如何在 Yocto 的 kernel 中添加更改的 dts 文件？

Question

How to add changed dts file and add own configure kernel file (.conf)in Yocto project? What recipe should i change and how?

Answer 1

For your purpose I would create my own layer then add kernel bbhappend:

sources/meta-ziegfried/recipes-kernel/linux/linux-tn-imx_%.bbappend

for the recipe exact name you should specify your exact kernel recipe name instead of mine. To know the name you can do:

$ oe-pkgdata-util lookup-recipe kernel

Then create a sources/meta-ziegfried/recipes-kernel/linux/patchs/ directory and simply add your modification of dts within a patch:

$ cat sources/meta-ziegfried/recipes-kernel/linux/linux-tn-imx_%.bbappend

FILESEXTRAPATHS_prepend := "${THISDIR}/patchs:"

SRC_URI += " file://0001-add-ziegfried-modified-dts.patch \
       "

And voilà that will automatically add your dts in the kernel.

For the kernel conf regarding the yocto version you are using you can use kernel fragment:

https://www.yoctoproject.org/docs/2.5/kernel-dev/kernel-dev.html#creating-config-fragments