89 lines
2.9 KiB
Plaintext
89 lines
2.9 KiB
Plaintext
* Analog Devices ADV7604/11/12 video decoder with HDMI receiver
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The ADV7604 and ADV7611/12 are multiformat video decoders with an integrated
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HDMI receiver. The ADV7604 has four multiplexed HDMI inputs and one analog
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input, and the ADV7611 has one HDMI input and no analog input. The 7612 is
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similar to the 7611 but has 2 HDMI inputs.
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These device tree bindings support the ADV7611/12 only at the moment.
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Required Properties:
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- compatible: Must contain one of the following
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- "adi,adv7611" for the ADV7611
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- "adi,adv7612" for the ADV7612
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- reg: I2C slave addresses
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The ADV76xx has up to thirteen 256-byte maps that can be accessed via the
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main I2C ports. Each map has it own I2C address and acts as a standard
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slave device on the I2C bus. The main address is mandatory, others are
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optional and revert to defaults if not specified.
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- hpd-gpios: References to the GPIOs that control the HDMI hot-plug
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detection pins, one per HDMI input. The active flag indicates the GPIO
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level that enables hot-plug detection.
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The device node must contain one 'port' child node per device input and output
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port, in accordance with the video interface bindings defined in
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Documentation/devicetree/bindings/media/video-interfaces.txt. The port nodes
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are numbered as follows.
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Port ADV7611 ADV7612
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------------------------------------------------------------
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HDMI 0 0, 1
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Digital output 1 2
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The digital output port node must contain at least one endpoint.
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Optional Properties:
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- reset-gpios: Reference to the GPIO connected to the device's reset pin.
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- default-input: Select which input is selected after reset.
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- reg-names : Names of maps with programmable addresses.
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It can contain any map needing a non-default address.
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Possible maps names are :
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"main", "avlink", "cec", "infoframe", "esdp", "dpp", "afe",
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"rep", "edid", "hdmi", "test", "cp", "vdp"
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Optional Endpoint Properties:
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The following three properties are defined in video-interfaces.txt and are
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valid for source endpoints only.
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- hsync-active: Horizontal synchronization polarity. Defaults to active low.
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- vsync-active: Vertical synchronization polarity. Defaults to active low.
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- pclk-sample: Pixel clock polarity. Defaults to output on the falling edge.
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If none of hsync-active, vsync-active and pclk-sample is specified the
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endpoint will use embedded BT.656 synchronization.
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Example:
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hdmi_receiver@4c {
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compatible = "adi,adv7611";
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/*
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* The edid page will be accessible @ 0x66 on the I2C bus. All
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* other maps will retain their default addresses.
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*/
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reg = <0x4c>, <0x66>;
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reg-names "main", "edid";
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reset-gpios = <&ioexp 0 GPIO_ACTIVE_LOW>;
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hpd-gpios = <&ioexp 2 GPIO_ACTIVE_HIGH>;
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#address-cells = <1>;
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#size-cells = <0>;
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default-input = <0>;
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port@0 {
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reg = <0>;
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};
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port@1 {
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reg = <1>;
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hdmi_in: endpoint {
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remote-endpoint = <&ccdc_in>;
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};
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};
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};
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