[PATCH v3 01/19] dt-bindings: display: imx: Add i.MX8qxp Display Controller processing units

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Freescale i.MX8qxp Display Controller is implemented as construction set of
building blocks with unified concept and standardized interfaces.  Document
all existing processing units.

Signed-off-by: Liu Ying <victor.liu@xxxxxxx>
---
v3:
* Combine fsl,imx8qxp-dc-fetchunit-common.yaml,
  fsl,imx8qxp-dc-fetchlayer.yaml and fsl,imx8qxp-dc-fetchwarp.yaml
  into 1 schema doc fsl,imx8qxp-dc-fetchunit.yaml. (Rob)
* Document all processing units. (Rob)

v2:
* Drop fsl,dc-*-id DT properties. (Krzysztof)
* Add port property to fsl,imx8qxp-dc-tcon.yaml. (Krzysztof)
* Fix register range sizes in examples.

 .../display/imx/fsl,imx8qxp-dc-blitblend.yaml |  41 +++++
 .../display/imx/fsl,imx8qxp-dc-clut.yaml      |  44 ++++++
 .../imx/fsl,imx8qxp-dc-constframe.yaml        |  44 ++++++
 .../display/imx/fsl,imx8qxp-dc-dither.yaml    |  45 ++++++
 .../display/imx/fsl,imx8qxp-dc-extdst.yaml    |  72 +++++++++
 .../display/imx/fsl,imx8qxp-dc-fetchunit.yaml | 141 ++++++++++++++++++
 .../display/imx/fsl,imx8qxp-dc-filter.yaml    |  43 ++++++
 .../display/imx/fsl,imx8qxp-dc-framegen.yaml  |  64 ++++++++
 .../display/imx/fsl,imx8qxp-dc-gammacor.yaml  |  32 ++++
 .../imx/fsl,imx8qxp-dc-layerblend.yaml        |  39 +++++
 .../display/imx/fsl,imx8qxp-dc-matrix.yaml    |  44 ++++++
 .../display/imx/fsl,imx8qxp-dc-rop.yaml       |  43 ++++++
 .../display/imx/fsl,imx8qxp-dc-safety.yaml    |  34 +++++
 .../imx/fsl,imx8qxp-dc-scaling-engine.yaml    |  83 +++++++++++
 .../display/imx/fsl,imx8qxp-dc-signature.yaml |  53 +++++++
 .../display/imx/fsl,imx8qxp-dc-store.yaml     |  96 ++++++++++++
 .../display/imx/fsl,imx8qxp-dc-tcon.yaml      |  45 ++++++
 17 files changed, 963 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-blitblend.yaml
 create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-clut.yaml
 create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-constframe.yaml
 create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-dither.yaml
 create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-extdst.yaml
 create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-fetchunit.yaml
 create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-filter.yaml
 create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-framegen.yaml
 create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-gammacor.yaml
 create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-layerblend.yaml
 create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-matrix.yaml
 create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-rop.yaml
 create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-safety.yaml
 create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-scaling-engine.yaml
 create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-signature.yaml
 create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-store.yaml
 create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-tcon.yaml

diff --git a/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-blitblend.yaml b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-blitblend.yaml
new file mode 100644
index 000000000000..095e65939fba
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-blitblend.yaml
@@ -0,0 +1,41 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/imx/fsl,imx8qxp-dc-blitblend.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale i.MX8qxp Display Controller Blit Blend Unit
+
+description:
+  Combines two input frames to a single output frame, all frames having the
+  same dimension.
+
+maintainers:
+  - Liu Ying <victor.liu@xxxxxxx>
+
+properties:
+  compatible:
+    const: fsl,imx8qxp-dc-blitblend
+
+  reg:
+    maxItems: 2
+
+  reg-names:
+    items:
+      - const: pec
+      - const: cfg
+
+required:
+  - compatible
+  - reg
+  - reg-names
+
+additionalProperties: false
+
+examples:
+  - |
+    blitblend@56180920 {
+        compatible = "fsl,imx8qxp-dc-blitblend";
+        reg = <0x56180920 0x10>, <0x56183c00 0x3c>;
+        reg-names = "pec", "cfg";
+    };
diff --git a/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-clut.yaml b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-clut.yaml
new file mode 100644
index 000000000000..21d42aa11b52
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-clut.yaml
@@ -0,0 +1,44 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/imx/fsl,imx8qxp-dc-clut.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale i.MX8qxp Display Controller Color Lookup Table
+
+description: |
+  The unit implements 3 look-up tables with 256 x 10 bit entries each. These
+  can be used for different kinds of applications. From 10-bit input values
+  only upper 8 bits are used.
