Home
last modified time | relevance | path

Searched +full:gpio +full:- +full:open +full:- +full:drain (Results 1 – 25 of 55) sorted by relevance

123

/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#
7 title: GPIO bitbanged I2C
10 - Wolfram Sang <wsa@kernel.org>
13 - $ref: /schemas/i2c/i2c-controller.yaml#
18 - const: i2c-gpio
20 sda-gpios:
22 gpio used for the sda signal, this should be flagged as
[all …]
/Documentation/driver-api/gpio/
Dintro.rst6 GPIO Interfaces
14 What is a GPIO?
17 A "General Purpose Input/Output" (GPIO) is a flexible software-controlled
19 to Linux developers working with embedded and custom hardware. Each GPIO
25 System-on-Chip (SOC) processors heavily rely on GPIOs. In some cases, every
26 non-dedicated pin can be configured as a GPIO; and most chips have at least
30 also "GPIO Expander" chips that connect using the I2C or SPI serial buses.
31 Most PC southbridges have a few dozen GPIO-capable pins (with only the BIOS
36 - Output values are writable (high=1, low=0). Some chips also have
38 value might be driven, supporting "wire-OR" and similar schemes for the
[all …]
Dconsumer.rst2 GPIO Descriptor Consumer Interface
5 This document describes the consumer interface of the GPIO framework.
11 Drivers that can't work without standard GPIO calls should have Kconfig entries
15 #include <linux/gpio/consumer.h>
21 - Simple compile coverage with e.g. COMPILE_TEST - it does not matter that
25 - Truly optional GPIOLIB support - where the driver does not really make use
26 of the GPIOs on certain compile-time configurations for certain systems, but
27 will use it under other compile-time configurations. In this case the
33 some open coding of error handling should be expected when you do this.
35 All the functions that work with the descriptor-based GPIO interface are
[all …]
Ddriver.rst2 GPIO Driver Interface
5 This document serves as a guide for writers of GPIO chip drivers.
7 Each GPIO controller driver needs to include the following header, which defines
8 the structures used to define a GPIO driver::
10 #include <linux/gpio/driver.h>
16 A GPIO chip handles one or more GPIO lines. To be considered a GPIO chip, the
18 line is not general purpose, it is not GPIO and should not be handled by a
19 GPIO chip. The use case is the indicative: certain lines in a system may be
20 called GPIO but serve a very particular purpose thus not meeting the criteria
22 GPIO and should therefore still be handled by a GPIO chip driver.
[all …]
/Documentation/devicetree/bindings/serio/
Dps2-gpio.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/serio/ps2-gpio.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: GPIO based PS/2
10 - Danilo Krummrich <danilokrummrich@dk-develop.de>
14 const: ps2-gpio
16 data-gpios:
18 the gpio used for the data signal - this should be flagged as
19 active high using open drain with (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)
[all …]
/Documentation/devicetree/bindings/w1/
Dw1-gpio.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/w1/w1-gpio.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Bitbanged GPIO 1-Wire Bus
10 - Daniel Mack <zonque@gmail.com>
14 const: w1-gpio
19 - description: Data I/O pin
20 - description: Enable pin for an external pull-up resistor
22 linux,open-drain:
[all …]
/Documentation/devicetree/bindings/regulator/
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 …]
Dgpio-regulator.yaml1 # 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
[all …]
/Documentation/devicetree/bindings/mfd/
Dst,stmfx.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: STMicroelectonics Multi-Function eXpander (STMFX)
9 description: ST Multi-Function eXpander (STMFX) is a slave controller using I2C for
10 communication with the main MCU. Its main features are GPIO expansion,
15 - Amelie Delaunay <amelie.delaunay@foss.st.com>
19 const: st,stmfx-0300
27 drive-open-drain: true
29 vdd-supply: 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#
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:
24 - const: rohm,bd71879
[all …]
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#
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
32 "#gpio-cells":
[all …]
/Documentation/devicetree/bindings/pinctrl/
Dawinic,aw9523-pinctrl.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/pinctrl/awinic,aw9523-pinctrl.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Awinic AW9523/AW9523B I2C GPIO Expander
10 - AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
13 The Awinic AW9523/AW9523B I2C GPIO Expander featuring 16 multi-function
18 const: awinic,aw9523-pinctrl
23 '#gpio-cells':
26 include/dt-bindings/gpio/gpio.h
[all …]
Dpinctrl-palmas.txt4 the configuration for Pull UP/DOWN, open drain etc.
7 - compatible: It must be one of following:
8 - "ti,palmas-pinctrl" for Palma series of the pincontrol.
9 - "ti,tps65913-pinctrl" for Palma series device TPS65913.
10 - "ti,tps80036-pinctrl" for Palma series device TPS80036.
12 Please refer to pinctrl-bindings.txt in this directory for details of the
19 those pin(s), and various pin configuration parameters, such as pull-up,
20 open drain.
