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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/Documentation/devicetree/bindings/display/arm,hdlcd.yaml
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

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%YAML 1.2

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---

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$id: http://devicetree.org/schemas/display/arm,hdlcd.yaml#

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$schema: http://devicetree.org/meta-schemas/core.yaml#

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title: Arm HDLCD display controller

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maintainers:

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  - Liviu Dudau <Liviu.Dudau@arm.com>

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  - Andre Przywara <andre.przywara@arm.com>

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description:

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  The Arm HDLCD is a display controller found on several development platforms

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  produced by ARM Ltd and in more modern of its Fast Models. The HDLCD is an

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  RGB streamer that reads the data from a framebuffer and sends it to a single

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  digital encoder (DVI or HDMI).

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properties:

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  compatible:

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    const: arm,hdlcd

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  reg:

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    maxItems: 1

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  interrupts:

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    maxItems: 1

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  clock-names:

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    const: pxlclk

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  clocks:

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    maxItems: 1

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    description: The input reference for the pixel clock.

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  memory-region:

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    maxItems: 1

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    description:

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      Phandle to a node describing memory to be used for the framebuffer.

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      If not present, the framebuffer may be located anywhere in memory.

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  iommus:

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    maxItems: 1

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  port:

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    $ref: /schemas/graph.yaml#/properties/port

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    unevaluatedProperties: false

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    description:

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      Output endpoint of the controller, connecting the LCD panel signals.

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additionalProperties: false

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required:

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  - compatible

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  - reg

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  - interrupts

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  - clocks

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  - port

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examples:

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  - |

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    hdlcd@2b000000 {

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        compatible = "arm,hdlcd";

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        reg = <0x2b000000 0x1000>;

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        interrupts = <0 85 4>;

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        clocks = <&oscclk5>;

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        clock-names = "pxlclk";

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        port {

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            hdlcd_output: endpoint {

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                remote-endpoint = <&hdmi_enc_input>;

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            };

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        };

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    };

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    /* HDMI encoder on I2C bus */

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    i2c {

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        #address-cells = <1>;

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        #size-cells = <0>;

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        hdmi-transmitter@70 {

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            compatible = "nxp,tda998x";

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            reg = <0x70>;

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            port {

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                hdmi_enc_input: endpoint {

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                    remote-endpoint = <&hdlcd_output>;

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                };

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            };

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        };

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    };

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...

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