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/Documentation/devicetree/bindings/media/cec/
Dcec-gpio.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/media/cec/cec-gpio.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: HDMI CEC GPIO
10 - Hans Verkuil <hverkuil-cisco@xs4all.nl>
13 The HDMI CEC GPIO module supports CEC implementations where the CEC line is
14 hooked up to a pull-up GPIO line and - optionally - the HPD line is hooked up
15 to another GPIO line.
17 Please note:: the maximum voltage for the CEC line is 3.63V, for the HPD and
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/Documentation/admin-guide/media/
Dcec.rst1 .. SPDX-License-Identifier: GPL-2.0
4 HDMI CEC
12 - Exynos4
13 - Exynos5
14 - STIH4xx HDMI CEC
15 - V4L2 adv7511 (same HW, but a different driver from the drm adv7511)
16 - stm32
17 - Allwinner A10 (sun4i)
18 - Raspberry Pi
19 - dw-hdmi (Synopsis IP)
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Dbuilding.rst1 .. SPDX-License-Identifier: GPL-2.0
8 distribution-specific source file or via the Kernel's main git tree\ [1]_.
12 - you're a braveheart and want to experiment with new stuff;
13 - if you want to report a bug;
14 - if you're developing new patches
23 https://linuxtv.org/wiki/index.php/How_to_Obtain,_Build_and_Install_V4L-DVB_Device_Drivers
50 Device Drivers --->
51 <M> Remote Controller support --->
52 [ ] HDMI CEC RC integration
53 [ ] Enable CEC error injection support
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/Documentation/devicetree/bindings/media/i2c/
Dchrontel,ch7322.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Chrontel HDMI-CEC Controller
10 - Jeff Chase <jnchase@google.com>
13 The Chrontel CH7322 is a discrete HDMI-CEC controller. It is
14 programmable through I2C and drives a single CEC line.
17 - $ref: /schemas/media/cec/cec-common.yaml#
33 reset-gpios:
35 Reference to the GPIO connected to the RESET pin, if any. This
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Dadv7604.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Hans Verkuil <hverkuil-cisco@xs4all.nl>
23 - enum:
24 - adi,adv7610
25 - adi,adv7611
26 - adi,adv7612
32 reg-names:
35 - const: main
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/Documentation/devicetree/bindings/display/
Dbrcm,bcm2711-hdmi.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/display/brcm,bcm2711-hdmi.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Eric Anholt <eric@anholt.net>
15 - brcm,bcm2711-hdmi0
16 - brcm,bcm2711-hdmi1
20 - description: HDMI controller register range
21 - description: DVP register range
22 - description: HDMI PHY register range
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/Documentation/userspace-api/media/cec/
Dcec-pin-error-inj.rst1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
5 CEC Pin Framework Error Injection
8 The CEC Pin Framework is a core CEC framework for CEC hardware that only
9 has low-level support for the CEC bus. Most hardware today will have
10 high-level CEC support where the hardware deals with driving the CEC bus,
12 allows you to connect the CEC pin to a GPIO on e.g. a Raspberry Pi and
13 you have now made a CEC adapter.
17 test how well CEC adapters can handle error conditions.
19 Currently only the cec-gpio driver (when the CEC line is directly
20 connected to a pull-up GPIO line) and the AllWinner A10/A20 drm driver
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/Documentation/driver-api/gpio/
Ddrivers-on-gpio.rst2 Subsystem drivers using GPIO
5 Note that standard kernel drivers exist for common GPIO tasks and will provide
6 the right in-kernel and userspace APIs/ABIs for the job, and that these
10 - leds-gpio: drivers/leds/leds-gpio.c will handle LEDs connected to GPIO
13 - ledtrig-gpio: drivers/leds/trigger/ledtrig-gpio.c will provide a LED trigger,
14 i.e. a LED will turn on/off in response to a GPIO line going high or low
15 (and that LED may in turn use the leds-gpio as per above).
17 - gpio-keys: drivers/input/keyboard/gpio_keys.c is used when your GPIO line
20 - gpio-keys-polled: drivers/input/keyboard/gpio_keys_polled.c is used when your
21 GPIO line cannot generate interrupts, so it needs to be periodically polled
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Ddriver.rst2 GPIO Driver Interface
5 This document serves as a guide for writers of GPIO chip drivers.
7 Each GPIO controller driver needs to include the following header, which defines
8 the structures used to define a GPIO driver::
10 #include <linux/gpio/driver.h>
16 A GPIO chip handles one or more GPIO lines. To be considered a GPIO chip, the
18 line is not general purpose, it is not GPIO and should not be handled by a
19 GPIO chip. The use case is the indicative: certain lines in a system may be
20 called GPIO but serve a very particular purpose thus not meeting the criteria
22 GPIO and should therefore still be handled by a GPIO chip driver.
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/Documentation/devicetree/bindings/display/bridge/
Dadi,adv7533.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Laurent Pinchart <laurent.pinchart@ideasonboard.com>
13 - $ref: /schemas/sound/dai-common.yaml#
18 conversion, S/PDIF, CEC and HDCP. The transmitter input is MIPI DSI.
23 - adi,adv7533
24 - adi,adv7535
38 reg-names:
41 needing a non-default address.
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Dadi,adv7511.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Laurent Pinchart <laurent.pinchart@ideasonboard.com>
15 space conversion, S/PDIF, CEC and HDCP. The transmitter input is
21 - adi,adv7511
22 - adi,adv7511w
23 - adi,adv7513
37 reg-names:
40 needing a non-default address.
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/Documentation/devicetree/bindings/i2c/
Di2c-demux-pinctrl.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/i2c/i2c-demux-pinctrl.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Pinctrl-based I2C Bus Demultiplexer
10 - Wolfram Sang <wsa+renesas@sang-engineering.com>
18 GPIO bitbanging if your current runtime configuration hits an errata of the
21 +-------------------------------+
23 | | +-----+ +-----+
24 | +------------+ | | dev | | dev |
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