According to PD sepc, it looks like AMA (alternate mode adapter) vdo is needed for ufp_d operation but it is missing.
It goes up to DP CONFIGURE step and it sends ACK packet but it is discarded by DFP_D device for some reason.
When I compared its PD packets to other UFP_D devices packet, the only difference is missing AMA vdo.
Can you give me some guide?
