設備樹編譯工具DTC

DTC將.dts編譯為.dtb的工具。DTC的源代碼在目錄scripts/dtc目錄中

內核使能了設備樹。編譯內核的時候DTC工具會自動被編譯出來，對應於

scripts/dtc/Makefile  中 hostprogs-y := dtc

 也可以單獨安裝DTC

sudo apt-get install device-tree-compiler

 在linux內核的arch/arm/boot/Makefile中。定義了哪些dtb文件會被編譯出來，如下

dtb-$(CONFIG_SOC_AM33XX) += \
	am335x-lxm.dtb \
	am335x-pigoa800.dtb \
	am335x-pigoa800-1g.dtb \
	am335x-pigoa810.dtb \
	am335x-pigoa810-1g.dtb \
	am335x-pigoa840.dtb \
	am335x-pigoa840-1g.dtb \
	am335x-pigoa84x.dtb \
	am335x-pigoa84x-1g.dtb \
	am335x-pigoa84x-ram1g-nand1g.dtb \
	am335x-pigoa84x-ram1g-nand256.dtb \
	am335x-pigoa84x-ram512g-nand1g.dtb \
	am335x-pigoa84x-ram512-nand256.dtb  \
	am335x-ieda800-1g.dtb \
	am335x-chiliboard.dtb \
	am335x-wega-rdk.dtb

在linux下，我們可以單獨編譯設備樹

make dtbs

　反匯編

./scripts/dtc/dtc -I dtb -o dts -o xxx.dts arch/arm/boot/dts/xxx.dtb