Ok no issue. Sorry but I don't see what could be the issue. What is the result of these 2 cmd below on your side ?
root@stm32mp2:~# cat /sys/class/net/end*/address10:e7:7a:e3:b8:e110:e7:7a:e3:b8:e2root@stm32mp2:~# cat /sys/class/net/sw*/address10:e7:...
especially this sequence =
ip link add name br0 type bridge
ip link set dev br0 up
ip link set dev sw0p1 master br0 up
ip link set dev sw0p2 master br0 up
ip link set dev sw0p3 master br0 up
ip link set dev sw0ep up
