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AM4376: uboot的设备树和内核的设备树有什么区别?

Part Number: AM4376


AM437X_GP_EVM开发板

uboot编译后,如下目录中有am437x-gp-evm.dtb文件

board-support\u-boot-2017.01\arch\arm\dts\am437x-gp-evm.dtb

内核编译后,如下目录也有个am437x-gp-evm.dtb

board-support\linux-4.9.59\arch\arm\boot\dts\am437x-gp-evm.dtb

请问这两个dtb有什么区别?都分别在什么情况下使用?