From b9300a8d74897b4ca033d201f1a4721f407d313a Mon Sep 17 00:00:00 2001
From: Tobi-Alonso <tobi.alonso@gmail.com>
Date: Thu, 3 Dec 2020 17:49:53 +0000
Subject: [PATCH] Set vivado DWC input width explicitly as by default a block
will have a 1 byte input which probably will cause a bottleneck (#254)
---
.../fpgadataflow/streamingdatawidthconverter_batch.py | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/src/finn/custom_op/fpgadataflow/streamingdatawidthconverter_batch.py b/src/finn/custom_op/fpgadataflow/streamingdatawidthconverter_batch.py
index 16ec65878..27e293620 100644
--- a/src/finn/custom_op/fpgadataflow/streamingdatawidthconverter_batch.py
+++ b/src/finn/custom_op/fpgadataflow/streamingdatawidthconverter_batch.py
@@ -408,9 +408,14 @@ class StreamingDataWidthConverter_Batch(HLSCustomOp):
)
cmd.append(
"set_property -dict "
- "[list CONFIG.S_TDATA_NUM_BYTES.VALUE_SRC PROPAGATED] "
+ "[list CONFIG.S_TDATA_NUM_BYTES.VALUE_SRC USER] "
"[get_bd_cells /%s/dwc]" % node_name
)
+ cmd.append(
+ "set_property -dict "
+ "[list CONFIG.S_TDATA_NUM_BYTES {%d}] [get_bd_cells /%s/dwc]"
+ % (np.ceil(self.get_instream_width() / 8), node_name)
+ )
cmd.append(
"set_property -dict "
"[list CONFIG.M_TDATA_NUM_BYTES {%d}] [get_bd_cells /%s/dwc]"
--
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