diff --git a/src/jtag/interface.h b/src/jtag/interface.h
index f4c6a98ba..39d2d9d88 100644
--- a/src/jtag/interface.h
+++ b/src/jtag/interface.h
@@ -250,6 +250,8 @@ struct adapter_driver {
 
 	/**
 	 * Control (assert/deassert) the signals SRST and TRST on the interface.
+	 * This function is synchronous and should be called after the adapter
+	 * queue has been properly flushed.
 	 * This function is optional.
 	 * Adapters that don't support resets can either not define this function
 	 * or return an error code.