| /linux/include/dt-bindings/sound/ |
| H A D | cs35l45.h | 1 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
3 * cs35l45.h -- CS35L45 ALSA SoC audio driver DT bindings header
12 * cirrus,asp-sdout-hiz-ctrl
14 * TX_HIZ_UNUSED: TX pin high-impedance during unused slots.
15 * TX_HIZ_DISABLED: TX pin high-impedance when all channels disabled.
21 * Optional GPIOX Sub-nodes:
22 * The cs35l45 node can have up to three "cirrus,gpio-ctrlX" ('X' = [1,2,3])
23 * sub-nodes for configuring the GPIO pins.
25 * - gpio-dir : GPIO pin direction. Valid only when 'gpio-ctrl'
30 * - gpio-lvl : GPIO level. Valid only when 'gpio-ctrl' is 1 and 'gpio-dir' is 0.
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| /linux/Documentation/devicetree/bindings/sound/ |
| H A D | cirrus,cs35l45.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Ricardo Rivera-Matos <rriveram@opensource.cirrus.com>
11 - Richard Fitzgerald <rf@opensource.cirrus.com>
18 - $ref: dai-common.yaml#
23 - cirrus,cs35l45
31 '#sound-dai-cells':
34 reset-gpios:
37 vdd-a-supply:
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| H A D | ti,tlv320adc3xxx.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Ricard Wanderlof <ricardw@axis.com>
18 - $ref: dai-common.yaml#
23 - ti,tlv320adc3001
24 - ti,tlv320adc3101
30 '#sound-dai-cells':
33 '#gpio-cells':
36 gpio-controller: true
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| /linux/drivers/mux/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0
22 be called mux-adg792a.
32 be called mux-adgs1408.
35 tristate "GPIO-controlled Multiplexer"
38 GPIO-controlled Multiplexer controller.
41 of gpio pins. For N pins, there will be 2^N possible multiplexer
42 states. The GPIO pins can be connected (by the hardware) to several
46 be called mux-gpio.
49 tristate "MMIO/Regmap register bitfield-controlled Multiplexer"
53 MMIO/Regmap register bitfield-controlled Multiplexer controller.
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| H A D | gpio.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * GPIO-controlled multiplexer driver
12 #include <linux/gpio/consumer.h>
26 struct mux_gpio *mux_gpio = mux_chip_priv(mux->chip); in mux_gpio_set()
32 gpiod_multi_set_value_cansleep(mux_gpio->gpios, values); in mux_gpio_set()
42 { .compatible = "gpio-mux", },
49 struct device *dev = &pdev->dev; in mux_gpio_probe()
65 mux_chip->ops = &mux_gpio_ops; in mux_gpio_probe()
67 mux_gpio->gpios = devm_gpiod_get_array(dev, "mux", GPIOD_OUT_LOW); in mux_gpio_probe()
68 if (IS_ERR(mux_gpio->gpios)) in mux_gpio_probe()
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| /linux/drivers/leds/trigger/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
15 This allows LEDs to be controlled by a programmable timer
18 For more details read Documentation/leds/leds-class.rst.
23 tristate "LED One-shot Trigger"
25 This allows LEDs to blink in one-shot pulses with parameters
26 controlled via sysfs. It's useful to notify the user on
39 This allows LEDs to be controlled by disk activity.
46 This allows LEDs to be controlled by MTD activity.
52 This allows LEDs to be controlled by a CPU load average.
53 The flash frequency is a hyperbolic function of the 1-minute
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| /linux/drivers/pinctrl/nomadik/ |
| H A D | pinctrl-ab8500.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) ST-Ericsson SA 2012
5 * Author: Patrice Chotard <patrice.chotard@stericsson.com> for ST-Ericsson.
13 #include "pinctrl-abx500.h"
15 /* All the pins that can be used for GPIO and some other functions */
61 /* indicates the highest GPIO number */
65 * The names of the pins are denoted by GPIO number and ball name, even
66 * though they can be used for other things than GPIO, this is the first
116 * Maps local GPIO offsets to local pin numbers
311 AB8500_FUNC_GROUPS(gpio, "gpio1_a_1", "gpio2_a_1", "gpio3_a_1", "gpio4_a_1",
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| H A D | pinctrl-ab8505.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) ST-Ericsson SA 2012
5 * Author: Patrice Chotard <patrice.chotard@stericsson.com> for ST-Ericsson.
