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Diffstat (limited to 'Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-fetchunit.yaml')
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diff --git a/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-fetchunit.yaml b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-fetchunit.yaml new file mode 100644 index 000000000000..97fb6a4598d9 --- /dev/null +++ b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-fetchunit.yaml @@ -0,0 +1,141 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/display/imx/fsl,imx8qxp-dc-fetchunit.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Freescale i.MX8qxp Display Controller Fetch Unit + +description: | + The Fetch Unit is the interface between the AXI bus for source buffer access + and the internal pixel processing pipeline, which is 30-bit RGB plus 8-bit + Alpha. + + It is used to generate foreground planes in Display Controllers and source + planes in Blit Engines, and comprises the following built-in functions to + convert a wide range of frame buffer types. + + +---------X-----------------------------------------+ + | | Fetch Unit | + | V | + | +---------+ | + | | | | + | | Decode | Decompression [Decode] | + | | | | + | +---------+ | + | | | + | V | + | +---------+ | + | | Clip & | Clip Window [All] | + | | Overlay | Plane composition [Layer, Warp] | + | | | | + | +---------+ | + | | | + | V | + | +---------+ | + | | Re- | Flip/Rotate/Repl./Drop [All] | + X--> | sample | Perspective/Affine warping [Persp] | + | | | | Arbitrary warping [Warp, Persp] | + | | +---------+ | + | | | | + | | V | + | | +---------+ | + | | | | | + | | | Palette | Color Palette [Layer, Decode] | + | | | | | + | | +---------+ | + | | | | + | | V | + | | +---------+ | + | | | Extract | Raw to RGBA/YUV [All] | + | | | & | Bit width expansion [All] | + | | | Expand | | + | | +---------+ | + | | | | + | | V | + | | +---------+ | + | | | | Planar to packed | + | |->| Combine | [Decode, Warp, Persp] | + | | | | | + | | +---------+ | + | | | | + | | V | + | | +---------+ | + | | | | YUV422 to YUV444 | + | | | Chroma | [Decode, Persp] | + | | | | | + | | +---------+ | + | | | | + | | V | + | | +---------+ | + | | | | YUV to RGB | + | | | Color | [Warp, Persp, Decode, Layer] | + | | | | | + | | +---------+ | + | | | | + | | V | + | | +---------+ | + | | | | Gamma removal | + | | | Gamma | [Warp, Persp, Decode, Layer] | + | | | | | + | | +---------+ | + | | | | + | | V | + | | +---------+ | + | | | | Alpla multiply, RGB pre-multiply | + | ->| Multiply| [Warp, Persp, Decode, Layer] | + | | | | + | --------- | + | | | + | V | + | +---------+ | + | | | Bilinear filter | + | | Filter | [Warp, Persp] | + | | | | + | +---------+ | + | | | + | V | + +---------X-----------------------------------------+ + + Note that different derivatives of the Fetch Unit exist. Each implements a + specific subset only of the pipeline stages shown above. Restrictions for the + units are specified in [square brackets]. + +maintainers: + - Liu Ying <victor.liu@nxp.com> + +properties: + compatible: + enum: + - fsl,imx8qxp-dc-fetchdecode + - fsl,imx8qxp-dc-fetcheco + - fsl,imx8qxp-dc-fetchlayer + - fsl,imx8qxp-dc-fetchwarp + + reg: + maxItems: 2 + + reg-names: + items: + - const: pec + - const: cfg + + fsl,prg: + $ref: /schemas/types.yaml#/definitions/phandle + description: + Optional Prefetch Resolve Gasket associated with the Fetch Unit. + +required: + - compatible + - reg + - reg-names + +additionalProperties: false + +examples: + - | + fetchlayer@56180ac0 { + compatible = "fsl,imx8qxp-dc-fetchlayer"; + reg = <0x56180ac0 0xc>, <0x56188400 0x404>; + reg-names = "pec", "cfg"; + }; |