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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:
[all …]
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
[all …]
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]$":
[all …]
H A Drichtek,rt6245-regulator.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/regulator/richtek,rt6245-regulator.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - ChiYuan Huang <cy_huang@richtek.com>
13 The RT6245 is a high-performance, synchronous step-down converter
18 - $ref: regulator.yaml#
23 - richtek,rt6245
28 enable-gpios:
31 it will be treat as a default-on power.
[all …]
/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
[all …]
/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>
40 #define MAX15301_WAIT_TIME 100 /* us */
42 static ushort delay = MAX15301_WAIT_TIME; variable
43 module_param(delay, ushort, 0644);
44 MODULE_PARM_DESC(delay, "Delay between chip accesses in us");
[all …]
/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 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/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/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/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-cs-high, etc. or they could
12 be controller specific like delay in clock or data lines, etc. These
14 per-peripheral and there can be multiple peripherals attached to a
20 - Mark Brown <broonie@kernel.org>
28 - 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/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 …]
/linux/Documentation/devicetree/bindings/i2c/
H A Di2c-arb-gpio-challenge.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/i2c/i2c-arb-gpio-challenge.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: GPIO-based I2C Arbitration Using a Challenge & Response Mechanism
10 - Doug Anderson <dianders@chromium.org>
11 - Peter Rosin <peda@axentia.se>
18 standard I2C multi-master rules. Using GPIOs is generally useful in the case
30 others can see. These are all active low with pull-ups enabled. We'll
32 * OUR_CLAIM: output from us signaling to other hosts that we want the bus
[all …]
/linux/Documentation/devicetree/bindings/thermal/
H A Dthermal-idle.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 ---
5 $id: http://devicetree.org/schemas/thermal/thermal-idle.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Daniel Lezcano <daniel.lezcano@linaro.org>
22 const: thermal-idle
24 A thermal-idle node describes the idle cooling device properties to
27 '#cooling-cells':
31 the cooling-maps reference. The first cell is the minimum cooling state
34 duration-us:
[all …]
/linux/Documentation/driver-api/thermal/
H A Dexynos_thermal_emulation.rst10 -----------
27 (Exynos also supports user changeable delay time which would be used to
28 delay of changing temperature. However, this node only uses same delay
29 of real sensing time, 938us.)
32 enabling. It means when you want to update the any value of delay or
49 | +-----------
51 | +-------------| |
54 20 | | | +----------
58 |<----->| |<----->| |<----->| |
59 | 938us | | | | | |

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