| /linux/Documentation/devicetree/bindings/net/dsa/ |
| H A D | qca8k.yaml | 1 # 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
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| /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;
|
| /linux/Documentation/driver-api/gpio/ |
| H A D | intro.rst | 17 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.
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| H A D | board.rst | 14 -----------
20 <function>-gpios, where <function> is the function the driver will request
26 led-gpios = <&gpio 15 GPIO_ACTIVE_HIGH>, /* red */
30 power-gpios = <&gpio 1 GPIO_ACTIVE_LOW>;
33 Properties named <function>-gpio are also considered valid and old bindings use
38 "led" function, and GPIO 1 as the "power" GPIO::
42 red = gpiod_get_index(dev, "led", 0, GPIOD_OUT_HIGH);
43 green = gpiod_get_index(dev, "led", 1, GPIOD_OUT_HIGH);
44 blue = gpiod_get_index(dev, "led", 2, GPIOD_OUT_HIGH);
48 The led GPIOs will be active high, while the power GPIO will be active low (i.e.
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| H A D | consumer.rst | 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
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
54 If a function is implemented by using several GPIOs together (e.g. a simple LED
62 see Documentation/driver-api/gpio/board.rst
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| H A D | driver.rst | 21 of a general purpose I/O. On the other hand a LED driver line may be used as a
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
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| /linux/arch/arm/boot/dts/microchip/ |
| H A D | at91-kizbox3-hs.dts | 1 // SPDX-License-Identifier: GPL-2.0
3 * at91-kizbox3-hs.dts - Device Tree file for Overkiz KIZBOX3-HS board
11 /dts-v1/;
12 #include "at91-kizbox3_common.dtsi"
15 model = "Overkiz KIZBOX3-HS";
16 compatible = "overkiz,kizbox3-hs", "atmel,sama5d2", "atmel,sama5";
18 led-controller-1 {
21 led-1 {
25 led-2 {
29 led-3 {
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| H A D | at91-foxg20.dts | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * at91-foxg20.dts - Device Tree file for Acme Systems FoxG20 board
9 /dts-v1/;
26 clock-frequency = <32768>;
30 clock-frequency = <18432000>;
38 compatible = "atmel,tcb-timer";
43 compatible = "atmel,tcb-timer";
49 atmel,vbus-gpio = <&pioC 6 GPIO_ACTIVE_HIGH>;
54 pinctrl-0 = <
58 pinctrl-names = "default";
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| H A D | at91sam9x5cm.dtsi | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * at91sam9x5cm.dtsi - Device Tree Include file for AT91SAM9x5 CPU Module
16 clock-frequency = <32768>;
20 clock-frequency = <12000000>;
28 compatible = "atmel,tcb-timer";
33 compatible = "atmel,tcb-timer";
40 pinctrl_1wire_cm: 1wire_cm-0 {
41 …<AT91_PIOB 18 AT91_PERIPH_GPIO AT91_PINCTRL_MULTI_DRIVE>; /* PB18 multidrive, conflicts with led */
52 pinctrl-0 = <&pinctrl_ebi_addr_nand
54 pinctrl-names = "default";
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| H A D | at91-kizbox3_common.dtsi | 1 // SPDX-License-Identifier: GPL-2.0
3 * at91-kizbox3.dts - Device Tree Include file for Overkiz Kizbox 3
12 /dts-v1/;
14 #include "sama5d2-pinfunc.h"
15 #include <dt-bindings/gpio/gpio.h>
16 #include <dt-bindings/mfd/atmel-flexcom.h>
17 #include <dt-bindings/pinctrl/at91.h>
18 #include <dt-bindings/pwm/pwm.h>
36 stdout-path = "serial1:115200n8";
41 clock-frequency = <32768>;
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| /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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| H A D | nvidia,tegra234-pinmux-common.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/pinctrl/nvidia,tegra234-pinmux-common.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Thierry Reding <thierry.reding@gmail.com>
11 - Jon Hunter <jonathanh@nvidia.com>
13 $ref: nvidia,tegra-pinmux-common.yaml
23 dmic3, led, vi0_alt, i2s5, nv, extperiph3, extperiph4, spi4,
33 nvidia,enable-input: true
34 nvidia,open-drain: true
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| H A D | lantiq,pinctrl-falcon.txt | 4 - compatible: "lantiq,pinctrl-falcon"
5 - reg: Should contain the physical address and length of the gpio/pinmux
8 Please refer to pinctrl-bindings.txt in this directory for details of the
16 pull-up and open-drain
31 Required subnode-properties:
32 - lantiq,groups : An array of strings. Each string contains the name of a group.
