Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-scaling-engine.yaml

File Facts

System

Linux kernel

Corpus path

Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-scaling-engine.yaml

Extension

.yaml

Size

2542 bytes

Lines

84

Domain

Support Tooling And Documentation

Bucket

Documentation

Inferred role

Support Tooling And Documentation: configuration, schema, or hardware description

Status

atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

• Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

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

title: Freescale i.MX8qxp Display Controller Scaling Engine

description: |
  The unit can change the dimension of the input frame by nearest or linear
  re-sampling with 1/32 sub pixel precision.

  Internally it consist of two independent blocks for horizontal and vertical
  scaling. The sequence of both operations is arbitrary.

  Any frame dimensions between 1 and 16384 pixels in width and height are
  supported, except that the vertical scaler has a frame width maximum
  depending of the system's functional limitations.

  In general all scale factors are supported inside the supported frame
  dimensions. In range of scale factors 1/16..16 the filtered output colors
  are LSBit precise (e.g. DC ripple free).

                       +-----------+
                       |   Line    |
                       |  Buffer   |
                       +-----------+
                             ^
                             |
                             V
                 |\    +-----------+
           ------+ |   |           |
          |      | +-->| Vertical  |----
          |  ----+ |   |  Scaler   |    |
          | |    |/    +-----------+    |
          | |                           |
          | |                           |
          | |                           |     |\
          |  ------------- -------------+-----+ |
  Input --+               X                   | +--> Output
          |  ------------- -------------+-----+ |
          | |                           |     |/
          | |                           |
          | |    |\    +-----------+    |
          |  ----+ |   |           |    |
          |      | +-->| Horizontal|----
           ------+ |   |  Scaler   |
                 |/    +-----------+

  The unit supports downscaling, upscaling, sub pixel translation and bob
  de-interlacing.

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

properties:
  compatible:
    enum:
      - fsl,imx8qxp-dc-hscaler
      - fsl,imx8qxp-dc-vscaler

  reg:
    maxItems: 2

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

required:

Annotation

• Atlas domain: Support Tooling And Documentation / Documentation.
• Implementation status: atlas-only.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.