| /openbmc/linux/drivers/gpio/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
10 You only need to enable this if you also want to enable
18 int "Maximum number of GPIOs for fast path"
47 this symbol, but new drivers should use the generic gpio-regmap
55 These checks help ensure that GPIOs have been properly initialized
57 non-sleeping contexts. They can make bitbanged serial protocols
66 Say Y here to add the legacy sysfs interface for GPIOs.
78 for GPIOs. The character device allows userspace to control GPIOs
118 Enables support for the idio-16 library functions. The idio-16 library
120 ACCES IDIO-16 family such as the 104-IDIO-16 and the PCI-IDIO-16.
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| H A D | gpiolib-of.c | 1 // SPDX-License-Identifier: GPL-2.0+
5 * Copyright (c) 2007-2008 MontaVista Software, Inc.
26 #include "gpiolib-of.h"
29 * This is Linux-specific flags. By default controllers' and Linux' mapping
31 * Linux-specific in their .xlate callback. Though, 1:1 mapping is recommended.
44 * of_gpio_named_count() - Count GPIOs for a device
45 * @np: device node to count GPIOs for
48 * The function returns the count of GPIOs specified for a node.
50 * Number of gpios defined in property,
51 * -EINVAL for an incorrectly formed gpios property, or
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| H A D | gpio-winbond.c | 1 // SPDX-License-Identifier: GPL-2.0+
24 /* global chip registers */
132 unsigned long gpios; member
145 return -EBUSY; in winbond_sio_enter()
149 * in order for chip to enter the "Extended Function Mode" 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)
229 * @enablereg: port enable bit register number
230 * @enablebit: index of a port enable bit
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| H A D | gpio-mpc5200.c | 1 // SPDX-License-Identifier: GPL-2.0-only
11 #include <linux/gpio/legacy-of-mm-gpiochip.h>
29 * GPIO LIB API implementation for wakeup GPIOs.
31 * There's a maximum of 8 wakeup GPIOs. Which of these are available
34 * 0 -> GPIO_WKUP_7
35 * 1 -> GPIO_WKUP_6
36 * 2 -> PSC6_1
37 * 3 -> PSC6_0
38 * 4 -> ETH_17
39 * 5 -> PSC3_9
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| H A D | gpio-davinci.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * Copyright (c) 2006-2007 David Brownell
22 #include <linux/platform_data/gpio-davinci.h>
45 #define BINTEN 0x8 /* GPIO Interrupt Per-Bank Enable Register */
52 struct davinci_gpio_controller *chip; member
57 struct gpio_chip chip; member
84 /*--------------------------------------------------------------------------*/
86 /* board setup code *MUST* setup pinmux and enable the GPIO clock. */
87 static inline int __davinci_direction(struct gpio_chip *chip, in __davinci_direction() argument
90 struct davinci_gpio_controller *d = gpiochip_get_data(chip); in __davinci_direction()
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| /openbmc/linux/Documentation/devicetree/bindings/iio/frequency/ |
| H A D | adi,adf4377.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Antoniu Miclaus <antoniu.miclaus@analog.com>
11 - Dragos Bogdan <dragos.bogdan@analog.com>
14 The ADF4377 is a high performance, ultralow jitter, dual output integer-N
24 - adi,adf4377
25 - adi,adf4378
30 spi-max-frequency:
36 clock-names:
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| /openbmc/linux/Documentation/devicetree/bindings/media/i2c/ |
| H A D | sony,imx214.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Sony 1/3.06-Inch 13.13MP CMOS Digital Image Sensor
10 - Ricardo Ribalda <ribalda@kernel.org>
13 The Sony IMX214 is a 1/3.06-inch CMOS active pixel digital image sensor with
15 interface. Image data is sent through MIPI CSI-2, through 2 or 4 lanes at a
19 - $ref: ../video-interface-devices.yaml#
27 - 0x10
28 - 0x1a
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| H A D | aptina,mt9v111.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Jacopo Mondi <jacopo@jmondi.org>
13 The Aptina MT9V111 is a 1/4-Inch VGA-format digital image sensor with a core
17 of image resolutions and formats controllable through a simple two-wires
30 enable-gpios:
31 description: Enable signal, pin name "OE#". Active low.
