1Allwinner V3s Camera Sensor Interface
2-------------------------------------
3
4Allwinner V3s SoC features a CSI module(CSI1) with parallel interface.
5
6Required properties:
7  - compatible: value must be one of:
8    * "allwinner,sun6i-a31-csi"
9    * "allwinner,sun8i-a83t-csi"
10    * "allwinner,sun8i-h3-csi"
11    * "allwinner,sun8i-v3s-csi"
12    * "allwinner,sun50i-a64-csi"
13  - reg: base address and size of the memory-mapped region.
14  - interrupts: interrupt associated to this IP
15  - clocks: phandles to the clocks feeding the CSI
16    * bus: the CSI interface clock
17    * mod: the CSI module clock
18    * ram: the CSI DRAM clock
19  - clock-names: the clock names mentioned above
20  - resets: phandles to the reset line driving the CSI
21
22The CSI node should contain one 'port' child node with one child 'endpoint'
23node, according to the bindings defined in
24Documentation/devicetree/bindings/media/video-interfaces.txt.
25
26Endpoint node properties for CSI
27---------------------------------
28See the video-interfaces.txt for a detailed description of these properties.
29- remote-endpoint	: (required) a phandle to the bus receiver's endpoint
30			   node
31- bus-width:		: (required) must be 8, 10, 12 or 16
32- pclk-sample		: (optional) (default: sample on falling edge)
33- hsync-active		: (required; parallel-only)
34- vsync-active		: (required; parallel-only)
35
36Example:
37
38csi1: csi@1cb4000 {
39	compatible = "allwinner,sun8i-v3s-csi";
40	reg = <0x01cb4000 0x1000>;
41	interrupts = <GIC_SPI 84 IRQ_TYPE_LEVEL_HIGH>;
42	clocks = <&ccu CLK_BUS_CSI>,
43		 <&ccu CLK_CSI1_SCLK>,
44		 <&ccu CLK_DRAM_CSI>;
45	clock-names = "bus", "mod", "ram";
46	resets = <&ccu RST_BUS_CSI>;
47
48	port {
49		/* Parallel bus endpoint */
50		csi1_ep: endpoint {
51			remote-endpoint = <&adv7611_ep>;
52			bus-width = <16>;
53
54			/* If hsync-active/vsync-active are missing,
55			   embedded BT.656 sync is used */
56			hsync-active = <0>; /* Active low */
57			vsync-active = <0>; /* Active low */
58			pclk-sample = <1>;  /* Rising */
59		};
60	};
61};
62