32 - ti,palmas-enable-dvfs1: Enable DVFS1. Configure pins for DVFS1 mode.
35 - ti,palmas-enable-dvfs2: Enable DVFS2. Configure pins for DVFS2 mode.
[all …]
Dlantiq,pinctrl-xway.txt4 - compatible: "lantiq,<chip>-pinctrl", where <chip> is:
10 - reg: Should contain the physical address and length of the gpio/pinmux
13 Please refer to pinctrl-bindings.txt in this directory for details of the
21 pull-up and open-drain
36 Required subnode-properties:
37 - lantiq,groups : An array of strings. Each string contains the name of a group.
39 - lantiq,function: A string containing the name of the function to mux to the
106 Required subnode-properties:
107 - lantiq,pins : An array of strings. Each string contains the name of a pin.
110 Optional subnode-properties:
[all …]
Dsemtech,sx1501q.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: Semtech SX150x GPIO expander
11 - Neil Armstrong <neil.armstrong@linaro.org>
16 - semtech,sx1501q
17 - semtech,sx1502q
18 - semtech,sx1503q
19 - semtech,sx1504q
20 - semtech,sx1505q
[all …]
Dintel,lgm-io.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/pinctrl/intel,lgm-io.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Intel Lightning Mountain SoC pinmux & GPIO controller
10 - Rahul Tanwar <rahul.tanwar@linux.intel.com>
13 Pinmux & GPIO controller controls pin multiplexing & configuration including
14 GPIO function selection & GPIO attributes configuration.
18 const: intel,lgm-io
25 '-pins$':
[all …]
Dcypress,cy8c95x0.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Cypress CY8C95X0 I2C GPIO expander
10 - Patrick Rudolph <patrick.rudolph@9elements.com>
13 This supports the 20/40/60 pin Cypress CYC95x0 GPIO I2C expanders.
14 Pin function configuration is performed on a per-pin basis.
19 - cypress,cy8c9520
20 - cypress,cy8c9540
21 - cypress,cy8c9560
[all …]
Dpinctrl-mcp23s08.txt2 8-/16-bit I/O expander with serial interface (I2C/SPI)
5 - compatible : Should be
6 - "mcp,mcp23s08" (DEPRECATED) for 8 GPIO SPI version
7 - "mcp,mcp23s17" (DEPRECATED) for 16 GPIO SPI version
8 - "mcp,mcp23008" (DEPRECATED) for 8 GPIO I2C version or
9 - "mcp,mcp23017" (DEPRECATED) for 16 GPIO I2C version of the chip
11 - "microchip,mcp23s08" for 8 GPIO SPI version
12 - "microchip,mcp23s17" for 16 GPIO SPI version
13 - "microchip,mcp23s18" for 16 GPIO SPI version
14 - "microchip,mcp23008" for 8 GPIO I2C version or
[all …]
/Documentation/devicetree/bindings/gpio/
Dibm,ppc4xx-gpio.txt1 * IBM/AMCC/APM GPIO Controller for PowerPC 4XX series and compatible SoCs
3 All GPIOs are pin-shared with other functions. DCRs control whether a
4 particular pin that has GPIO capabilities acts as a GPIO or is used for
5 another purpose. GPIO outputs are separately programmable to emulate
6 an open-drain driver.
9 - compatible: must be "ibm,ppc4xx-gpio"
10 - reg: address and length of the register set for the device
11 - #gpio-cells: must be set to 2. The first cell is the pin number
12 and the second cell is used to specify the gpio polarity:
15 - gpio-controller: marks the device node as a gpio controller.
[all …]
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#
7 title: GPIO delay controller
10 - Alexander Stein <linux@ew.tq-group.com>
13 This binding describes an electrical setup where setting an GPIO output
16 +----------+ +-----------+
20 | GPIO | | | R | Consumer |
23 | [IOx|-------| |--+-----|-----+ |
[all …]
/Documentation/devicetree/bindings/sound/
Dcirrus,cs35l45.yaml1 # 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:
[all …]
/Documentation/devicetree/bindings/net/dsa/
Dqca8k.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - John Crispin <john@phrozen.org>
13 If the QCA8K switch is connect to an SoC's external mdio-bus, each subnode
16 ID. To declare the internal mdio-bus configuration, declare an MDIO node in
18 PHY it is connected to. In this config, an internal mdio-bus is registered and
20 mdio-bus configurations are not supported by the hardware.
27 - enum:
28 - qca,qca8327
[all …]
/Documentation/devicetree/bindings/iio/gyroscope/
Dnxp,fxas21002c.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Rui Miguel Silva <rmfrfs@gmail.com>
14 http://www.nxp.com/products/sensors/gyroscopes/3-axis-digital-gyroscope:FXAS21002C
23 vdd-supply:
26 vddio-supply:
29 reset-gpios:
31 description: GPIO connected to reset
38 interrupt-names:
[all …]
/Documentation/devicetree/bindings/media/cec/
Dcec-gpio.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/media/cec/cec-gpio.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: HDMI CEC GPIO
10 - Hans Verkuil <hverkuil-cisco@xs4all.nl>
13 The HDMI CEC GPIO module supports CEC implementations where the CEC line is
14 hooked up to a pull-up GPIO line and - optionally - the HPD line is hooked up
15 to another GPIO line.
19 circuitry when connecting them to a GPIO line.
[all …]
/Documentation/devicetree/bindings/iio/imu/
Dnxp,fxos8700.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Jonathan Cameron <jic23@kernel.org>
14 …ps://www.nxp.com/products/sensors/motion-sensors/6-axis/digital-motion-sensor-3d-accelerometer-2g-…
19 - nxp,fxos8700
28 interrupt-names:
33 - INT1
34 - INT2
36 drive-open-drain:
[all …]

123