Yocto: customize device tree .dtsi before bitbake build image sdcard

[karolmlynczak]

Hello all.

I am writing in reference to the post
https://community.nxp.com/docs/DOC-328663

I'm using yocto / toaster to build a system image.

In the directory /boot
I have such drivers:
imx7d-sdb.dtb
imx7d-sdb-epdc.dtb

After setting in u-boot:
setenv fdt_file imx7d-sdb.dtb
I have access to the network but I do not have access to epdc.

After choosing:
setenv fdt_file imx7d-sdb.dtb
vice versa. Epdc works but network does not work.

I found google content in the file
Imx7d-sdb-epdc.dtsi in which i see
"Disabled" status on network interfaces.

Where can I find the file imx7d-sdb-epdc.dtsi in my yocto project
So that I could edit this file before building the system
And enable network support.

For help thank you in advance.
Greetings Karol Mlynczak

[Carlos_Musich]

Hi Karol,

within your build directory you can find all device tree sources (.dts and .dtsi) inside the kernel -source folder on arch/arm/boot/dts

Best regards,
TIC

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[imx7newbie]

Hi,

in kernel -source folder on arch/arm/boot/dts (in my case  /opt/PHYTEC_BSPs/yocto_imx7/build/tmp/work-shared/imx7d-phyboard-zeta-001/kernel-source/arch/arm/boot/dts) there are thousands of dts and dtsi files and confusing. Which one is right one for PCIE? I would like to increase memory size.

[Carlos_Musich]

Hi Karol,

imx7d-sdb-epdc.dts is not in this path?