topic Re: Machine with no Ethernet in i.MX Processors

Machine with no Ethernet

moose — Thu, 24 Aug 2023 17:12:14 GMT

Hello, how do I remove ethernet support from my machine configuration in yocto? My machine is based on imx8mn-evk, which includes a line to specify wifi and Bluetooth but not ethernet.

MACHINE_FEATURES += "wifi bluetooth bcm43455 bcm4356 nxp8987-sdio"

I also searched imx-base.inc, but I didn't see a reference for ethernet.

Currently, the image works on my hardware; however, there are a few error messages related to UBOOT and kernel trying to access ethernet, but I don't have ethernet on my board. Just wifi. Any ideas?

Re: Machine with no Ethernet

JosephAtNXP — Mon, 28 Aug 2023 05:30:07 GMT

Hi,

Thank you for your interest in NXP Semiconductor products,

Are they removed from u-boot and linux device trees?

Regards

Re: Machine with no Ethernet

moose — Mon, 28 Aug 2023 20:00:58 GMT

Yes, they are. Below is the u-boot message I get:

Re: Machine with no Ethernet

JosephAtNXP — Wed, 30 Aug 2023 03:57:11 GMT

Hi,

Could you provide .dtb to confirm it?

Also, try removing support from board config, see this.

Regards

Re: Machine with no Ethernet

moose — Thu, 07 Sep 2023 03:23:36 GMT

@JosephAtNXP I can confirm that both dts and board config files do not have ethernet enabled. Within our board dts we have:

&fec1{ status = "disabled"; };

and in our board config we have:

CONFIG_FEC_MXC=n CONFIG_PHYLIB=n CONFIG_PHY_ATHEROS=n CONFIG_DM_ETH=n

Happy to share files over a private message. Thx!

Re: Machine with no Ethernet

JosephAtNXP — Mon, 11 Sep 2023 18:48:34 GMT

Hi,

I made it work with the diff attached.

Check:

Net: CPU Net Initialization Failed No ethernet found. Fastboot: Normal Normal Boot Hit any key to stop autoboot: 0 u-boot ==> pri ipaddr ## Error: "ipaddr" not defined u-boot ==> pri ethprime ethprime=eth1 u-boot ==> mdio Unknown command 'mdio' - try 'help' u-boot ==>

Thank you!