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-rw-r--r--src/jtag/jtag.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/jtag/jtag.h b/src/jtag/jtag.h
index d8092ca7..ef622031 100644
--- a/src/jtag/jtag.h
+++ b/src/jtag/jtag.h
@@ -316,6 +316,9 @@ extern int interface_jtag_add_pathmove(int num_states, enum tap_state *path);
/* go to TAP_RTI, if we're not already there and cycle
* precisely num_cycles in the TAP_RTI after which move
* to the end state, if it is != TAP_RTI
+ *
+ * nb! num_cycles can be 0, in which case the fn will navigate
+ * to endstate via TAP_RTI
*/
extern void jtag_add_runtest(int num_cycles, enum tap_state endstate);
extern int interface_jtag_add_runtest(int num_cycles, enum tap_state endstate);