The Techwell TW9900 is a video decoder supporting multiple input standards such as PAL and NTSC and has a parallel BT.656 output interface. It's designed to be low-power, posesses some features such as a programmable comb-filter, and automatic input standard detection Signed-off-by: Mehdi Djait <mehdi.djait@xxxxxxxxxxx> --- V7->V8: - fixed the number of analog input ports: it is just one. - added endpoints of the analog input port - added vdd-supply to the required in the dt-binding documentation V6->V7: - added powerdown-gpios and input ports - used 4 spaces for example identation V5->V6: - This commit had a "Reviewed-by: Rob Herring <robh@xxxxxxxxxx>" Tag but decided not to collect it because the last Iteration was more than 2 years ago - removed SECAM from the mentioned standards - changed maintainer V4->V5: - renamed the file to match the compatible string, and referenced the graph.yaml schema V3->V4: - add the missing reset-gpios node to the binding V2->V3: - fix the example not compiling due to a typo in the reset-gpios node. .../bindings/media/i2c/techwell,tw9900.yaml | 137 ++++++++++++++++++ 1 file changed, 137 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/i2c/techwell,tw9900.yaml diff --git a/Documentation/devicetree/bindings/media/i2c/techwell,tw9900.yaml b/Documentation/devicetree/bindings/media/i2c/techwell,tw9900.yaml new file mode 100644 index 000000000000..e37317f81072 --- /dev/null +++ b/Documentation/devicetree/bindings/media/i2c/techwell,tw9900.yaml @@ -0,0 +1,137 @@ +# 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@xxxxxxxxxxx> + +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: + $ref: /schemas/graph.yaml#/$defs/port-base + 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>; + }; + }; + }; + }; + }; -- 2.41.0
