xref: /linux/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-store.yaml (revision 8d2b0853add1d7534dc0794e3c8e0b9e8c4ec640) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/display/imx/fsl,imx8qxp-dc-store.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Freescale i.MX8qxp Display Controller Store Unit
8
9description: |
10  The Store unit is the interface between the internal pixel processing
11  pipeline, which is 30-bit RGB plus 8-bit Alpha, and the AXI bus for
12  destination buffer access. It is used for the destination of Blit Engines.
13  It comprises a set of built-in functions to generate a wide range of buffer
14  formats. Note, that these are exactly inverse to corresponding functions in
15  the Fetch Unit.
16
17  +------X-------------------------+
18  |      |              Store Unit |
19  |      V                         |
20  |  +-------+                     |
21  |  | Gamma | Gamma apply         |
22  |  +-------+                     |
23  |      |                         |
24  |      V                         |
25  |  +-------+                     |
26  |  | Color | RGB to YUV          |
27  |  +-------+                     |
28  |      |                         |
29  |      V                         |
30  |  +-------+                     |
31  |  | Chroma| YUV444 to 422       |
32  |  +-------+                     |
33  |      |                         |
34  |      V                         |
35  |  +-------+                     |
36  |  | Reduce| Bit width reduction |
37  |  |       | dithering           |
38  |  +-------+                     |
39  |      |                         |
40  |      V                         |
41  |  +-------+                     |
42  |  | Pack  | RGBA/YUV to RAW     |
43  |  | Encode| or Compression      |
44  |  +-------+                     |
45  |      |                         |
46  |      V                         |
47  +------X-------------------------+
48
49maintainers:
50  - Liu Ying <victor.liu@nxp.com>
51
52properties:
53  compatible:
54    const: fsl,imx8qxp-dc-store
55
56  reg:
57    maxItems: 2
58
59  reg-names:
60    items:
61      - const: pec
62      - const: cfg
63
64  interrupts:
65    maxItems: 3
66
67  interrupt-names:
68    items:
69      - const: shdload
70      - const: framecomplete
71      - const: seqcomplete
72
73  fsl,lts:
74    $ref: /schemas/types.yaml#/definitions/phandle
75    description:
76      Optional Linear Tile Store associated with the Store Unit.
77
78required:
79  - compatible
80  - reg
81  - reg-names
82  - interrupts
83  - interrupt-names
84
85additionalProperties: false
86
87examples:
88  - |
89    store@56180940 {
90        compatible = "fsl,imx8qxp-dc-store";
91        reg = <0x56180940 0x1c>, <0x56184000 0x5c>;
92        reg-names = "pec", "cfg";
93        interrupt-parent = <&dc0_intc>;
94        interrupts = <0>, <1>, <2>;
95        interrupt-names = "shdload", "framecomplete", "seqcomplete";
96    };
97