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Why does HRESET_REQ# pin of P1011 always output low ?

Question asked by Yuanqiang Wang on Sep 9, 2015
Latest reply on Sep 14, 2015 by Yuanqiang Wang



    I am verifying a P1011 board which designed by myself. Now, u-boot run ok, uart, eTSEC, pcie all works. But I find that the HRESET_REQ# pin always output low after HRESET# deasserts. When HRESET# asserts, the HRESET_REQ# turns high. Only a 4.7K pull-up resistor connects this pin. Boot sequencer is disabled. Can you tell me what cause this situatuion ?