dt-bindings: display: imx: Add i.MX8qxp Display Controller blit engine

i.MX8qxp Display Controller contains a blit engine for raster graphics.
It may read up to 3 source images from memory and computes one destination
image from it, which is written back to memory.

Signed-off-by: Liu Ying <[e-mail]>
Reviewed-by: Rob Herring (Arm) <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

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

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/imx/fsl,imx8qxp-dc-blit-engine.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale i.MX8qxp Display Controller Blit Engine
+
+description: |
+  A blit operation (block based image transfer) reads up to 3 source images
+  from memory and computes one destination image from it, which is written
+  back to memory. The following basic operations are supported:
+
+  * Buffer Fill
+    Fills a buffer with constant color
+
+  * Buffer Copy
+    Copies one source to a destination buffer.
+
+  * Image Blend
+    Combines two source images by a blending equation and writes result to
+    destination (which can be one of the sources).
+
+  * Image Rop2/3
+    Combines up to three source images by a logical equation (raster operation)
+    and writes result to destination (which can be one of the sources).
+
+  * Image Flip
+    Mirrors the source image in horizontal and/or vertical direction.
+
+  * Format Convert
+    Convert between the supported color and buffer formats.
+
+  * Color Transform
+    Modify colors by linear or non-linear transformations.
+
+  * Image Scale
+    Changes size of the source image.
+
+  * Image Rotate
+    Rotates the source image by any angle.
+
+  * Image Filter
+    Performs an FIR filter operation on the source image.
+
+  * Image Warp
+    Performs a re-sampling of the source image with any pattern. The sample
+    point positions are read from a compressed coordinate buffer.
+
+  * Buffer Pack
+    Writes an image with color components stored in up to three different
+    buffers (planar formats) into a single buffer (packed format).
+
+  * Chroma Resample
+    Converts between different YUV formats that differ in chroma sampling rate
+    (4:4:4, 4:2:2, 4:2:0).
+
+maintainers:
+  - Liu Ying <[e-mail]>
+
+properties:
+  compatible:
+    const: fsl,imx8qxp-dc-blit-engine
+
+  reg:
+    maxItems: 2
+
+  reg-names:
+    items:
+      - const: pec
+      - const: cfg
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 1
+
+  ranges: true
+
+patternProperties:
+  "^blitblend@[0-9a-f]+$":
+    type: object
+    additionalProperties: true
+
+    properties:
+      compatible:
+        const: fsl,imx8qxp-dc-blitblend
+
+  "^clut@[0-9a-f]+$":
+    type: object
+    additionalProperties: true
+
+    properties:
+      compatible:
+        const: fsl,imx8qxp-dc-clut
+
+  "^fetchdecode@[0-9a-f]+$":
+    type: object
+    additionalProperties: true
+
+    properties:
+      compatible:
+        const: fsl,imx8qxp-dc-fetchdecode
+
+  "^fetcheco@[0-9a-f]+$":
+    type: object
+    additionalProperties: true
+
+    properties:
+      compatible:
+        const: fsl,imx8qxp-dc-fetcheco
+
+  "^fetchwarp@[0-9a-f]+$":
+    type: object
+    additionalProperties: true
+
+    properties:
+      compatible:
+        const: fsl,imx8qxp-dc-fetchwarp
+
+  "^filter@[0-9a-f]+$":
+    type: object
+    additionalProperties: true
+
+    properties:
+      compatible:
+        const: fsl,imx8qxp-dc-filter
+
+  "^hscaler@[0-9a-f]+$":
+    type: object
+    additionalProperties: true
+
+    properties:
+      compatible:
+        const: fsl,imx8qxp-dc-hscaler
+
+  "^matrix@[0-9a-f]+$":
+    type: object
+    additionalProperties: true
+
+    properties:
+      compatible:
+        const: fsl,imx8qxp-dc-matrix
+
+  "^rop@[0-9a-f]+$":
+    type: object
+    additionalProperties: true
+
+    properties:
+      compatible:
+        const: fsl,imx8qxp-dc-rop
+
+  "^store@[0-9a-f]+$":
+    type: object
+    additionalProperties: true
+
+    properties:
+      compatible:
+        const: fsl,imx8qxp-dc-store
+
+  "^vscaler@[0-9a-f]+$":
+    type: object
+    additionalProperties: true
+
+    properties:
+      compatible:
+        const: fsl,imx8qxp-dc-vscaler
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - "#address-cells"
+  - "#size-cells"
+  - ranges
+
+additionalProperties: false
+
+examples:
+  - |
+    blit-engine@56180820 {
+        compatible = "fsl,imx8qxp-dc-blit-engine";
+        reg = <0x56180820 0x13c>, <0x56181000 0x3400>;
+        reg-names = "pec", "cfg";
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges;
+
+        fetchdecode@56180820 {
+            compatible = "fsl,imx8qxp-dc-fetchdecode";
+            reg = <0x56180820 0x10>, <0x56181000 0x404>;
+            reg-names = "pec", "cfg";
+        };
+
+        store@56180940 {
+            compatible = "fsl,imx8qxp-dc-store";
+            reg = <0x56180940 0x1c>, <0x56184000 0x5c>;
+            reg-names = "pec", "cfg";
+            interrupt-parent = <&dc0_intc>;
+            interrupts = <0>, <1>, <2>;
+            interrupt-names = "shdload", "framecomplete", "seqcomplete";
+        };
+    };