Am 2022-08-18 16:05, schrieb Vladimir Oltean:
The Ethernet switch embedded within the NXP LS1028A has 2 Ethernet
ports
towards the host, for local packet termination. In current device
trees,
only the first port is enabled. Enabling the second port allows having
a
higher termination throughput.
Is it used automatically or does the userspace has to configure
something?
Care has been taken that this change does not produce regressions when
using updated device trees with old kernels that do not support
multiple
DSA CPU ports. The only difference for old kernels will be the
appearance of a new net device (for &enetc_port3) which will not be
very
useful for much of anything.
Mh, I don't understand. Does it now cause regressions or not? I mean
besides that there is a new unused interface?
I was just thinking of that systemready stuff where the u-boot might
supply its (newer) device tree to an older kernel, i.e. an older debian
or similar.
-michael
