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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/media/i2c/techwell,tw9900.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Techwell TW9900 NTSC/PAL video decoder
maintainers:
- Mehdi Djait <mehdi.djait@bootlin.com>
description:
The tw9900 is a multi-standard video decoder, supporting NTSC, PAL standards
with auto-detection features.
properties:
compatible:
const: techwell,tw9900
reg:
maxItems: 1
vdd-supply:
description: VDD power supply
reset-gpios:
description: GPIO descriptor for the RESET input pin
maxItems: 1
powerdown-gpios:
description: GPIO descriptor for the POWERDOWN input pin
maxItems: 1
ports:
$ref: /schemas/graph.yaml#/properties/ports
properties:
port@0:
$ref: /schemas/graph.yaml#/properties/port
description: Analog input port
properties:
endpoint@0:
$ref: /schemas/graph.yaml#/properties/endpoint
description: CVBS over MUX0
endpoint@1:
$ref: /schemas/graph.yaml#/properties/endpoint
description: CVBS over MUX1
endpoint@2:
$ref: /schemas/graph.yaml#/properties/endpoint
description: Chroma over CIN0 and Y over MUX0
endpoint@3:
$ref: /schemas/graph.yaml#/properties/endpoint
description: Chroma over CIN0 and Y over MUX1
oneOf:
- required:
- endpoint@0
- required:
- endpoint@1
- required:
- endpoint@2
- required:
- endpoint@3
port@1:
$ref: /schemas/graph.yaml#/properties/port
description: Video port for the decoder output.
required:
- port@0
- port@1
required:
- compatible
- ports
- reg
- vdd-supply
additionalProperties: false
examples:
- |
#include <dt-bindings/display/sdtv-standards.h>
#include <dt-bindings/gpio/gpio.h>
composite_connector {
compatible = "composite-video-connector";
label = "tv";
sdtv-standards = <(SDTV_STD_PAL | SDTV_STD_NTSC)>;
port {
composite_to_tw9900: endpoint {
remote-endpoint = <&tw9900_to_composite>;
};
};
};
i2c {
#address-cells = <1>;
#size-cells = <0>;
video-decoder@44 {
compatible = "techwell,tw9900";
reg = <0x44>;
vdd-supply = <&tw9900_supply>;
reset-gpios = <&gpio2 5 GPIO_ACTIVE_LOW>;
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
#address-cells = <1>;
#size-cells = <0>;
reg = <0>;
tw9900_to_composite: endpoint@0 {
reg = <0>;
remote-endpoint = <&composite_to_tw9900>;
};
};
port@1 {
reg = <1>;
endpoint {
remote-endpoint = <&cif_in>;
};
};
};
};
};
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