13 #include "pinctrl-abx500.h"
15 /* All the pins that can be used for GPIO and some other functions */
43 /* indicates the higher GPIO number */
47 * The names of the pins are denoted by GPIO number and ball name, even
48 * though they can be used for other things than GPIO, this is the first
80 * Maps local GPIO offsets to local pin numbers
197 AB8505_FUNC_GROUPS(gpio, "gpio1_a_1", "gpio2_a_1", "gpio3_a_1",
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| /linux/drivers/i2c/muxes/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
10 tristate "GPIO-based I2C arbitration"
17 a GPIO.
20 will be called i2c-arb-gpio-challenge.
23 tristate "GPIO-based I2C multiplexer"
27 GPIO based I2C multiplexer. This driver provides access to
28 I2C busses connected through a MUX, which is controlled
29 through GPIO pins.
32 will be called i2c-mux-gpio.
41 I2C busses connected through a MUX, which in turn is controlled
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| /linux/Documentation/devicetree/bindings/leds/ |
| H A D | leds-bcm6328.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/leds/leds-bcm6328.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Álvaro Fernández Rojas <noltari@gmail.com>
16 controller), which can either be controlled by software (exporting the 74x164
17 as spi-gpio. See
18 Documentation/devicetree/bindings/gpio/fairchild,74hc595.yaml), or by hardware
20 Some of these Serial LEDs are hardware controlled (e.g. ethernet LEDs) and
21 exporting the 74x164 as spi-gpio prevents those LEDs to be hardware
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| 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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| /linux/arch/arm/boot/dts/nxp/imx/ |
| H A D | imx6qdl-dhcom-drc02.dtsi | 1 // SPDX-License-Identifier: GPL-2.0+
8 stdout-path = "serial0:115200n8";
25 * NOTE: On DRC02, the RS485_RX_En is controlled by a separate
26 * GPIO line, however the i.MX6 UART driver assumes RX happens
30 rs485-rx-en-hog {
31 gpio-hog;
32 gpios = <18 0>; /* GPIO Q */
33 line-name = "rs485-rx-en";
34 output-low;
39 gpio-line-names =
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| /linux/Documentation/devicetree/bindings/leds/backlight/ |
| H A D | kinetic,ktd2801.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Kinetic Technologies KTD2801 one-wire backlight
10 - Duje Mihanović <duje.mihanovic@skole.hr>
13 The Kinetic Technologies KTD2801 is a LED backlight driver controlled
14 by a single GPIO line. The driver can be controlled with a PWM signal
15 or by pulsing the GPIO line to set the backlight level. This is called
19 - $ref: common.yaml#
25 ctrl-gpios:
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| /linux/Documentation/devicetree/bindings/media/i2c/ |
| H A D | maxim,max9286.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Jacopo Mondi <jacopo+renesas@jmondi.org>
12 - Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
13 - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
14 - Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
18 Serial Links (GMSL) and outputs them on a CSI-2 D-PHY port using up to 4 data
28 '#address-cells':
31 '#size-cells':
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| /linux/Documentation/devicetree/bindings/regulator/ |
| H A D | gpio-regulator.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/regulator/gpio-regulator.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: GPIO controlled regulators
10 - Liam Girdwood <lgirdwood@gmail.com>
11 - Mark Brown <broonie@kernel.org>
18 - $ref: regulator.yaml#
22 const: regulator-gpio
24 regulator-name: true
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| H A D | tps65090.txt | 4 - compatible: "ti,tps65090"
5 - reg: I2C slave address
6 - interrupts: the interrupt outputs of the controller
7 - regulators: A node that houses a sub-node for each regulator within the
8 device. Each sub-node is identified using the node's name, with valid
9 values listed below. The content of each sub-node is defined by the
11 dcdc[1-3], fet[1-7] and ldo[1-2] respectively.
12 - vsys[1-3]-supply: The input supply for DCDC[1-3] respectively.
13 - infet[1-7]-supply: The input supply for FET[1-7] respectively.
14 - vsys-l[1-2]-supply: The input supply for LDO[1-2] respectively.
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| H A D | maxim,max8997.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Krzysztof Kozlowski <krzk@kernel.org>
15 motor driver, flash LED driver and Micro-USB Interface Controller.
