Skip to content

Using W5500 with CM4 + CM4IO board (CM4 + CM4IO 보드에서 W5500 사용하기)

A user on the Raspberry Pi forum resolved intermittent boot failures with a W5500 SPI Ethernet module on a CM4+CM4IO board by powering it from a separate extern

gunn

Published July 10, 2026

100 UCC

6 VAR

Original author: automata141Original source (new tab)

Using W5500 with CM4 + CM4IO board (CM4 + CM4IO 보드에서 W5500 사용하기)

Components

Hardware components
W5500

WIZnet - W5500

x 1

WIZnet parts

Project description

This is a troubleshooting thread on the W5500 dual Ethernet configuration on the CM4 (Compute Module 4) + CM4IO board on the Raspberry Pi official forum (raspberrypi.org). Summary of article problem situation User (automata141) attempted to add a second Ethernet port (eth1) by connecting a W5500 module to the CM4+CM4IO board with a 40-pin expansion header (SPI). An interface is created with the settings dtoverlay=w5500,int_pin=25,cs=0,speed=15000000, but a problem occurs in which actual network communication does not occur. The same wiring/settings work normally on a regular Raspberry Pi 4…

Keep reading with a free account

Guests can read 15 projects per visit. Log in or create a free account to read the full description, open the documents and join the comments.

Similar projects you might like