commit 5fd3b46c2fbd9c8310f3f23da2a950eb9a003c3f
author Maciej Kurc <mkurc@antmicro.com> Fri Jun 24 15:26:24 2022 +0200
committer Maciej Kurc <mkurc@antmicro.com> Fri Jun 24 15:26:24 2022 +0200
tree 911e6cc80241d329f1e5f5ee06f12c9850e97e65
parent ff19603e1df7329ea75828b8353e5a759ad693dd

Preserve clock for DSP in any of multiply-accumulate modes

Signed-off-by: Maciej Kurc <mkurc@antmicro.com>

ql-qlf-plugin/ql-dsp-io-regs.cc

diff --git a/ql-qlf-plugin/ql-dsp-io-regs.cc b/ql-qlf-plugin/ql-dsp-io-regs.cc
index 9f24594..7161203 100644
--- a/ql-qlf-plugin/ql-dsp-io-regs.cc
+++ b/ql-qlf-plugin/ql-dsp-io-regs.cc
@@ -66,7 +66,7 @@
             dsp->type = RTLIL::IdString(new_type);
 
             // Delete ports unused in given type of DSP cell
-            del_clk = (!reg_in_i && out_sel_i <= 3);
+            del_clk = (!reg_in_i && out_sel_i <= 3 && out_sel_i != 1);
 
             std::vector<std::string> ports2del;