34 standby-gpios:
39 reset-gpios:
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| /openbmc/linux/drivers/video/fbdev/via/ |
| H A D | via-gpio.c | 1 // SPDX-License-Identifier: GPL-2.0-only
12 #include <linux/via-core.h>
14 #include "via-gpio.h"
17 * The ports we know about. Note that the port-25 gpios are not
30 .vg_name = "VGPIO0", /* Guess - not in datasheet */
70 * This structure controls the active GPIOs, which may be a subset
84 static void via_gpio_set(struct gpio_chip *chip, unsigned int nr, in via_gpio_set() argument
87 struct viafb_gpio_cfg *cfg = gpiochip_get_data(chip); in via_gpio_set()
92 spin_lock_irqsave(&cfg->vdev->reg_lock, flags); in via_gpio_set()
93 gpio = cfg->active_gpios[nr]; in via_gpio_set()
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| /openbmc/linux/Documentation/devicetree/bindings/gpio/ |
| H A D | spear_spics.txt | 10 Chipselects can be controlled by software by turning them as GPIOs. SPEAr
17 * compatible: should be defined as "st,spear-spics-gpio"
19 * st-spics,peripcfg-reg: peripheral configuration register offset
20 * st-spics,sw-enable-bit: bit offset to enable sw control
21 * st-spics,cs-value-bit: bit offset to drive chipselect low or high
22 * st-spics,cs-enable-mask: chip select number bit mask
23 * st-spics,cs-enable-shift: chip select number program offset
24 * gpio-controller: Marks the device node as gpio controller
25 * #gpio-cells: should be 1 and will mention chip select number
30 -------
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| /openbmc/linux/Documentation/devicetree/bindings/regulator/ |
| H A D | richtek,rt6245-regulator.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/regulator/richtek,rt6245-regulator.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - ChiYuan Huang <cy_huang@richtek.com>
13 The RT6245 is a high-performance, synchronous step-down converter
18 - $ref: regulator.yaml#
23 - richtek,rt6245
28 enable-gpios:
30 A connection of the chip 'enable' gpio line. If not provided,
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| H A D | richtek,rtmv20-regulator.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/regulator/richtek,rtmv20-regulator.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - ChiYuan Huang <cy_huang@richtek.com>
14 It is used to drive laser diode. There're two signals for chip controls
15 (Enable/Fail), Enable pin to turn chip on, and Fail pin as fault indication.
27 wakeup-source: true
32 enable-gpios:
33 description: A connection of the 'enable' gpio line.
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| /openbmc/linux/Documentation/devicetree/bindings/input/touchscreen/ |
| H A D | melfas_mip4.txt | 4 - compatible: must be "melfas,mip4_ts"
5 - reg: I2C slave address of the chip (0x48 or 0x34)
6 - interrupts: interrupt to which the chip is connected
9 - ce-gpios: GPIO connected to the CE (chip enable) pin of the chip
16 interrupt-parent = <&gpio>;
18 ce-gpios = <&gpio 0 GPIO_ACTIVE_HIGH>;
|
| H A D | cypress,cy8ctma340.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
14 - Javier Martinez Canillas <javier@dowhile0.org>
15 - Linus Walleij <linus.walleij@linaro.org>
18 - $ref: touchscreen.yaml#
26 - const: cypress,cy8ctma340
27 - const: cypress,cy8ctst341
28 - const: cypress,cyttsp-spi
31 - const: cypress,cyttsp-i2c
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| /openbmc/linux/Documentation/devicetree/bindings/sound/ |
| H A D | nuvoton,nau8315.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: NAU8315/NAU8318 Mono Class-D Amplifier
10 - David Lin <CTLIN0@nuvoton.com>
13 - $ref: dai-common.yaml#
18 - nuvoton,nau8315
19 - nuvoton,nau8318
21 '#sound-dai-cells':
24 enable-gpios:
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| /openbmc/u-boot/drivers/gpio/ |
| H A D | Kconfig | 8 bool "Enable Driver Model for GPIO drivers"
11 Enable driver model for GPIO access. The standard GPIO
14 particular GPIOs that they provide. The uclass interface
15 is defined in include/asm-generic/gpio.h.
18 bool "Enable GPIO hog support"
22 Enable gpio hog support
23 The GPIO chip may contain GPIO hog definitions. GPIO hogging
24 is a mechanism providing automatic GPIO request and config-
25 uration as part of the gpio-controller's driver probe function.
28 bool "Enable GPIO hog support in SPL"
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| /openbmc/linux/Documentation/devicetree/bindings/net/bluetooth/ |
| H A D | qualcomm-bluetooth.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/net/bluetooth/qualcomm-bluetooth.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Balakrishna Godavarthi <bgodavar@codeaurora.org>
11 - Rocky Liao <rjliao@codeaurora.org>
14 This binding describes Qualcomm UART-attached bluetooth chips.
19 - qcom,qca2066-bt
20 - qcom,qca6174-bt
21 - qcom,qca9377-bt
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| /openbmc/linux/Documentation/devicetree/bindings/display/bridge/ |
| H A D | analogix,anx7625.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
4 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Xin Ji <xji@analogixsemi.com>
14 The ANX7625 is an ultra-low power 4K Mobile HD Transmitter
28 enable-gpios:
29 description: used for power on chip control, POWER_EN pin D2.
32 reset-gpios:
33 description: used for reset chip control, RESET_N pin B7.