+
+  The unit supports color lookup, index lookup, dithering and alpha masking.
+
+maintainers:
+  - Liu Ying <victor.liu@xxxxxxx>
+
+properties:
+  compatible:
+    const: fsl,imx8qxp-dc-clut
+
+  reg:
+    maxItems: 2
+
+  reg-names:
+    items:
+      - const: pec
+      - const: cfg
+
+required:
+  - compatible
+  - reg
+  - reg-names
+
+additionalProperties: false
+
+examples:
+  - |
+    clut@56180880 {
+        compatible = "fsl,imx8qxp-dc-clut";
+        reg = <0x56180880 0x10>, <0x56182400 0x404>;
+        reg-names = "pec", "cfg";
+    };
diff --git a/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-constframe.yaml b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-constframe.yaml
new file mode 100644
index 000000000000..94f678563608
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-constframe.yaml
@@ -0,0 +1,44 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/imx/fsl,imx8qxp-dc-constframe.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale i.MX8qxp Display Controller Constant Frame
+
+description: |
+  The Constant Frame unit is used instead of a Fetch unit where generation of
+  constant color frames only is sufficient. This is the case for the background
+  planes of content and safety streams in a Display Controller.
+
+  The color can be setup to any RGBA value.
+
+maintainers:
+  - Liu Ying <victor.liu@xxxxxxx>
+
+properties:
+  compatible:
+    const: fsl,imx8qxp-dc-constframe
+
+  reg:
+    maxItems: 2
+
+  reg-names:
+    items:
+      - const: pec
+      - const: cfg
+
+required:
+  - compatible
+  - reg
+  - reg-names
+
+additionalProperties: false
+
+examples:
+  - |
+    constframe@56180960 {
+        compatible = "fsl,imx8qxp-dc-constframe";
+        reg = <0x56180960 0xc>, <0x56184400 0x20>;
+        reg-names = "pec", "cfg";
+    };
diff --git a/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-dither.yaml b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-dither.yaml
new file mode 100644
index 000000000000..8e4468d91836
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-dither.yaml
@@ -0,0 +1,45 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/imx/fsl,imx8qxp-dc-dither.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale i.MX8qxp Display Controller Dither Unit
+
+description: |
+  The unit can increase the physical color resolution of a display from 5, 6, 7
+  or 8 bits per RGB channel to a virtual resolution of 10 bits. The physical
+  resolution can be set individually for each channel.
+
+  The resolution is increased by mixing the two physical colors that are nearest
+  to the virtual color code in a variable ratio either by time (temporal
+  dithering) or by position (spatial dithering).
+
+  An optimized algorithm for temporal dithering minimizes noise artifacts on the
+  output image.
+
+  The dither operation can be individually enabled or disabled for each pixel
+  using the alpha input bit.
+
+maintainers:
+  - Liu Ying <victor.liu@xxxxxxx>
+
+properties:
+  compatible:
+    const: fsl,imx8qxp-dc-dither
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    dither@5618c400 {
+        compatible = "fsl,imx8qxp-dc-dither";
+        reg = <0x5618c400 0x14>;
+    };
diff --git a/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-extdst.yaml b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-extdst.yaml
new file mode 100644
index 000000000000..dfc2d4f94f8e
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-extdst.yaml
@@ -0,0 +1,72 @@
+# 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@xxxxxxx>
+
+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";
+    };
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@xxxxxxx>
+
+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:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      Optional Prefetch Resolve Gasket associated with the Fetch Unit.
+
+required:
+  - compatible
+  - reg
+  - reg-names
+
+additionalProperties: false
+
+examples:
+  - |
+    fetchlayer@56180ac0 {
+        compatible = "fsl,imx8qxp-dc-fetchlayer";
+        reg = <0x56180ac0 0xc>, <0x56188400 0x404>;
+        reg-names = "pec", "cfg";
+    };
diff --git a/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-filter.yaml b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-filter.yaml
new file mode 100644
index 000000000000..5c54d5179ee3
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-filter.yaml
@@ -0,0 +1,43 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/imx/fsl,imx8qxp-dc-filter.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale i.MX8qxp Display Controller Filter Unit
+
+description: |
+  5x5 FIR filter with 25 programmable coefficients.
