On Mon, Oct 16, 2023 at 03:58:32PM +0200, Mehdi Djait wrote: > The Techwell TW9900 is a video decoder supporting multiple input > standards, such as PAL and NTSC, and outputs a BT.656 video > signal. > > 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> > --- > 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 | 82 +++++++++++++++++++ > 1 file changed, 82 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..244289a9a3e0 > --- /dev/null > +++ b/Documentation/devicetree/bindings/media/i2c/techwell,tw9900.yaml > @@ -0,0 +1,82 @@ > +# 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@3: > + $ref: /schemas/graph.yaml#/properties/port > + description: Video port for the decoder output. > + > + patternProperties: > + "^port@[0-2]$": > + $ref: /schemas/graph.yaml#/properties/port > + description: Analog video input port. You need to define each port (0, 1, 2). Are those each component or composite, s-video, and component? The latter would make more sense as I don't think there would be a need to route each component to different place. It's logically just 1 stream. > + > + required: > + - port@3 > + > +required: > + - compatible > + - ports > + - reg > + > +additionalProperties: false > + > +examples: > + - | > + #include <dt-bindings/gpio/gpio.h> > + 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@3 { > + reg = <3>; > + endpoint { > + remote-endpoint = <&vip_in>; > + }; > + }; > + }; > + }; > + }; > -- > 2.41.0 >
