From: Florent Kermarrec <florent@enjoy-digital.fr>
Date: Thu, 23 Nov 2017 16:41:35 +0000 (+0100)
Subject: soc/interconnect/stream: fix specific cases for last/first signal in UpConverter
X-Git-Tag: 24jan2021_ls180~1794
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=831b489fd3a545a4a2a3eb57b058b54249eda5cf;p=litex.git

soc/interconnect/stream: fix specific cases for last/first signal in UpConverter
---

diff --git a/litex/soc/interconnect/stream.py b/litex/soc/interconnect/stream.py
index bc6793ca..fea05b43 100644
--- a/litex/soc/interconnect/stream.py
+++ b/litex/soc/interconnect/stream.py
@@ -176,8 +176,13 @@ class _UpConverter(Module):
                 )
             ),
             If(source.valid & source.ready,
-                source.first.eq(sink.first),
-                source.last.eq(sink.last),
+                If(sink.valid & sink.ready,
+                    source.first.eq(sink.first),
+                    source.last.eq(sink.last)
+                ).Else(
+                    source.first.eq(0),
+                    source.last.eq(0)
+                )
             ).Elif(sink.valid & sink.ready,
                 source.first.eq(sink.first | source.first),
                 source.last.eq(sink.last | source.last)