u-boot:k3-am62x-sk-common.dtsi
	memory@80000000 {
		device_type = "memory";
		/* 512M RAM */
	+   reg = <0x00000000 0x80000000 0x00000000 0x20000000>;//512M
	-	reg = <0x00000000 0x80000000 0x00000000 0x80000000>;// 2G

	};
	
	k3-am62x-r5-sk-common.dtsi
		memory@80000000 {
		device_type = "memory";
		/* 512M RAM */
	+	reg = <0x00000000 0x80000000 0x00000000 0x20000000>;//512M
	-	reg = <0x00000000 0x80000000 0x00000000 0x80000000>;//2G

		u-boot,dm-spl;
	};


kernel：k3-am625-sd.dts

	memory@80000000 {
		device_type = "memory";
		/* 512M RAM */
	+	reg = <0x00000000 0x80000000 0x00000000 0x20000000>;//512M
	-	reg = <0x00000000 0x80000000 0x00000000 0x80000000>;//2G

	};