diff --git a/tcl/board/ek-lm3s3748.cfg b/tcl/board/ek-lm3s3748.cfg
index 7613a0ad2..4695c89e9 100644
--- a/tcl/board/ek-lm3s3748.cfg
+++ b/tcl/board/ek-lm3s3748.cfg
@@ -2,6 +2,7 @@
 #  http://www.luminarymicro.com/products/lm3s3748_usb_h_d_evaluation_kits.html
 
 # NOTE:  using the on-board FT2232 JTAG/SWD/SWO interface is optional!
+# so is using it in JTAG mode, as done here.
 source [find interface/luminary.cfg]
 
 source [find target/stellaris.cfg]
diff --git a/tcl/board/ek-lm3s811.cfg b/tcl/board/ek-lm3s811.cfg
index 66519f674..f036bc5e0 100644
--- a/tcl/board/ek-lm3s811.cfg
+++ b/tcl/board/ek-lm3s811.cfg
@@ -3,7 +3,8 @@
 #
 # http://www.luminarymicro.com/products/stellaris_811_evaluation_kits.html
 
-# include the FT2232 interface config for on-board JTAG interface
+# NOTE:  using the on-board FT2232 JTAG/SWD/SWO interface is optional!
+# so is using it in JTAG mode, as done here.
 # NOTE:  older '811-EK boards (before rev C) shouldn't use this.
 source [find interface/luminary.cfg]