diff --git a/verilog/rtl/qspim b/verilog/rtl/qspim
new file mode 160000
index 0000000..644fc5e
--- /dev/null
+++ b/verilog/rtl/qspim
@@ -0,0 +1 @@
+Subproject commit 644fc5e86bf08279ed257519456199e85d9584f9
diff --git a/verilog/rtl/yifive/ycr1c b/verilog/rtl/yifive/ycr1c
new file mode 160000
index 0000000..defc5ce
--- /dev/null
+++ b/verilog/rtl/yifive/ycr1c
@@ -0,0 +1 @@
+Subproject commit defc5ce7ce231aa0c5944a897a0144f9613944be