34 - lantiq,function: A string containing the name of the function to mux to the
44 rst, ntr, mdio, led, asc, spi, i2c, jtag, slic, pcm
49 Required subnode-properties:
50 - lantiq,pins : An array of strings. Each string contains the name of a pin.
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| /linux/Documentation/devicetree/bindings/mfd/ |
| H A D | rohm,bd71828-pmic.yaml | 1 # 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
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| /linux/Documentation/devicetree/bindings/leds/ |
| H A D | leds-aw2013.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/leds/leds-aw2013.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: AWINIC AW2013 3-channel LED Driver
10 - Nikita Travkin <nikitos.tr@gmail.com>
13 The AW2013 is a 3-channel LED driver with I2C interface. It can control
14 LED brightness with PWM output.
25 description: Open-drain, low active interrupt pin "INTN".
26 Used to report completion of operations (power up, LED breath effects).
[all …]
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| /linux/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/ |
| H A D | led.c | 1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2009-2010 Realtek Corporation.*/
7 #include "led.h"
83 if (rtlpriv->ledctl.led_opendrain) { in rtl8821ae_sw_led_off()
129 /*Open-drain arrangement for controlling the LED*/ in rtl8812ae_sw_led_off()
130 if (rtlpriv->ledctl.led_opendrain) { in rtl8812ae_sw_led_off()
136 /*Open-drain arrangement*/ in rtl8812ae_sw_led_off()
149 enum rtl_led_pin pin0 = rtlpriv->ledctl.sw_led0; in _rtl8821ae_sw_led_control()
156 if (rtlhal->hw_type == HARDWARE_TYPE_RTL8812AE) in _rtl8821ae_sw_led_control()
162 if (rtlhal->hw_type == HARDWARE_TYPE_RTL8812AE) in _rtl8821ae_sw_led_control()
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| /linux/drivers/leds/ |
| H A D | leds-pca963x.c | 1 // SPDX-License-Identifier: GPL-2.0-only
6 * Author: Peter Meerwald <p.meerwald@bct-electronic.com>
9 * Based on leds-pca955x.c
11 * LED driver for the PCA9633 I2C LED driver (7-bit slave address 0x62)
12 * LED driver for the PCA9634/5 I2C LED driver (7-bit slave address set by hw.)
18 * in identical fashion. The delay_on/delay_off values of the last LED
22 * or by adding the 'nxp,hw-blink' property to the DTS.
36 /* LED select registers determine the source that drives LED outputs */
37 #define PCA963X_LED_OFF 0x0 /* LED driver off */
38 #define PCA963X_LED_ON 0x1 /* LED driver on */
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| /linux/Documentation/devicetree/bindings/input/ |
| H A D | microchip,cap11xx.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 The Microchip CAP1xxx Family of RightTouchTM multiple-channel capacitive
11 touch controllers and LED drivers. The device communication via I2C only.
14 - Rob Herring <robh@kernel.org>
19 - microchip,cap1106
20 - microchip,cap1126
21 - microchip,cap1188
22 - microchip,cap1203
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| /linux/Documentation/devicetree/bindings/gpio/ |
| H A D | gpio.txt | 5 -----------------
7 GPIO properties should be named "[<name>-]gpios", with <name> being the purpose
8 of this GPIO for the device. While a non-existent <name> is considered valid
10 for new bindings. Also, GPIO properties named "[<name>-]gpio" are valid and old
24 and bit-banged data signals:
27 gpio-controller;
28 #gpio-cells = <2>;
32 data-gpios = <&gpio1 12 0>,
39 such as if the consumer desire the line to be active low (inverted) or open
40 drain. This is the recommended practice.
