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
7 title: Xilinx ZynqMP DisplayPort Subsystem
8
9 description: |
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
44 maintainers:
45 - Laurent Pinchart <laurent.pinchart@ideasonboard.com>
46
47 properties:
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
120 required:
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
134 additionalProperties: false
135
136 examples:
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>,
164 <&psgtr 0 PHY_TYPE_DP 1 3>;
165
166 phy-names = "dp-phy0", "dp-phy1";
167 };
168
169 ...
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