| /openbmc/linux/arch/arm64/boot/dts/nvidia/ |
| H A D | tegra210-p2571.dts | 1 // SPDX-License-Identifier: GPL-2.0
2 /dts-v1/;
4 #include <dt-bindings/input/input.h>
5 #include "tegra210-p2530.dtsi"
12 pinctrl-names = "boot";
13 pinctrl-0 = <&state_boot>;
20 nvidia,enable-input = <TEGRA_PIN_ENABLE>;
21 nvidia,open-drain = <TEGRA_PIN_DISABLE>;
22 nvidia,io-hv = <TEGRA_PIN_DISABLE>;
29 nvidia,enable-input = <TEGRA_PIN_DISABLE>;
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| H A D | tegra210-p2595.dtsi | 1 // SPDX-License-Identifier: GPL-2.0
3 #include <dt-bindings/pinctrl/pinctrl-tegra.h>
10 pinctrl-names = "boot";
11 pinctrl-0 = <&state_boot>;
19 nvidia,enable-input = <TEGRA_PIN_DISABLE>;
20 nvidia,open-drain = <TEGRA_PIN_DISABLE>;
21 nvidia,io-hv = <TEGRA_PIN_ENABLE>;
28 nvidia,enable-input = <TEGRA_PIN_ENABLE>;
29 nvidia,open-drain = <TEGRA_PIN_DISABLE>;
30 nvidia,io-hv = <TEGRA_PIN_ENABLE>;
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| H A D | tegra210-p2597.dtsi | 1 // SPDX-License-Identifier: GPL-2.0
3 #include <dt-bindings/gpio/tegra-gpio.h>
4 #include <dt-bindings/input/input.h>
5 #include <dt-bindings/pinctrl/pinctrl-tegra.h>
23 avdd-dsi-csi-supply = <&vdd_dsi_csi>;
33 avdd-io-hdmi-dp-supply = <&avdd_1v05>;
34 vdd-hdmi-dp-pll-supply = <&vdd_1v8>;
35 hdmi-supply = <&vdd_hdmi>;
37 nvidia,ddc-i2c-bus = <&hdmi_ddc>;
38 nvidia,hpd-gpio = <&gpio TEGRA_GPIO(CC, 1)
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| H A D | tegra210-p2894.dtsi | 1 // SPDX-License-Identifier: GPL-2.0
3 #include <dt-bindings/input/input.h>
4 #include <dt-bindings/input/gpio-keys.h>
5 #include <dt-bindings/mfd/max77620.h>
6 #include <dt-bindings/pinctrl/pinctrl-tegra.h>
16 stdout-path = "serial0:115200n8";
26 pinctrl-names = "boot";
27 pinctrl-0 = <&state_boot>;
35 nvidia,enable-input = <TEGRA_PIN_DISABLE>;
36 nvidia,open-drain = <TEGRA_PIN_DISABLE>;
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| H A D | tegra210-smaug.dts | 1 // SPDX-License-Identifier: GPL-2.0
2 /dts-v1/;
4 #include <dt-bindings/input/input.h>
5 #include <dt-bindings/mfd/max77620.h>
6 #include <dt-bindings/pinctrl/pinctrl-tegra.h>
12 compatible = "google,smaug-rev8", "google,smaug-rev7",
13 "google,smaug-rev6", "google,smaug-rev5",
14 "google,smaug-rev4", "google,smaug-rev3",
15 "google,smaug-rev2", "google,smaug-rev1",
25 stdout-path = "serial0:115200n8";
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| /openbmc/linux/Documentation/devicetree/bindings/i2c/ |
| H A D | i2c-gpio.yaml | 1 # 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 <wsa@kernel.org>
13 - $ref: /schemas/i2c/i2c-controller.yaml#
18 - const: i2c-gpio
20 sda-gpios:
23 active high using open drain with (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)
24 from <dt-bindings/gpio/gpio.h> since the signal is by definition
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| /openbmc/linux/arch/arm/boot/dts/nuvoton/ |
| H A D | nuvoton-npcm730-gsj-gpio.dtsi | 1 // SPDX-License-Identifier: GPL-2.0
6 gpio0pp_pins: gpio0pp-pins {
8 bias-disable;
9 drive-push-pull;
11 gpio1pp_pins: gpio1pp-pins {
13 bias-disable;
14 drive-push-pull;
16 gpio2pp_pins: gpio2pp-pins {
18 bias-disable;
19 drive-push-pull;
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| /openbmc/linux/Documentation/driver-api/gpio/ |
| H A D | intro.rst | 16 - The descriptor-based interface is the preferred way to manipulate GPIOs,
18 - The legacy integer-based interface which is considered deprecated (but still
21 The remainder of this document applies to the new descriptor-based interface.
23 integer-based interface.
