iomega PPA-3 adapter used in the ZIP drives is an example of this
27 which is then connected to a floppy-tape mechanism. The vast majority
30 were to open up a parallel port CD-ROM drive, for instance, one would
31 find a standard ATAPI CD-ROM drive, a power supply, and a single adapter
33 IDE cable. It is usually possible to exchange the CD-ROM device with
[all …]
/linux/include/ufs/
H A Dufs_quirks.h1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (c) 2014-2016, The Linux Foundation. All rights reserved.
22 * ufs_dev_quirk - ufs device quirk info
42 * - As soon as SW sees the DL NAC error, it should schedule the error handler
43 * - Error handler would sleep for 50ms to see if there are any fatal errors
45 * - If there are fatal errors then SW does normal error recovery.
46 * - If there are no fatal errors then SW sends the NOP command to device
48 * - If NOP command times out, SW does normal error recovery
49 * - If NOP command succeed, skip the error handling.
59 * 600us which may not be enough for reliable hibern8 exit hardware sequence
[all …]
/linux/Documentation/devicetree/bindings/spi/
H A Dspi-peripheral-props.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/spi/spi-peripheral-props.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Peripheral-specific properties for a SPI bus.
11 be common properties like spi-max-frequency, spi-cpha, etc. or they could be
12 controller specific like delay in clock or data lines, etc. These properties
13 need to be defined in the peripheral node because they are per-peripheral and
19 - Mark Brown <broonie@kernel.org>
27 - minimum: 0
[all …]
/linux/sound/pci/emu10k1/
H A Dtimer.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (c) by Lee Revell <rlrevell@joe-job.com>
17 unsigned int delay; in snd_emu10k1_timer_start() local
20 delay = timer->sticks - 1; in snd_emu10k1_timer_start()
21 if (delay < 5 ) /* minimum time is 5 ticks */ in snd_emu10k1_timer_start()
22 delay = 5; in snd_emu10k1_timer_start()
24 outw(delay & TIMER_RATE_MASK, emu->port + TIMER); in snd_emu10k1_timer_start()
41 if (emu->card_capabilities->emu_model && in snd_emu10k1_timer_c_resolution()
42 emu->emu1010.word_clock == 44100) in snd_emu10k1_timer_c_resolution()
43 return 22676; // 1 sample @ 44.1 kHz = 22.675736...us in snd_emu10k1_timer_c_resolution()
[all …]
/linux/Documentation/trace/
H A Dftrace.rst2 ftrace - Function Tracer
13 - Written for: 2.6.28-rc2
14 - Updated for: 3.10
15 - Updated for: 4.13 - Copyright 2017 VMware Inc. Steven Rostedt
16 - Converted to rst format - Changbin Du <changbin.du@intel.com>
19 ------------
24 performance issues that take place outside of user-space.
41 ----------------------
43 See Documentation/trace/ftrace-design.rst for details for arch porters and such.
47 ---------------
[all …]
/linux/arch/arm64/boot/dts/nvidia/
H A Dtegra210-p2180.dtsi1 // SPDX-License-Identifier: GPL-2.0
2 #include <dt-bindings/mfd/max77620.h>
17 stdout-path = "serial0:115200n8";
26 vdd-supply = <&vdd_gpu>;
31 /delete-property/ dmas;
32 /delete-property/ dma-names;
37 /delete-property/ reg-shift;
39 compatible = "nvidia,tegra30-hsuart";
40 reset-names = "serial";
43 compatible = "brcm,bcm43540-bt";
[all …]
/linux/arch/arm/boot/dts/samsung/
H A Dexynos4412-galaxy-s3.dtsi1 // SPDX-License-Identifier: GPL-2.0
9 /dts-v1/;
10 #include <dt-bindings/leds/common.h>
11 #include "exynos4412-midas.dtsi"
19 led-controller {
21 flen-gpios = <&gpj1 1 GPIO_ACTIVE_HIGH>;
22 enset-gpios = <&gpj1 2 GPIO_ACTIVE_HIGH>;
24 pinctrl-names = "default", "host", "isp";
25 pinctrl-0 = <&camera_flash_host>;
26 pinctrl-1 = <&camera_flash_host>;
[all …]

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