media/cec/cec-gpio.yaml

1 # 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
19   circuitry when connecting them to a GPIO line.
23     const: cec-gpio
25   cec-gpios:
28       GPIO that the CEC line is connected to. The line should be tagged as open
31   hpd-gpios:
34       GPIO that the HPD line is connected to.  Used for debugging HPD changes
37   v5-gpios:
40       GPIO that the 5V line is connected to.  Used for debugging changes on the
44   - compatible
45   - cec-gpios
48   - $ref: cec-common.yaml#
49   - if:
51         - hdmi-phandle
54         hpd-gpios: false
56   - if:
58         - hpd-gpios
61         hdmi-phandle: false
66   - |
67     #include <dt-bindings/gpio/gpio.h>
70         compatible = "cec-gpio";
71         cec-gpios = <&gpio 7 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
72         hpd-gpios = <&gpio 17 GPIO_ACTIVE_HIGH>;
73         v5-gpios = <&gpio 22 GPIO_ACTIVE_HIGH>;