Messages in this thread | | | Date | Fri, 17 Feb 2023 09:13:30 -0800 | Subject | Re: BCM54220: After the BCM54220 closes the auto-negotiation, the configuration forces the 1000M network port to be linked down all the time. | From | Florian Fainelli <> |
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On 2/17/23 00:06, Wang, Xiaolei wrote: > hi > > When I use the nxp-imx7 board, eth0 is connected to the PC, eth0 is > turned off the auto-negotiation mode, and the configuration is forced to > 10M, 100M, 1000M. When configured to force 1000M, > The link status of phy status reg(0x1) is always 0, and the chip of > phy is BCM54220, but I did not find the relevant datasheet on BCM > official website, does anyone have any suggestions or the datasheet of > BCM54220?
I don't have access to a system with a BCM54220 but can look at the datasheet, could you provide the full output of mii-diag in both cases? What do the PC report as far as link partner advertisement goes etc.?
You are using a twister pair cable to connect your two systems? -- Florian
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