+
+  Typical applications are image blurring, sharpening or support for edge
+  detection algorithms.
+
+maintainers:
+  - Liu Ying <victor.liu@xxxxxxx>
+
+properties:
+  compatible:
+    const: fsl,imx8qxp-dc-filter
+
+  reg:
+    maxItems: 2
+
+  reg-names:
+    items:
+      - const: pec
+      - const: cfg
+
+required:
+  - compatible
+  - reg
+  - reg-names
+
+additionalProperties: false
+
+examples:
+  - |
+    filter@56180900 {
+        compatible = "fsl,imx8qxp-dc-filter";
+        reg = <0x56180900 0x10>, <0x56183800 0x30>;
+        reg-names = "pec", "cfg";
+    };
diff --git a/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-framegen.yaml b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-framegen.yaml
new file mode 100644
index 000000000000..9d1dc3a9de90
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-framegen.yaml
@@ -0,0 +1,64 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/imx/fsl,imx8qxp-dc-framegen.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale i.MX8qxp Display Controller Frame Generator
+
+description:
+  The Frame Generator (FrameGen) module generates a programmable video timing
+  and optionally allows to synchronize the generated video timing to external
+  synchronization signals.
+
+maintainers:
+  - Liu Ying <victor.liu@xxxxxxx>
+
+properties:
+  compatible:
+    const: fsl,imx8qxp-dc-framegen
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 8
+
+  interrupt-names:
+    items:
+      - const: int0
+      - const: int1
+      - const: int2
+      - const: int3
+      - const: primsync_on
+      - const: primsync_off
+      - const: secsync_on
+      - const: secsync_off
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - interrupts
+  - interrupt-names
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/imx8-lpcg.h>
+    #include <dt-bindings/firmware/imx/rsrc.h>
+
+    framegen@5618b800 {
+        compatible = "fsl,imx8qxp-dc-framegen";
+        reg = <0x5618b800 0x98>;
+        clocks = <&dc0_disp_lpcg IMX_LPCG_CLK_0>;
+        interrupt-parent = <&dc0_intc>;
+        interrupts = <18>, <19>, <20>, <21>, <41>, <42>, <43>, <44>;
+        interrupt-names = "int0", "int1", "int2", "int3",
+                          "primsync_on", "primsync_off",
+                          "secsync_on", "secsync_off";
+    };
diff --git a/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-gammacor.yaml b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-gammacor.yaml
new file mode 100644
index 000000000000..25ad85742912
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-gammacor.yaml
@@ -0,0 +1,32 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/imx/fsl,imx8qxp-dc-gammacor.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale i.MX8qxp Display Controller Gamma Correction Unit
+
+description: The unit supports non-linear color transformation.
+
+maintainers:
+  - Liu Ying <victor.liu@xxxxxxx>
+
+properties:
+  compatible:
+    const: fsl,imx8qxp-dc-gammacor
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    gammacor@5618c000 {
+        compatible = "fsl,imx8qxp-dc-gammacor";
+        reg = <0x5618c000 0x20>;
+    };
diff --git a/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-layerblend.yaml b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-layerblend.yaml
new file mode 100644
index 000000000000..2a6ab8a0ed7f
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-layerblend.yaml
@@ -0,0 +1,39 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/imx/fsl,imx8qxp-dc-layerblend.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale i.MX8qxp Display Controller Layer Blend Unit
+
+description: Combines two input frames to a single output frame.
+
+maintainers:
+  - Liu Ying <victor.liu@xxxxxxx>
+
+properties:
+  compatible:
+    const: fsl,imx8qxp-dc-layerblend
+
+  reg:
+    maxItems: 2
+
+  reg-names:
+    items:
+      - const: pec
+      - const: cfg
+
+required:
+  - compatible
+  - reg
+  - reg-names
+
+additionalProperties: false
+
+examples:
+  - |
+    layerblend@56180ba0 {
+        compatible = "fsl,imx8qxp-dc-layerblend";
+        reg = <0x56180ba0 0x10>, <0x5618a400 0x20>;
+        reg-names = "pec", "cfg";
+    };
diff --git a/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-matrix.yaml b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-matrix.yaml
new file mode 100644
index 000000000000..d773389dd0dc
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-matrix.yaml
@@ -0,0 +1,44 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/imx/fsl,imx8qxp-dc-matrix.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale i.MX8qxp Display Controller Color Matrix
+
+description:
+  The unit supports linear color transformation, alpha pre-multiply and
+  alpha masking.