36 vdd10-supply:
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| /openbmc/linux/Documentation/devicetree/bindings/net/ |
| H A D | realtek-bluetooth.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/net/realtek-bluetooth.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Vasily Khoruzhick <anarsoul@gmail.com>
11 - Alistair Francis <alistair@alistair23.me>
14 RTL8723BS/RTL8723CS/RTL8821CS/RTL8822CS is a WiFi + BT chip. WiFi part
22 - enum:
23 - realtek,rtl8723bs-bt
24 - realtek,rtl8723cs-bt
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| /openbmc/linux/Documentation/devicetree/bindings/misc/ |
| H A D | ifm-csi.txt | 4 - compatible: "ifm,o2d-csi"
5 - reg: specifies sensor chip select number and associated address range
6 - interrupts: external interrupt line number and interrupt sense mode
8 - gpios: three gpio-specifiers for "capture", "reset" and "master enable"
9 GPIOs (strictly in this order).
10 - ifm,csi-clk-handle: the phandle to a node in the DT describing the sensor
12 - ifm,csi-addr-bus-width: address bus width (valid values are 16, 24, 25)
13 - ifm,csi-data-bus-width: data bus width (valid values are 8 and 16)
14 - ifm,csi-wait-cycles: sensor bus wait cycles
17 - ifm,csi-byte-swap: if this property is present, the byte swapping on
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| /openbmc/linux/Documentation/driver-api/gpio/ |
| H A D | board.rst | 5 This document explains how GPIOs can be assigned to given devices and functions.
7 Note that it only applies to the new descriptor-based interface. For a
8 description of the deprecated integer-based GPIO interface please refer to
13 All platforms can enable the GPIO library, but if the platform strictly
15 Kconfig. Then, how GPIOs are mapped depends on what the platform uses to
20 -----------
21 GPIOs can easily be mapped to devices and functions in the device tree. The
22 exact way to do it depends on the GPIO controller providing the GPIOs, see the
25 GPIOs mappings are defined in the consumer device's node, in a property named
26 <function>-gpios, where <function> is the function the driver will request
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| /openbmc/linux/Documentation/devicetree/bindings/mtd/ |
| H A D | atmel-nand.txt | 4 Documentation/devicetree/bindings/memory-controllers/atmel,ebi.txt).
11 - compatible: should be one of the following
12 "atmel,at91rm9200-nand-controller"
13 "atmel,at91sam9260-nand-controller"
14 "atmel,at91sam9261-nand-controller"
15 "atmel,at91sam9g45-nand-controller"
16 "atmel,sama5d3-nand-controller"
17 "microchip,sam9x60-nand-controller"
18 - ranges: empty ranges property to forward EBI ranges definitions.
19 - #address-cells: should be set to 2.
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| /openbmc/linux/Documentation/devicetree/bindings/extcon/ |
| H A D | extcon-max3355.txt | 1 Maxim Integrated MAX3355 USB OTG chip
2 -------------------------------------
4 MAX3355 integrates a charge pump and comparators to enable a system with an
5 integrated USB OTG dual-role transceiver to function as a USB OTG dual-role
9 - compatible: should be "maxim,max3355";
10 - maxim,shdn-gpios: should contain a phandle and GPIO specifier for the GPIO pin
12 - id-gpios: should contain a phandle and GPIO specifier for the GPIO pin
17 usb-otg {
19 maxim,shdn-gpios = <&gpio2 4 GPIO_ACTIVE_LOW>;
20 id-gpios = <&gpio5 31 GPIO_ACTIVE_HIGH>;
|
| /openbmc/linux/arch/arm/boot/dts/st/ |
| H A D | ste-ux500-samsung-codina-tmo.dts | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * Devicetree for the Samsung Galaxy Exhibit SGH-T599 also known as Codina-TMO,
4 * the "TMO" shall be read "T-Mobile" as this phone was produced exlusively
5 * for T-Mobile in the United States.
8 * - No CPU speed cap, full ~1GHz rate
9 * - Different power management IC, AB8505
10 * - As AB8505 has a micro USB phy, no TI TSU6111
11 * - Different power routing such as the removal of the external LDO for the
13 * - Using a regulator for the key backlight LED
14 * - Using the Samsung S6D27A1 panel by default
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| /openbmc/linux/drivers/mfd/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
24 bool "Altera Arria10 DevKit System Resource chip"
29 Support for the Altera Arria10 DevKit MAX5 System Resource chip
45 tristate "Active-semi ACT8945A"
50 Support for the ACT8945A PMIC from Active-semi. This device
51 features three step-down DC/DC converters and four low-dropout
67 sun4i-gpadc-iio and the hwmon driver iio_hwmon.
70 called sun4i-gpadc.
87 Say yes here to enable SMpro driver support for Ampere's Altra
101 tablets etc. It has 4 DC/DC step-down regulators, 3 DC/DC step-down
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