Messages in this thread | | | Date | Thu, 18 Aug 2022 16:49:49 +0200 | From | Michael Walle <> | Subject | Re: [PATCH devicetree 0/3] NXP LS1028A DT changes for multiple switch CPU ports |
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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
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