29 A "General Purpose Input/Output" (GPIO) is a flexible software-controlled
37 System-on-Chip (SOC) processors heavily rely on GPIOs. In some cases, every
38 non-dedicated pin can be configured as a GPIO; and most chips have at least
43 Most PC southbridges have a few dozen GPIO-capable pins (with only the BIOS
48 - Output values are writable (high=1, low=0). Some chips also have
50 value might be driven, supporting "wire-OR" and similar schemes for the
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| H A D | consumer.rst | 6 it describes the new descriptor-based interface. For a description of the
7 deprecated integer-based GPIO interface please refer to legacy.rst.
23 - Simple compile coverage with e.g. COMPILE_TEST - it does not matter that
27 - Truly optional GPIOLIB support - where the driver does not really make use
28 of the GPIOs on certain compile-time configurations for certain systems, but
29 will use it under other compile-time configurations. In this case the
33 All the functions that work with the descriptor-based GPIO interface are
43 With the descriptor-based interface, GPIOs are identified with an opaque,
44 non-forgeable handler that must be obtained through a call to one of the
60 see Documentation/driver-api/gpio/board.rst
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| H A D | driver.rst | 26 between 0 and n-1, n being the number of GPIOs managed by the chip.
29 example if a system uses a memory-mapped set of I/O-registers where 32 GPIO
30 lines are handled by one bit per line in a 32-bit register, it makes sense to
44 So for example one platform could use global numbers 32-159 for GPIOs, with a
46 global numbers 0..63 with one set of GPIO controllers, 64-79 with another type
47 of GPIO controller, and on one particular board 80-95 with an FPGA. The legacy
49 2000-2063 to identify GPIO lines in a bank of I2C GPIO expanders.
60 - methods to establish GPIO line direction
61 - methods used to access GPIO line values
62 - method to set electrical configuration for a given GPIO line
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| /openbmc/linux/drivers/w1/masters/ |
| H A D | w1-gpio.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * w1-gpio - GPIO w1 bus master driver
12 #include <linux/w1-gpio.h>
26 pdata->pullup_duration = delay; in w1_gpio_set_pullup()
28 if (pdata->pullup_duration) { in w1_gpio_set_pullup()
30 * This will OVERRIDE open drain emulation and force-pull in w1_gpio_set_pullup()
33 gpiod_set_raw_value(pdata->gpiod, 1); in w1_gpio_set_pullup()
34 msleep(pdata->pullup_duration); in w1_gpio_set_pullup()
37 * open drain emulation in the GPIO library. in w1_gpio_set_pullup()
39 gpiod_set_value(pdata->gpiod, 1); in w1_gpio_set_pullup()
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| /openbmc/u-boot/include/dt-bindings/gpio/ |
| H A D | gpio.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
17 /* Bit 1 express single-endedness */
21 /* Bit 2 express Open drain or open source */
26 * Open Drain/Collector is the combination of single-ended open drain interface.
27 * Open Source/Emitter is the combination of single-ended open source interface.
|
| /openbmc/linux/include/linux/platform_data/ |
| H A D | i2c-gpio.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * i2c-gpio interface to platform code
11 * struct i2c_gpio_platform_data - Platform-dependent data for i2c-gpio
15 * @sda_is_open_drain: SDA is configured as open drain, i.e. the pin
21 * @sda_has_no_pullup: SDA is used in a non-compliant way and has no pull-up.
22 * Therefore disable open-drain.
23 * @scl_is_open_drain: SCL is set up as open drain. Same requirements
26 * @scl_has_no_pullup: SCL is used in a non-compliant way and has no pull-up.
27 * Therefore disable open-drain.
|
| /openbmc/linux/include/dt-bindings/gpio/ |
| H A D | gpio.h | 1 /* SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) */
17 /* Bit 1 express single-endedness */
21 /* Bit 2 express Open drain or open source */
26 * Open Drain/Collector is the combination of single-ended open drain interface.
27 * Open Source/Emitter is the combination of single-ended open source interface.
|
| /openbmc/linux/Documentation/devicetree/bindings/serio/ |
| H A D | ps2-gpio.yaml | 1 # 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#
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)
20 from <dt-bindings/gpio/gpio.h> since the signal is open drain by
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| /openbmc/linux/Documentation/devicetree/bindings/pwm/ |
| H A D | nxp,pca9685-pwm.txt | 1 NXP PCA9685 16-channel 12-bit PWM LED controller
5 - compatible: "nxp,pca9685-pwm"
6 - #pwm-cells: Should be 2. See pwm.yaml in this directory for a description of
12 - invert (bool): boolean to enable inverted logic
13 - open-drain (bool): boolean to configure outputs with open-drain structure;
14 if omitted use totem-pole structure
22 compatible = "nxp,pca9685-pwm";
23 #pwm-cells = <2>;
26 open-drain;
|
| /openbmc/linux/Documentation/devicetree/bindings/pinctrl/ |
| H A D | pinctrl-palmas.txt | 4 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.
