You passed in first round, then partner reversed in balancing seat, what kind hand did he get, and your action?
At table, i thought his most likely shape was 5♦s+6♣s, then we only needed him holding ♦K and ♣AK to make 5, so i jumped to 5♦. Was my thinking correct?

Help

1♣-(1♥)-ps-(ps)
2♦-(ps)-?