22 const: maxim,max8997-pmic
24 charger-supply:
30 - description: irq1 interrupt
31 - description: alert interrupt
33 max8997,pmic-buck1-dvs-voltage:
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| /linux/drivers/gpio/ |
| H A D | gpio-stp-xway.c | 1 // SPDX-License-Identifier: GPL-2.0-only
14 #include <linux/gpio/driver.h>
85 u8 groups; /* we can drive 1-3 groups of 8bit each */
95 * xway_stp_get() - gpio_chip->get - get gpios.
97 * @gpio: GPIO signal number.
101 static int xway_stp_get(struct gpio_chip *gc, unsigned int gpio) in xway_stp_get() argument
105 return (xway_stp_r32(chip->virt, XWAY_STP_CPU0) & BIT(gpio)); in xway_stp_get()
109 * xway_stp_set() - gpio_chip->set - set gpios.
111 * @gpio: GPIO signal number.
116 static int xway_stp_set(struct gpio_chip *gc, unsigned int gpio, int val) in xway_stp_set() argument
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| /linux/Documentation/i2c/muxes/ |
| H A D | i2c-mux-gpio.rst | 2 Kernel driver i2c-mux-gpio
8 -----------
10 i2c-mux-gpio is an i2c mux driver providing access to I2C bus segments
11 from a master I2C bus and a hardware MUX controlled through GPIO pins.
15 ---------- ---------- Bus segment 1 - - - - -
16 | | SCL/SDA | |-------------- | |
17 | |------------| |
19 | Linux | GPIO 1..N | MUX |--------------- Devices
20 | |------------| | | |
22 | | | |---------------| |
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| /linux/Documentation/devicetree/bindings/mfd/ |
| H A D | as3722.txt | 4 -------------------
5 - compatible: Must be "ams,as3722".
6 - reg: I2C device address.
7 - interrupt-controller: AS3722 has internal interrupt controller which takes the
8 interrupt request from internal sub-blocks like RTC, regulators, GPIOs as well
10 - #interrupt-cells: Should be set to 2 for IRQ number and flags.
12 of AS3722 are defined at dt-bindings/mfd/as3722.h
14 interrupts.txt, using dt-bindings/irq.
17 --------------------
18 - ams,enable-internal-int-pullup: Boolean property, to enable internal pullup on
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| H A D | mscc,ocelot.yaml | 1 # SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Ocelot Externally-Controlled Ethernet Switch
10 - Colin Foster <colin.foster@in-advantage.com>
15 the option to be controlled externally via external interfaces like SPI or
18 The switch family is a multi-port networking switch that supports many
20 external GPIO expanders.
25 - mscc,vsc7512
30 "#address-cells":
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| /linux/Documentation/arch/arm/pxa/ |
| H A D | mfp.rst | 7 MFP stands for Multi-Function Pin, which is the pin-mux logic on PXA3xx and
14 Unlike the GPIO alternate function settings on PXA25x and PXA27x, a new MFP
15 mechanism is introduced from PXA3xx to completely move the pin-mux functions
16 out of the GPIO controller. In addition to pin-mux configurations, the MFP
17 also controls the low power state, driving strength, pull-up/down and event
21 +--------+
22 | |--(GPIO19)--+
23 | GPIO | |
24 | |--(GPIO...) |
25 +--------+ |
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| /linux/drivers/clk/ |
| H A D | clk-gpio.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2013 - 2014 Texas Instruments Incorporated - https://www.ti.com
9 * Gpio controlled clock implementation
12 #include <linux/clk-provider.h>
15 #include <linux/gpio/consumer.h>
23 * DOC: basic gpio gated clock which can be enabled and disabled
24 * with gpio output
26 * prepare - clk_(un)prepare are functional and control a gpio that can sleep
27 * enable - clk_enable and clk_disable are functional & control
28 * non-sleeping gpio
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| /linux/Documentation/devicetree/bindings/input/ |
| H A D | gpio-beeper.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/input/gpio-beeper.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: GPIO controlled beeper
10 - Fabio Estevam <festevam@denx.de>
14 const: gpio-beeper
19 GPIO that drives the beeper.
22 - compatible
23 - gpios
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| H A D | gpio-vibrator.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/input/gpio-vibrator.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: GPIO vibrator
10 - Luca Weiss <luca@z3ntu.xyz>
13 Registers a GPIO device as vibrator, where the on/off capability is controlled by a GPIO.
17 const: gpio-vibrator
19 enable-gpios:
22 vcc-supply:
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