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/Documentation/devicetree/bindings/gpio/
Dfsl-imx-gpio.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/gpio/fsl-imx-gpio.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Freescale i.MX/MXC GPIO controller
10 - Anson Huang <Anson.Huang@nxp.com>
15 - enum:
16 - fsl,imx1-gpio
17 - fsl,imx21-gpio
18 - fsl,imx31-gpio
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Dgpio-pca95xx.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/gpio/gpio-pca95xx.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: NXP PCA95xx I2C GPIO multiplexer
10 - Krzysztof Kozlowski <krzk@kernel.org>
13 Bindings for the family of I2C GPIO multiplexers/expanders: NXP PCA95xx,
19 - exar,xra1202
20 - maxim,max7310
21 - maxim,max7312
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Drenesas,rcar-gpio.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/gpio/renesas,rcar-gpio.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Renesas R-Car General-Purpose Input/Output Ports (GPIO)
10 - Geert Uytterhoeven <geert+renesas@glider.be>
15 - items:
16 - enum:
17 - renesas,gpio-r8a7778 # R-Car M1
18 - renesas,gpio-r8a7779 # R-Car H1
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Dgpio.txt1 Specifying GPIO information for devices
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
14 GPIO properties can contain one or more GPIO phandles, but only in exceptional
23 The following example could be used to describe GPIO pins used as device enable
24 and bit-banged data signals:
27 gpio-controller;
28 #gpio-cells = <2>;
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/Documentation/devicetree/bindings/pinctrl/
Dbrcm,nsp-gpio.txt1 Broadcom Northstar plus (NSP) GPIO/PINCONF Controller
4 - compatible:
5 Must be "brcm,nsp-gpio-a"
7 - reg:
9 GPIO base, IO control registers
11 - #gpio-cells:
12 Must be two. The first cell is the GPIO pin number (within the
16 - gpio-controller:
17 Specifies that the node is a GPIO controller
19 - ngpios:
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Drenesas,pfc.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Renesas Pin Function Controller (GPIO and Pin Mux/Config)
10 - Geert Uytterhoeven <geert+renesas@glider.be>
14 On SH/R-Mobile SoCs it also acts as a GPIO controller.
19 - renesas,pfc-emev2 # EMMA Mobile EV2
20 - renesas,pfc-r8a73a4 # R-Mobile APE6
21 - renesas,pfc-r8a7740 # R-Mobile A1
22 - renesas,pfc-r8a7742 # RZ/G1H
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/Documentation/devicetree/bindings/power/supply/
Dbq24190.txt1 TI BQ24190 Li-Ion Battery Charger
4 - compatible: contains one of the following:
9 - reg: integer, I2C address of the charger.
10 - interrupts[-extended]: configuration for charger INT pin.
13 - monitored-battery: phandle of battery characteristics devicetree node
15 + precharge-current-microamp: maximum charge current during precharge
17 + charge-term-current-microamp: a charge cycle terminates when the
21 - ti,system-minimum-microvolt: when power is connected and the battery is below
25 - usb-otg-vbus:
31 - Some circuit boards wire the chip's "OTG" pin high (enabling 500mA default
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/Documentation/driver-api/gpio/
Dboard.rst2 GPIO Mappings
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
9 gpio-legacy.txt (actually, there is no real mapping possible with the old
11 corresponding GPIO).
13 All platforms can enable the GPIO library, but if the platform strictly
14 requires GPIO functionality to be present, it needs to select GPIOLIB from its
20 -----------
22 exact way to do it depends on the GPIO controller providing the GPIOs, see the
26 <function>-gpios, where <function> is the function the driver will request
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/Documentation/firmware-guide/acpi/
Dgpio-properties.rst1 .. SPDX-License-Identifier: GPL-2.0
4 _DSD Device Properties Related to GPIO
10 the corresponding GPIO, which is pretty error prone (it depends on
31 ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
34 Package () {"reset-gpios", Package() {^BTH, 1, 1, 0 }},
35 Package () {"shutdown-gpios", Package() {^BTH, 0, 0, 0 }},
40 The format of the supported GPIO property is::
52 If 1, the GPIO is marked as active_low.
56 it to 1 marks the GPIO as active low.
61 In our Bluetooth example the "reset-gpios" refers to the second GpioIo()
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/Documentation/driver-api/
Dpinctl.rst9 - Enumerating and naming controllable pins
11 - Multiplexing of pins, pads, fingers (etc) see below for details
13 - Configuration of pins, pads, fingers (etc), such as software-controlled
14 biasing and driving mode specific pins, such as pull-up/down, open drain,
17 Top-level interface
22 - A pin controller is a piece of hardware, usually a set of registers, that
28 - PINS are equal to pads, fingers, balls or whatever packaging input or
32 be sparse - i.e. there may be gaps in the space with numbers where no
98 See for example arch/arm/mach-u300/Kconfig for an example.
107 also consider matching of offsets to the GPIO ranges that may be handled by
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/Documentation/sound/
Dalsa-configuration.rst2 Advanced Linux Sound Architecture - Driver Configuration guide
38 ----------
47 limiting card index for auto-loading (1-8);
49 For auto-loading more than one card, specify this option
50 together with snd-card-X aliases.
63 Module snd-pcm-oss
64 ------------------
86 regarding opening the device. When this option is non-zero,
90 Module snd-rawmidi
91 ------------------
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