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AR# 67433

LogiCORE DisplayPort Receiver v7.0 (Rev. 1) - XAPP1178 - XAPP1271 - Why does the DisplayPort RX driver for the DisplayPort IP and DisplayPort subsystem sometimes fail to train when using DP159 production silicon?

Description

Why does the DisplayPort Receiver driver for the DisplayPort IP and DisplayPort subsystem sometimes fail to train when using DP159 production silicon?

Solution

This is a known issue that is due to a change in the IIC interface on the Texas Instruments DP159 part. The problem is that the response times are slightly longer and the DP159 part fails to complete configuration.

  • 2016.1 - Users can download the AXI IIC v3.2 Software Driver patch from (Xilinx Answer 67400) to work around this issue until this is fully resolved with an updated IIC driver in the 2016.3 release.
  • 2016.2 - Users can download the AXI IIC v3.2 Software Driver patch from (Xilinx Answer 67400) to work around this issue until this is fully resolved with an updated IIC driver in the 2016.3 release.
  • 2016.3 - Users can should delete the 2016.2 IIC v3.2 Software Driver patch and update to the IIC v3.3 or later driver in Vivado 2016.3 and later.

Note:

XAPP1178:

To apply the AXI IIC v3.2 Software Driver patch to XAPP1178, you should extract it to the xapp11178/repos/sw_repo directory before running the SDK project building script all.tcl. This is documented on page 26 of XAPP1178 v3.0.

XAPP1272:

To apply the AXI IIC v3.2 Software Driver patch to XAPP1271, you should extract it to the xapp1271/repos/sw directory before running the SDK project building script all.tcl. This is documented on page 16 of XAPP1271 v1.0.

Linked Answer Records

Master Answer Records

Answer Number Answer Title Version Found Version Resolved
65447 DisplayPort RX Subsystem - Release Notes and Known Issues for Vivado 2013.1 and newer tool versions N/A N/A

Associated Answer Records

Answer Number Answer Title Version Found Version Resolved
67400 AXI IIC Software Driver v3.2 - AXI IIC Software Driver v3.2 Patch Download N/A N/A
AR# 67433
Date Created 06/22/2016
Last Updated 08/31/2016
Status Active
Type General Article
IP
  • DisplayPort