A Device Tree Node Example

A Simple Node

A very simple device tree^[1] node sample.

/ {
	node@0 {
		a-string-property = "this is a string";
		a-string-list-property = "a string", "b string";
		a-byte-data-property = [0x01, 0x02, 0x03, 0x04];
		a-cell-property = <1 2 3 4>;
		child-node@0 {
			first-child-property;
			second-child-property = <1>;
			reference-node = <&node1>; // a phandle which reference to another node.
		};
	};
}

• node@0 is a node called node with index 0.
• &node1 is a phandle points to another node, which node1 is a lable, not a node name.
• String as a property
  • A string property use double quote to enclose string.
  • e.g. a-string-property = "this is a string"
• String List as a property
  • A string list contains a list of strings. Each string use comma to divide them into a list.
  • e.g. a-string-list-property = "a string", "b string";
• Byte List as a property
  • A byte list contains a list of bytes.
  • e.g. a-byte-list-property = [0x01, 0x02, 0x03, 0x04].