SJA1105 DESTPORTS sometimes reads 0 with devices attached. MAC addresses look fine.

[mullenr1a]

We're developing a driver for the SJA1105. The DESTPORTS sometimes reads 0 with devices attached. Most of the time DESTPORTS reads correctly. The MAC addresses look fine.

Just wanted to ask if there's a scenario for DESTPORTS being = 0 when a device is attached that we are talking to?

Thanks,

-Rich

[Pavel]

See the following documents about installing and using this tool:

https://github.com/openil/sja1105-tool

https://community.nxp.com/pwmxy87654/attachments/pwmxy87654/other/8508/1/SJA1105-Tool%20User%20Guide...

https://www.kernel.org/doc/html/latest/networking/dsa/sja1105.html