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| /openbmc/linux/drivers/gpio/ |
| H A D | gpio-tps65218.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
7 * This driver is based on the gpio-tps65912 implementation.
26 struct tps65218 *tps65218 = tps65218_gpio->tps65218; in tps65218_gpio_get()
30 ret = regmap_read(tps65218->regmap, TPS65218_REG_ENABLE2, &val); in tps65218_gpio_get()
41 struct tps65218 *tps65218 = tps65218_gpio->tps65218; in tps65218_gpio_set()
64 return -EPERM; in tps65218_gpio_input()
70 struct tps65218 *tps65218 = tps65218_gpio->tps65218; in tps65218_gpio_request()
74 dev_err(gc->parent, "can't work as open source\n"); in tps65218_gpio_request()
75 return -EINVAL; in tps65218_gpio_request()
81 dev_err(gc->parent, "GPO1 works only as open drain\n"); in tps65218_gpio_request()
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| H A D | gpio-tc3589x.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) ST-Ericsson SA 2010
5 * Author: Hanumath Prasad <hanumath.prasad@stericsson.com> for ST-Ericsson
6 * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
40 struct tc3589x *tc3589x = tc3589x_gpio->tc3589x; in tc3589x_gpio_get()
55 struct tc3589x *tc3589x = tc3589x_gpio->tc3589x; in tc3589x_gpio_set()
67 struct tc3589x *tc3589x = tc3589x_gpio->tc3589x; in tc3589x_gpio_direction_output()
80 struct tc3589x *tc3589x = tc3589x_gpio->tc3589x; in tc3589x_gpio_direction_input()
91 struct tc3589x *tc3589x = tc3589x_gpio->tc3589x; in tc3589x_gpio_get_direction()
110 struct tc3589x *tc3589x = tc3589x_gpio->tc3589x; in tc3589x_gpio_set_config()
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| /openbmc/u-boot/arch/sandbox/include/asm/ |
| H A D | gpio.h | 1 /* SPDX-License-Identifier: GPL-2.0+ */
4 * wants to change the GPIO values reported to U-Boot.
13 * We use the generic interface, and add a back-channel.
15 * The back-channel functions are declared in this file. They should not be used
19 * a simulated GPIO. From then on, normal code in U-Boot will see this new
24 #include <asm-generic/gpio.h>
31 * @return -1 on error, 0 if GPIO is low, >0 if high
40 * @param value value to set (0 for low, non-zero for high)
41 * @return -1 on error, 0 if ok
46 * Set or reset the simulated open drain mode of a GPIO (used only in sandbox
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| /openbmc/qemu/python/qemu/machine/ |
| H A D | console_socket.py | 5 which can drain a socket and optionally dump the bytes to file.
13 # the COPYING file in the top-level directory.
31 :param drain: Optionally, drains the socket and places the bytes
38 drain: bool = False):
55 # pylint: disable=consider-using-with
56 self._logfile = open(file, "bw")
59 if drain:
62 def __repr__(self) -> str:
69 def _drain_fn(self) -> None:
70 """Drains the socket and runs while the socket is open."""
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| /openbmc/linux/arch/arm/boot/dts/st/ |
| H A D | ste-href-tvk1281618-r2.dtsi | 1 // SPDX-License-Identifier: GPL-2.0-or-later
6 #include <dt-bindings/interrupt-controller/irq.h>
7 #include <dt-bindings/input/input.h>
11 compatible = "gpio-keys";
12 #address-cells = <1>;
13 #size-cells = <0>;
14 vdd-supply = <&ab8500_ldo_aux1_reg>;
15 pinctrl-names = "default";
16 pinctrl-0 = <&prox_tvk_mode>, <&hall_tvk_mode>;
37 interrupt-parent = <&gpio6>;
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| /openbmc/linux/Documentation/devicetree/bindings/w1/ |
| H A D | w1-gpio.yaml | 1 # 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:
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| /openbmc/qemu/hw/gpio/ |
| H A D | stm32l4x5_gpio.c | 4 * Copyright (c) 2024 Arnaud Minier <arnaud.minier@telecom-paris.fr>
5 * Copyright (c) 2024 Inès Varhol <ines.varhol@telecom-paris.fr>
7 * SPDX-License-Identifier: GPL-2.0-or-later
10 * See the COPYING file in the top-level directory.
15 * for STM32L4x5 and STM32L4x6 advanced Arm ® -based 32-bit MCUs.
16 * https://www.st.com/en/microcontrollers-microprocessors/stm32l4x5/documentation.html
24 #include "hw/qdev-clock.h"
25 #include "hw/qdev-properties.h"
51 return extract32(s->pupdr, 2 * pin, 2) == 1; in is_pull_up()
56 return extract32(s->pupdr, 2 * pin, 2) == 2; in is_pull_down()
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| /openbmc/linux/Documentation/devicetree/bindings/regulator/ |
| H A D | fixed-regulator.yaml | 1 # 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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