xref: /linux/Documentation/devicetree/bindings/display/xlnx/xlnx,zynqmp-dpsub.yaml (revision 9dbbc3b9d09d6deba9f3b9e1d5b355032ed46a75) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/display/xlnx/xlnx,zynqmp-dpsub.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Xilinx ZynqMP DisplayPort Subsystem
8
9description: |
10  The DisplayPort subsystem of Xilinx ZynqMP (Zynq UltraScale+ MPSoC)
11  implements the display and audio pipelines based on the DisplayPort v1.2
12  standard. The subsystem includes multiple functional blocks as below:
13
14               +------------------------------------------------------------+
15  +--------+   | +----------------+     +-----------+                       |
16  | DPDMA  | --->|                | --> |   Video   | Video +-------------+ |
17  | 4x vid |   | |                |     | Rendering | -+--> |             | |   +------+
18  | 2x aud |   | |  Audio/Video   | --> | Pipeline  |  |    | DisplayPort |---> | PHY0 |
19  +--------+   | | Buffer Manager |     +-----------+  |    |   Source    | |   +------+
20               | |    and STC     |     +-----------+  |    | Controller  | |   +------+
21  Live Video --->|                | --> |   Audio   | Audio |             |---> | PHY1 |
22               | |                |     |   Mixer   | --+-> |             | |   +------+
23  Live Audio --->|                | --> |           |  ||   +-------------+ |
24               | +----------------+     +-----------+  ||                   |
25               +---------------------------------------||-------------------+
26                                                       vv
27                                                 Blended Video and
28                                                 Mixed Audio to PL
29
30  The Buffer Manager interacts with external interface such as DMA engines or
31  live audio/video streams from the programmable logic. The Video Rendering
32  Pipeline blends the video and graphics layers and performs colorspace
33  conversion. The Audio Mixer mixes the incoming audio streams. The DisplayPort
34  Source Controller handles the DisplayPort protocol and connects to external
35  PHYs.
36
37  The subsystem supports 2 video and 2 audio streams, and various pixel formats
38  and depths up to 4K@30 resolution.
39
40  Please refer to "Zynq UltraScale+ Device Technical Reference Manual"
41  (https://www.xilinx.com/support/documentation/user_guides/ug1085-zynq-ultrascale-trm.pdf)
42  for more details.
43
44maintainers:
45  - Laurent Pinchart <laurent.pinchart@ideasonboard.com>
46
47properties:
48  compatible:
49    const: xlnx,zynqmp-dpsub-1.7
50
51  reg:
52    maxItems: 4
53  reg-names:
54    items:
55      - const: dp
56      - const: blend
57      - const: av_buf
58      - const: aud
59
60  interrupts:
61    maxItems: 1
62
63  clocks:
64    description:
65      The APB clock and at least one video clock are mandatory, the audio clock
66      is optional.
67    minItems: 2
68    items:
69      - description: dp_apb_clk is the APB clock
70      - description: dp_aud_clk is the Audio clock
71      - description:
72          dp_vtc_pixel_clk_in is the non-live video clock (from Processing
73          System)
74      - description:
75          dp_live_video_in_clk is the live video clock (from Programmable
76          Logic)
77  clock-names:
78    oneOf:
79      - minItems: 2
80        items:
81          - const: dp_apb_clk
82          - enum: [ dp_vtc_pixel_clk_in, dp_live_video_in_clk ]
83          - enum: [ dp_vtc_pixel_clk_in, dp_live_video_in_clk ]
84      - minItems: 3
85        items:
86          - const: dp_apb_clk
87          - const: dp_aud_clk
88          - enum: [ dp_vtc_pixel_clk_in, dp_live_video_in_clk ]
89          - enum: [ dp_vtc_pixel_clk_in, dp_live_video_in_clk ]
90
91  power-domains:
92    maxItems: 1
93
94  resets:
95    maxItems: 1
96
97  dmas:
98    items:
99      - description: Video layer, plane 0 (RGB or luma)
100      - description: Video layer, plane 1 (U/V or U)
101      - description: Video layer, plane 2 (V)
102      - description: Graphics layer
103  dma-names:
104    items:
105      - const: vid0
106      - const: vid1
107      - const: vid2
108      - const: gfx0
109
110  phys:
111    description: PHYs for the DP data lanes
112    minItems: 1
113    maxItems: 2
114  phy-names:
115    minItems: 1
116    items:
117      - const: dp-phy0
118      - const: dp-phy1
119
120required:
121  - compatible
122  - reg
123  - reg-names
124  - interrupts
125  - clocks
126  - clock-names
127  - power-domains
128  - resets
129  - dmas
130  - dma-names
131  - phys
132  - phy-names
133
134additionalProperties: false
135
136examples:
137  - |
138    #include <dt-bindings/phy/phy.h>
139    #include <dt-bindings/reset/xlnx-zynqmp-resets.h>
140
141    display@fd4a0000 {
142        compatible = "xlnx,zynqmp-dpsub-1.7";
143        reg = <0xfd4a0000 0x1000>,
144              <0xfd4aa000 0x1000>,
145              <0xfd4ab000 0x1000>,
146              <0xfd4ac000 0x1000>;
147        reg-names = "dp", "blend", "av_buf", "aud";
148        interrupts = <0 119 4>;
149        interrupt-parent = <&gic>;
150
151        clock-names = "dp_apb_clk", "dp_aud_clk", "dp_live_video_in_clk";
152        clocks = <&dp_aclk>, <&clkc 17>, <&si570_1>;
153
154        power-domains = <&pd_dp>;
155        resets = <&reset ZYNQMP_RESET_DP>;
156
157        dma-names = "vid0", "vid1", "vid2", "gfx0";
158        dmas = <&xlnx_dpdma 0>,
159               <&xlnx_dpdma 1>,
160               <&xlnx_dpdma 2>,
161               <&xlnx_dpdma 3>;
162
163        phys = <&psgtr 1 PHY_TYPE_DP 0 3 27000000>,
164               <&psgtr 0 PHY_TYPE_DP 1 3 27000000>;
165
166        phy-names = "dp-phy0", "dp-phy1";
167    };
168
169...
170