+
+maintainers:
+  - Liu Ying <victor.liu@xxxxxxx>
+
+properties:
+  compatible:
+    const: fsl,imx8qxp-dc-matrix
+
+  reg:
+    minItems: 1
+    maxItems: 2
+
+  reg-names:
+    oneOf:
+      - const: cfg      # matrix in display engine
+      - items:          # matrix in pixel engine
+          - const: pec
+          - const: cfg
+
+required:
+  - compatible
+  - reg
+  - reg-names
+
+additionalProperties: false
+
+examples:
+  - |
+    matrix@5618bc00 {
+        compatible = "fsl,imx8qxp-dc-matrix";
+        reg = <0x5618bc00 0x3c>;
+        reg-names = "cfg";
+    };
diff --git a/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-rop.yaml b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-rop.yaml
new file mode 100644
index 000000000000..7115950ecae0
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-rop.yaml
@@ -0,0 +1,43 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/imx/fsl,imx8qxp-dc-rop.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale i.MX8qxp Display Controller Raster Operation Unit
+
+description: |
+  The unit can combine up to three input frames to a single output frame, all
+  having the same dimension.
+
+  The unit supports logic operations, arithmetic operations and packing.
+
+maintainers:
+  - Liu Ying <victor.liu@xxxxxxx>
+
+properties:
+  compatible:
+    const: fsl,imx8qxp-dc-rop
+
+  reg:
+    maxItems: 2
+
+  reg-names:
+    items:
+      - const: pec
+      - const: cfg
+
+required:
+  - compatible
+  - reg
+  - reg-names
+
+additionalProperties: false
+
+examples:
+  - |
+    rop@56180860 {
+        compatible = "fsl,imx8qxp-dc-rop";
+        reg = <0x56180860 0x10>, <0x56182000 0x20>;
+        reg-names = "pec", "cfg";
+    };
diff --git a/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-safety.yaml b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-safety.yaml
new file mode 100644
index 000000000000..66c12948ab09
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-safety.yaml
@@ -0,0 +1,34 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/imx/fsl,imx8qxp-dc-safety.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale i.MX8qxp Display Controller Safety Unit
+
+description:
+  The unit allows corresponding processing units to be configured in a path
+  leading to multiple endpoints.
+
+maintainers:
+  - Liu Ying <victor.liu@xxxxxxx>
+
+properties:
+  compatible:
+    const: fsl,imx8qxp-dc-safety
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    safety@56180800 {
+        compatible = "fsl,imx8qxp-dc-safety";
+        reg = <0x56180800 0x1c>;
+    };
diff --git a/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-scaling-engine.yaml b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-scaling-engine.yaml
new file mode 100644
index 000000000000..76cbe11a6364
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-scaling-engine.yaml
@@ -0,0 +1,83 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$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@xxxxxxx>
+
+properties:
+  compatible:
+    enum:
+      - fsl,imx8qxp-dc-hscaler
+      - fsl,imx8qxp-dc-vscaler
+
+  reg:
+    maxItems: 2
+
+  reg-names:
+    items:
+      - const: pec
+      - const: cfg
+
+required:
+  - compatible
+  - reg
+  - reg-names
+
+additionalProperties: false
+
+examples:
+  - |
+    hscaler@561808c0 {
+        compatible = "fsl,imx8qxp-dc-hscaler";
+        reg = <0x561808c0 0x10>, <0x56183000 0x18>;
+        reg-names = "pec", "cfg";
+    };
diff --git a/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-signature.yaml b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-signature.yaml
new file mode 100644
index 000000000000..c495822fdc80
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-signature.yaml
@@ -0,0 +1,53 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/imx/fsl,imx8qxp-dc-signature.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale i.MX8qxp Display Controller Signature Unit
+
+description: |
+  In order to control the correctness of display output, signature values can
+  be computed for each frame and compared against reference values. In case of
+  a mismatch (signature violation) a HW event can be triggered, for example a
+  SW interrupt.
+
+  This unit supports signature computation, reference check, evaluation windows,
+  alpha masking and panic modes.
