Thanks Gabriele, Yes, I have already added KERNEL_DEVICETREE = "imx6ull-14x14-evk.dtb" to generate an image running on imx6 EVK. What I don't understand is how that imx6ull-14x14-evk.dtb was compiled? I thought all dtb are compiled from dts files, but there is no imx6ull-14x14-evk.dts, the imx6ullevk.conf defined the EVK but there is no detail in that file.
My second question is my new hardware based on imx6ull MCU now has a dts file, since I could not see any samples how is the dtb compiled from a dts file, I have no idea where to put the dts file, how to link that dts file to generate a dtb file in recipe. Appreciate more clarification. Thank you. - jh On 5/6/19, Gabriele Zampieri <gabbla.mal...@gmail.com> wrote: > Hi, > > The easiest way is to add them via patches. You can write a recipe that > patch the Linux tree and put it in your meta layer (usually in > meta-xxx/recipes-kernel/linux). Then you need to tell Yocto to export the > dtb via KERNEL_DEVICETREE variable ( > https://www.yoctoproject.org/docs/latest/mega-manual/mega-manual.html#var-KERNEL_DEVICETREE). > I usually put this variable in my machine configuration. > > Gabriele > > Il giorno dom 5 mag 2019 alle ore 14:04 JH <jupiter....@gmail.com> ha > scritto: > >> Hi, >> >> I think the device tree blob is build from device tree source, but I >> could not find any dts files in recipe source directory, there are >> many dts files in build directory and there are dtb in build >> directory. >> >> If I have a device tree source, where I should put it and how to >> define the recipe to built it? >> >> Thank you. >> >> Kind regards, >> >> - jupiter >> -- >> _______________________________________________ >> yocto mailing list >> yocto@yoctoproject.org >> https://lists.yoctoproject.org/listinfo/yocto >> > -- _______________________________________________ yocto mailing list yocto@yoctoproject.org https://lists.yoctoproject.org/listinfo/yocto
