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/linux/arch/arm64/boot/dts/nvidia/
H A Dtegra210-p2571.dts1 // 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>;
[all …]
H A Dtegra210-p2595.dtsi1 // 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>;
[all …]
H A Dtegra210-p2597.dtsi1 // 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)
[all …]
H A Dtegra210-p2894.dtsi1 // 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>;
[all …]
/linux/Documentation/devicetree/bindings/i2c/
H A 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#
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
[all …]
/linux/arch/arm/boot/dts/nuvoton/
H A Dnuvoton-npcm730-gsj-gpio.dtsi1 // 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;
[all …]
/linux/Documentation/driver-api/gpio/
H A Dintro.rst17 A "General Purpose Input/Output" (GPIO) is a flexible software-controlled
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
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
39 other value (notably, "open drain" signaling).
41 - Input values are likewise readable (1, 0). Some chips support readback
42 of pins configured as "output", which is very useful in such "wire-OR"
44 input de-glitch/debounce logic, sometimes with software controls.
[all …]
H A Dconsumer.rst21 - 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
45 With the descriptor-based interface, GPIOs are identified with an opaque,
46 non-forgeable handler that must be obtained through a call to one of the
62 see Documentation/driver-api/gpio/board.rst
73 to be electrically used with open drain.
[all …]
H A Ddriver.rst26 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
[all …]
/linux/drivers/w1/masters/
H A Dw1-gpio.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * w1-gpio - GPIO w1 bus master driver
31 ddata->pullup_duration = delay; in w1_gpio_set_pullup()
33 if (ddata->pullup_duration) { in w1_gpio_set_pullup()
35 * This will OVERRIDE open drain emulation and force-pull in w1_gpio_set_pullup()
38 gpiod_set_raw_value(ddata->gpiod, 1); in w1_gpio_set_pullup()
39 msleep(ddata->pullup_duration); in w1_gpio_set_pullup()
42 * open drain emulation in the GPIO library. in w1_gpio_set_pullup()
44 gpiod_set_value(ddata->gpiod, 1); in w1_gpio_set_pullup()
46 ddata->pullup_duration = 0; in w1_gpio_set_pullup()
[all …]
/linux/include/linux/platform_data/
H A Di2c-gpio.h1 /* 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.
/linux/include/dt-bindings/gpio/
H A Dgpio.h1 /* 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.
/linux/Documentation/devicetree/bindings/serio/
H A 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#
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
[all …]
/linux/Documentation/devicetree/bindings/pwm/
H A Dnxp,pca9685-pwm.txt1 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;
/linux/Documentation/devicetree/bindings/pinctrl/
H A 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 …]
H A Dnvidia,tegra-pinmux-common.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/pinctrl/nvidia,tegra-pinmux-common.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Thierry Reding <thierry.reding@gmail.com>
11 - Jonathan Hunter <jonathanh@nvidia.com>
14 Please refer to pinctrl-bindings.txt in this directory for details of the
22 pin configuration parameters, such as pull-up, tristate, drive strength,
46 $ref: /schemas/types.yaml#/definitions/string-array
57 description: Pull-down/up setting to apply to the pin.
[all …]
H A 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 …]
/linux/drivers/gpio/
H A Dgpio-tps65218.c1 // 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()
[all …]
H A Dgpio-tc3589x.c1 // 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()
[all …]
/linux/arch/arm/boot/dts/st/
H A Dste-href-tvk1281618-r2.dtsi1 // 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>;
[all …]
/linux/Documentation/devicetree/bindings/w1/
H A 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 …]
/linux/Documentation/devicetree/bindings/regulator/
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 …]
/linux/Documentation/devicetree/bindings/iio/humidity/
H A Dst,hts221.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Lorenzo Bianconi <lorenzo@kernel.org>
23 drive-open-drain:
26 The interrupt/data ready line will be configured as open drain, which
29 vdd-supply: true
35 - compatible
36 - reg
41 - |
[all …]
/linux/arch/arm/boot/dts/nvidia/
H A Dtegra124-nyan-blaze.dts1 // SPDX-License-Identifier: GPL-2.0
2 /dts-v1/;
4 #include "tegra124-nyan.dtsi"
6 #include "tegra124-nyan-blaze-emc.dtsi"
10 compatible = "google,nyan-blaze-rev10", "google,nyan-blaze-rev9",
11 "google,nyan-blaze-rev8", "google,nyan-blaze-rev7",
12 "google,nyan-blaze-rev6", "google,nyan-blaze-rev5",
13 "google,nyan-blaze-rev4", "google,nyan-blaze-rev3",
14 "google,nyan-blaze-rev2", "google,nyan-blaze-rev1",
15 "google,nyan-blaze-rev0", "google,nyan-blaze",
[all …]
H A Dtegra124-nyan-big.dts1 // SPDX-License-Identifier: GPL-2.0
2 /dts-v1/;
4 #include "tegra124-nyan.dtsi"
6 #include "tegra124-nyan-big-emc.dtsi"
9 model = "Acer Chromebook 13 CB5-311";
10 compatible = "google,nyan-big-rev7", "google,nyan-big-rev6",
11 "google,nyan-big-rev5", "google,nyan-big-rev4",
12 "google,nyan-big-rev3", "google,nyan-big-rev2",
13 "google,nyan-big-rev1", "google,nyan-big-rev0",
14 "google,nyan-big", "google,nyan", "nvidia,tegra124";
[all …]

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