From 5b3d6d57e2dacbcc48b2725760cdb0753a39244d Mon Sep 17 00:00:00 2001
From: Florent Kermarrec <florent@enjoy-digital.fr>
Date: Tue, 6 Mar 2018 11:49:28 +0100
Subject: [PATCH] drtio/gth: power down rx on restart (seems to make link
 initialization reliable)

---
 artiq/gateware/drtio/transceiver/gth_ultrascale.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/artiq/gateware/drtio/transceiver/gth_ultrascale.py b/artiq/gateware/drtio/transceiver/gth_ultrascale.py
index 5c4fcbc25..baad1d557 100644
--- a/artiq/gateware/drtio/transceiver/gth_ultrascale.py
+++ b/artiq/gateware/drtio/transceiver/gth_ultrascale.py
@@ -531,8 +531,8 @@ class GTHSingle(Module):
             o_RXDATA=Cat(*[rxdata[10*i:10*i+8] for i in range(nwords)]),
 
             # RX electrical
-            i_RXPD=0b00,
-            i_RXELECIDLEMODE=0b11,
+            i_RXPD=Replicate(rx_init.restart, 2),
+			i_RXELECIDLEMODE=0b11,
 
             # Pads
             i_GTHRXP=pads.rxp,