1STMicroelectronics STM32 Digital Camera Memory Interface (DCMI)
2
3Required properties:
4- compatible: "st,stm32-dcmi"
5- reg: physical base address and length of the registers set for the device
6- interrupts: should contain IRQ line for the DCMI
7- resets: reference to a reset controller,
8          see Documentation/devicetree/bindings/reset/st,stm32-rcc.txt
9- clocks: list of clock specifiers, corresponding to entries in
10          the clock-names property
11- clock-names: must contain "mclk", which is the DCMI peripherial clock
12- pinctrl: the pincontrol settings to configure muxing properly
13           for pins that connect to DCMI device.
14           See Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.yaml.
15- dmas: phandle to DMA controller node,
16        see Documentation/devicetree/bindings/dma/stm32-dma.txt
17- dma-names: must contain "tx", which is the transmit channel from DCMI to DMA
18
19DCMI supports a single port node with parallel bus. It should contain one
20'port' child node with child 'endpoint' node. Please refer to the bindings
21defined in Documentation/devicetree/bindings/media/video-interfaces.txt.
22
23Example:
24
25	dcmi: dcmi@50050000 {
26		compatible = "st,stm32-dcmi";
27		reg = <0x50050000 0x400>;
28		interrupts = <78>;
29		resets = <&rcc STM32F4_AHB2_RESET(DCMI)>;
30		clocks = <&rcc 0 STM32F4_AHB2_CLOCK(DCMI)>;
31		clock-names = "mclk";
32		pinctrl-names = "default";
33		pinctrl-0 = <&dcmi_pins>;
34		dmas = <&dma2 1 1 0x414 0x3>;
35		dma-names = "tx";
36		port {
37			dcmi_0: endpoint {
38				remote-endpoint = <...>;
39				bus-width = <8>;
40				hsync-active = <0>;
41				vsync-active = <0>;
42				pclk-sample = <1>;
43			};
44		};
45	};
46