ZHCSS38 july 2020 TSB82AF15-EP
PRODUCTION DATA
The system will hang or the device will drop when L1 is enabled. The link will successfully enter L1, but when the root complex requests to exit L1 the TSB82AF15 is unresponsive. This is seen during prolonged file transfers. The following is observed:
1. Endpoint requests to go into L1
2. Root complex acknowledges the L1 request
3. Link goes into L1
4. Some unknown packet types are sent from the endpoint
5. Root complex wants to exit L1 and sends TS1 (not due to the unknown packet types sent from endpoint)
6. There is no response from endpoint
7. After some time, root complex tries to retrain the link but still no response from endpoint
8. Root complex goes into Link State Poll_Compliance