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AR# 65803

LogiCORE IP Digital Pre-Distortion v7.0/v7.1 - The global timer used by DPD v7.0/v7.1 software can cause Linux (running on CPU0 in AMP configuration) to lock up when accessing the global timer


In AMP configuration on a Zynq Processing System, when DPD v7.0/v7.1 is used on CPU1, it enables global timers.

During this enable sequence, the global timer gets reset automatically.

This can interfere with Linux and cause it to lock up (on CPU0) when it also needs to access global timers.


This is a known issue with the Digital Pre-Distortion (DPD) core.

The recommendation is to use the latest DPD files from the DPD lounge, where the issue is fixed.


Refer to (Xilinx Answer 66684) for the DPD IP version which includes the fix.

The DPD version used in (Xilinx Answer 65803) includes the fix for the issue.

Linked Answer Records

Master Answer Records

AR# 65803
Date Created 10/28/2015
Last Updated 02/26/2016
Status Active
Type General Article
  • Zynq-7000
  • Vivado Design Suite - 2014.4
  • Vivado Design Suite - 2015.2
  • Digital Pre-Distortion (DPD)