Add comment for parameter

diff --git a/isp_commands.c b/isp_commands.c
index c468b1c..88ada52 100644 (file)
--- a/isp_commands.c
+++ b/isp_commands.c
@@ -97,6 +97,7 @@ static int isp_ret_code(char* buf, char** endptr, int quiet)
 
 
 /* Connect or reconnect to the target.
+ * crystal_freq is in KHz
  * Return positive or NULL value when connection is OK, or negative value otherwise.
  */
 int isp_connect(unsigned int crystal_freq, int quiet)