On 7/21/26 9:02 PM, Esteban Urrutia wrote:
> This does not seem to be the case...
> When HBR2 is used over a direct Type-C to Type-C DP Alt Mode connection,
> link training fails when v1.1 tables are used instead:
Expanding on what I said in my previous email, here is what happens when
certain tables are used.
- v1 DP serdes, v1 RBR/HBR/HBR2/HBR3: works
- v1 DP serdes, v1.1 RBR/HBR/HBR2/HBR3: doesn't work
- v1.1 DP serdes, v1 RBR/HBR/HBR2/HBR3: works
- v1.1 DP serdes, v1.1 RBR/HBR/HBR2/HBR3: doesn't work
The third case is interesting. I'm inclined to believe it works because
the only difference between v1 and v1.1 DP serdes tables is the value
written to the BG_TIMER offset.
Regards,
Esteban
