xref: /freebsd/sys/contrib/device-tree/Bindings/display/imx/fsl,imx8qxp-dc-extdst.yaml (revision 833e5d42ab135b0238e61c5b3c19b8619677cbfa)

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/display/imx/fsl,imx8qxp-dc-extdst.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Freescale i.MX8qxp Display Controller External Destination Interface

description: |
  The External Destination unit is the interface between the internal pixel
  processing pipeline of the Pixel Engine, which is 30-bit RGB plus 8-bit Alpha,
  and a Display Engine.

  It comprises the following built-in Gamma apply function.

  +------X-----------------------+
  |      |          ExtDst Unit  |
  |      V                       |
  |  +-------+                   |
  |  | Gamma |                   |
  |  +-------+                   |
  |      |                       |
  |      V                       +
  +------X-----------------------+

  The output format is 24-bit RGB plus 1-bit Alpha. Conversion from 10 to 8
  bits is done by LSBit truncation.  Alpha output bit is 1 for input 255, 0
  otherwise.

maintainers:
  - Liu Ying <victor.liu@nxp.com>

properties:
  compatible:
    const: fsl,imx8qxp-dc-extdst

  reg:
    maxItems: 2

  reg-names:
    items:
      - const: pec
      - const: cfg

  interrupts:
    maxItems: 3

  interrupt-names:
    items:
      - const: shdload
      - const: framecomplete
      - const: seqcomplete

required:
  - compatible
  - reg
  - reg-names
  - interrupts
  - interrupt-names

additionalProperties: false

examples:
  - |
    extdst@56180980 {
        compatible = "fsl,imx8qxp-dc-extdst";
        reg = <0x56180980 0x1c>, <0x56184800 0x28>;
        reg-names = "pec", "cfg";
        interrupt-parent = <&dc0_intc>;
        interrupts = <3>, <4>, <5>;
        interrupt-names = "shdload", "framecomplete", "seqcomplete";
    };