Hi fixitfeliks,
Sorry for the delay, I'm not often connected to this forum.
I double checked, on Pi 5, EEE is confirmed to be both Enabled and Active when connected to an EEE compliant device.
(When connecting the Pi 5 directly to a computer on which EEE status monitoring is available, it is possible to see if the connected peer is using EEE or not, using ethtool --show eee IFNAME)
I added a message to https://github.com/raspberrypi/linux/issues/6065 as I didn't notice there was an issue on github about it.
However, I now wonder what the message about "no mention of EEE into the documentation" was telling:
- is this a "can't do anything, no existing documentation about it, so problem closed"
- or a "there isn't EEE into Pi 5 RP1 chip" (which is obviously wrong)
In any case, RP1 documentation only says:
"The ethernet subsystem is implemented using the Cadence Gigabit Ethernet MAC (GEM_GXL 1p09) IP"
I've found a partial documentation (shared in my previous message) of Cadence Gigabit Ethernet MAC IP, listing all setting registers, but the meaning of each register bit isn't provided. Full documentation about the Cadence Gigabit Ethernet MAC IP seems to be restricted to Cadence customers (Raspberry Pi engineers probably have access to it).
Sorry for the delay, I'm not often connected to this forum.
I double checked, on Pi 5, EEE is confirmed to be both Enabled and Active when connected to an EEE compliant device.
(When connecting the Pi 5 directly to a computer on which EEE status monitoring is available, it is possible to see if the connected peer is using EEE or not, using ethtool --show eee IFNAME)
I added a message to https://github.com/raspberrypi/linux/issues/6065 as I didn't notice there was an issue on github about it.
However, I now wonder what the message about "no mention of EEE into the documentation" was telling:
- is this a "can't do anything, no existing documentation about it, so problem closed"
- or a "there isn't EEE into Pi 5 RP1 chip" (which is obviously wrong)
In any case, RP1 documentation only says:
"The ethernet subsystem is implemented using the Cadence Gigabit Ethernet MAC (GEM_GXL 1p09) IP"
I've found a partial documentation (shared in my previous message) of Cadence Gigabit Ethernet MAC IP, listing all setting registers, but the meaning of each register bit isn't provided. Full documentation about the Cadence Gigabit Ethernet MAC IP seems to be restricted to Cadence customers (Raspberry Pi engineers probably have access to it).
Statistics: Posted by julienrobin28 — Sat Jun 22, 2024 4:15 am