为什么引入设备树
设备树基本概念
cd linux-imx-rel_imx_4.1.15_2.1.0_ga_alientek/arch/arm/boot/dts
ls imx6ull*
imx6ull-14x14-ddr3-arm2-adc.dts imx6ull-14x14-ddr3-arm2-ldo.dts imx6ull-14x14-evk-btwifi.dts imx6ull-alientek-emmc.dts
imx6ull-14x14-ddr3-arm2-cs42888.dts imx6ull-14x14-ddr3-arm2-qspi-all.dts imx6ull-14x14-evk-emmc.dts imx6ull-alientek-nand.dts
imx6ull-14x14-ddr3-arm2-ecspi.dts imx6ull-14x14-ddr3-arm2-qspi.dts imx6ull-14x14-evk-gpmi-weim.dts imx6ull-pinfunc-snvs.h
imx6ull-14x14-ddr3-arm2-emmc.dts imx6ull-14x14-ddr3-arm2-tsc.dts imx6ull-14x14-evk-usb-certi.dts imx6ull-pinfunc.h
imx6ull-14x14-ddr3-arm2-epdc.dts imx6ull-14x14-ddr3-arm2-uart2.dts imx6ull-14x14-evk.dts imx6ull.dtsi
imx6ull-14x14-ddr3-arm2-flexcan2.dts imx6ull-14x14-ddr3-arm2-usb.dts imx6ull-9x9-evk-btwifi.dts
imx6ull-14x14-ddr3-arm2-gpmi-weim.dts imx6ull-14x14-ddr3-arm2-wm8958.dts imx6ull-9x9-evk-ldo.dts
imx6ull-14x14-ddr3-arm2-lcdif.dts imx6ull-14x14-ddr3-arm2.dts imx6ull-9x9-evk.dts
编译设备树
dtc源码位置:linux-imx-rel_imx_4.1.15_2.1.0_ga_alientek/scripts/dtc
编译Linux内核时会顺便编译 dtc 源码,生成 dtc 设备树编译器可执行文件.
然后使用 dtc 编译器编译设备树源码
dtc -I dts -O dtb -o hello.dtb hello.dts
