Linux device tree overlay syntax

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what is the meaning of “ids =”>=3448-0000-100", “>=3448-0002-100” in following device tree overlay operation ?

plugin-manager {

	fragement@0 {
		ids = ">=3448-0000-100", ">=3448-0002-100";

		override@0 {
			target = <0xae>;

			_overlay_ {

				channel@0 {
					ti,rail-name = "POM_5V_IN";
				};

				channel@1 {
					ti,rail-name = "POM_5V_GPU";
				};
			};
		};
	};