From 331244ad31a508e5c12f9f38f55bd085fa3d906f Mon Sep 17 00:00:00 2001
From: Andrei-Liviu Simion <andrei.simion@xilinx.com>
Date: Tue, 13 Jan 2015 16:06:59 -0800
Subject: [PATCH] dp: dptx: Training should fail if clock recovery fails on
 maximum voltage swing.

Required for DisplayPort compliance.

Signed-off-by: Andrei-Liviu Simion <andrei.simion@xilinx.com>
---
 XilinxProcessorIPLib/drivers/dp/src/xdptx.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/XilinxProcessorIPLib/drivers/dp/src/xdptx.c b/XilinxProcessorIPLib/drivers/dp/src/xdptx.c
index 8421eace..f7b352b3 100644
--- a/XilinxProcessorIPLib/drivers/dp/src/xdptx.c
+++ b/XilinxProcessorIPLib/drivers/dp/src/xdptx.c
@@ -1565,6 +1565,9 @@ static XDptx_TrainingState XDptx_TrainingStateClockRecovery(XDptx *InstancePtr)
 		if (SameVsLevelCount >= 5) {
 			break;
 		}
+		if (LinkConfig->VsLevel == XDPTX_MAXIMUM_VS_LEVEL) {
+			break;
+		}
 
 		/* Adjust the drive settings as requested by the RX device. */
 		Status = XDptx_AdjVswingPreemp(InstancePtr);