xref: /linux/Documentation/devicetree/bindings/media/cdns,csi2tx.txt (revision e5a52fd2b8cdb700b3c07b030e050a49ef3156b9) 
1Cadence MIPI-CSI2 TX controller
2===============================
3
4The Cadence MIPI-CSI2 TX controller is a CSI-2 bridge supporting up to
54 CSI lanes in output, and up to 4 different pixel streams in input.
6
7Required properties:
8  - compatible: must be set to "cdns,csi2tx" or "cdns,csi2tx-1.3"
9    for version 1.3 of the controller, "cdns,csi2tx-2.1" for v2.1
10  - reg: base address and size of the memory mapped region
11  - clocks: phandles to the clocks driving the controller
12  - clock-names: must contain:
13    * esc_clk: escape mode clock
14    * p_clk: register bank clock
15    * pixel_if[0-3]_clk: pixel stream output clock, one for each stream
16                         implemented in hardware, between 0 and 3
17
18Optional properties
19  - phys: phandle to the D-PHY. If it is set, phy-names need to be set
20  - phy-names: must contain "dphy"
21
22Required subnodes:
23  - ports: A ports node with one port child node per device input and output
24           port, in accordance with the video interface bindings defined in
25           Documentation/devicetree/bindings/media/video-interfaces.txt. The
26           port nodes are numbered as follows.
27
28           Port Description
29           -----------------------------
30           0    CSI-2 output
31           1    Stream 0 input
32           2    Stream 1 input
33           3    Stream 2 input
34           4    Stream 3 input
35
36           The stream input port nodes are optional if they are not
37           connected to anything at the hardware level or implemented
38           in the design. Since there is only one endpoint per port,
39           the endpoints are not numbered.
40
41Example:
42
43csi2tx: csi-bridge@0d0e1000 {
44	compatible = "cdns,csi2tx";
45	reg = <0x0d0e1000 0x1000>;
46	clocks = <&byteclock>, <&byteclock>,
47		 <&coreclock>, <&coreclock>,
48		 <&coreclock>, <&coreclock>;
49	clock-names = "p_clk", "esc_clk",
50		      "pixel_if0_clk", "pixel_if1_clk",
51		      "pixel_if2_clk", "pixel_if3_clk";
52
53	ports {
54		#address-cells = <1>;
55		#size-cells = <0>;
56
57		port@0 {
58			reg = <0>;
59
60			csi2tx_out: endpoint {
61				remote-endpoint = <&remote_in>;
62				clock-lanes = <0>;
63				data-lanes = <1 2>;
64			};
65		};
66
67		port@1 {
68			reg = <1>;
69
70			csi2tx_in_stream0: endpoint {
71				remote-endpoint = <&stream0_out>;
72			};
73		};
74
75		port@2 {
76			reg = <2>;
77
78			csi2tx_in_stream1: endpoint {
79				remote-endpoint = <&stream1_out>;
80			};
81		};
82
83		port@3 {
84			reg = <3>;
85
86			csi2tx_in_stream2: endpoint {
87				remote-endpoint = <&stream2_out>;
88			};
89		};
90
91		port@4 {
92			reg = <4>;
93
94			csi2tx_in_stream3: endpoint {
95				remote-endpoint = <&stream3_out>;
96			};
97		};
98	};
99};
100