+
+maintainers:
+  - Liu Ying <victor.liu@xxxxxxx>
+
+properties:
+  compatible:
+    const: fsl,imx8qxp-dc-signature
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 3
+
+  interrupt-names:
+    items:
+      - const: shdload
+      - const: valid
+      - const: error
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - interrupt-names
+
+additionalProperties: false
+
+examples:
+  - |
+    signature@5618d000 {
+        compatible = "fsl,imx8qxp-dc-signature";
+        reg = <0x5618d000 0x140>;
+        interrupt-parent = <&dc0_intc>;
+        interrupts = <22>, <23>, <24>;
+        interrupt-names = "shdload", "valid", "error";
+    };
diff --git a/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-store.yaml b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-store.yaml
new file mode 100644
index 000000000000..42d1b10906be
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-store.yaml
@@ -0,0 +1,96 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/imx/fsl,imx8qxp-dc-store.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale i.MX8qxp Display Controller Store Unit
+
+description: |
+  The Store unit is the interface between the internal pixel processing
+  pipeline, which is 30-bit RGB plus 8-bit Alpha, and the AXI bus for
+  destination buffer access. It is used for the destination of Blit Engines.
+  It comprises a set of built-in functions to generate a wide range of buffer
+  formats. Note, that these are exactly inverse to corresponding functions in
+  the Fetch Unit.
+
+  +------X-------------------------+
+  |      |              Store Unit |
+  |      V                         |
+  |  +-------+                     |
+  |  | Gamma | Gamma apply         |
+  |  +-------+                     |
+  |      |                         |
+  |      V                         |
+  |  +-------+                     |
+  |  | Color | RGB to YUV          |
+  |  +-------+                     |
+  |      |                         |
+  |      V                         |
+  |  +-------+                     |
+  |  | Chroma| YUV444 to 422       |
+  |  +-------+                     |
+  |      |                         |
+  |      V                         |
+  |  +-------+                     |
+  |  | Reduce| Bit width reduction |
+  |  |       | dithering           |
+  |  +-------+                     |
+  |      |                         |
+  |      V                         |
+  |  +-------+                     |
+  |  | Pack  | RGBA/YUV to RAW     |
+  |  | Encode| or Compression      |
+  |  +-------+                     |
+  |      |                         |
+  |      V                         |
+  +------X-------------------------+
+
+maintainers:
+  - Liu Ying <victor.liu@xxxxxxx>
+
+properties:
+  compatible:
+    const: fsl,imx8qxp-dc-store
+
+  reg:
+    maxItems: 2
+
+  reg-names:
+    items:
+      - const: pec
+      - const: cfg
+
+  interrupts:
+    maxItems: 3
+
+  interrupt-names:
+    items:
+      - const: shdload
+      - const: framecomplete
+      - const: seqcomplete
+
+  fsl,lts:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      Optional Linear Tile Store associated with the Store Unit.
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - interrupts
+  - interrupt-names
+
+additionalProperties: false
+
+examples:
+  - |
+    store@56180940 {
+        compatible = "fsl,imx8qxp-dc-store";
+        reg = <0x56180940 0x1c>, <0x56184000 0x5c>;
+        reg-names = "pec", "cfg";
+        interrupt-parent = <&dc0_intc>;
+        interrupts = <0>, <1>, <2>;
+        interrupt-names = "shdload", "framecomplete", "seqcomplete";
+    };
diff --git a/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-tcon.yaml b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-tcon.yaml
new file mode 100644
index 000000000000..7a3b77ea92c7
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-tcon.yaml
@@ -0,0 +1,45 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/imx/fsl,imx8qxp-dc-tcon.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale i.MX8qxp Display Controller Timing Controller
+
+description:
+  The TCon can generate a wide range of customized synchronization signals and
+  does the mapping of the color bits to the output.
+
+maintainers:
+  - Liu Ying <victor.liu@xxxxxxx>
+
+properties:
+  compatible:
+    const: fsl,imx8qxp-dc-tcon
+
+  reg:
+    maxItems: 1
+
+  port:
+    $ref: /schemas/graph.yaml#/properties/port
+    description: video output
+
+required:
+  - compatible
+  - reg
+  - port
+
+additionalProperties: false
+
+examples:
+  - |
+    tcon@5618c800 {
+        compatible = "fsl,imx8qxp-dc-tcon";
+        reg = <0x5618c800 0x588>;
+
+        port {
+            dc0_disp0_dc0_pixel_combiner_ch0: endpoint {
+                remote-endpoint = <&dc0_pixel_combiner_ch0_dc0_disp0>;
+            };
+        };
+    };
-- 
2.34.1




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