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| /linux/arch/arm64/boot/dts/amlogic/ |
| H A D | meson-libretech-cottonwood.dtsi | 1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
7 #include <dt-bindings/clock/g12a-clkc.h>
8 #include <dt-bindings/input/input.h>
9 #include <dt-bindings/leds/common.h>
10 #include <dt-bindings/gpio/gpio.h>
11 #include <dt-bindings/gpio/meson-g12a-gpio.h>
12 #include <dt-bindings/sound/meson-g12a-toacodec.h>
13 #include <dt-bindings/sound/meson-g12a-tohdmitx.h>
28 stdout-path = "serial0:115200n8";
31 dioo2133: audio-amplifier-0 {
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| /linux/drivers/watchdog/ |
| H A D | smsc37b787_wdt.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
9 * any of this software. This material is provided "AS-IS" in
12 * (C) Copyright 2003-2006 Sven Anders <anders@anduras.de>
15 * 2003 - Created version 1.0 for Linux 2.4.x.
16 * 2006 - Ported to Linux 2.6, added nowayout and MAGICCLOSE
38 * For an example userspace keep-alive daemon, see:
86 /* -- Low level function ----------------------------------------*/
124 /* -- Medium level functions ------------------------------------*/
128 /* -- General Purpose I/O Bit 1.2 -- in gpio_bit12()
135 * Bit 7, Output Type: 0 = Push Pull Bit, 1 = Open Drain in gpio_bit12()
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| /linux/arch/powerpc/boot/dts/ |
| H A D | wii.dts | 1 // SPDX-License-Identifier: GPL-2.0-or-later
6 * Copyright (C) 2008-2009 The GameCube Linux Team
10 /dts-v1/;
11 #include <dt-bindings/gpio/gpio.h>
12 #include <dt-bindings/input/input.h>
15 * This is commented-out for now.
25 #address-cells = <1>;
26 #size-cells = <1>;
29 bootargs = "root=/dev/mmcblk0p2 rootwait udbg-immortal";
34 reg = <0x00000000 0x01800000 /* MEM1 24MB 1T-SRAM */
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| /linux/drivers/pinctrl/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
66 will be called pinctrl-apple-gpio.
69 bool "Axis ARTPEC-6 pin controller driver"
74 This is the driver for the Axis ARTPEC-6 pin controller. This driver
77 found in Documentation/devicetree/bindings/pinctrl/axis,artpec6-pinctrl.txt
86 functionality. This driver supports the pinmux, push-pull and
87 open drain configuration for the GPIO pins of AS3722 devices. It also
117 tristate "X-Powers AXP209 PMIC pinctrl and GPIO Support"
141 The Awinic AW9523/AW9523B is a multi-function I2C GPIO
168 called pinctrl-cy8c95x0.
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| /linux/include/linux/mfd/ |
| H A D | tps65010.h | 34 * ----------------------------------------------------------------------------
36 * ----------------------------------------------------------------------------
109 * ----------------------------------------------------------------------------
111 * ----------------------------------------------------------------------------
127 * ----------------------------------------------------------------------------
129 * ----------------------------------------------------------------------------
133 * 0 mA -- DON'T DRAW (might supply power instead)
134 * 100 mA -- usb unit load (slowest charge rate)
135 * 500 mA -- usb high power (fast battery charge)
146 * led: LED1 or LED2
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| /linux/drivers/gpio/ |
| H A D | gpio-winbond.c | 1 // SPDX-License-Identifier: GPL-2.0+
145 return -EBUSY; in winbond_sio_enter()
206 * struct winbond_gpio_port_conflict - possibly conflicting device information
209 * is located (or WB_SIO_DEV_NONE - don't select any
226 * struct winbond_gpio_info - information about a particular GPIO port (device)
232 * @outputppbit: index of a push-pull output driver mode bit
361 *gpio_num -= 8; in winbond_gpio_get_info()
396 winbond_sio_select_logical(*base, info->dev); in winbond_gpio_get()
398 val = winbond_sio_reg_btest(*base, info->datareg, offset); in winbond_gpio_get()
399 if (winbond_sio_reg_btest(*base, info->invreg, offset)) in winbond_gpio_get()
[all …]
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