From a5cbe5bd85aad2341f62d7fcdb7691da290b0a38 Mon Sep 17 00:00:00 2001 From: oharboe Date: Wed, 27 Aug 2008 06:05:27 +0000 Subject: comment about slow RTCK git-svn-id: svn://svn.berlios.de/openocd/trunk@972 b42882b7-edfa-0310-969c-e2dbd0fdcd60 --- src/jtag/jtag.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/src/jtag/jtag.h b/src/jtag/jtag.h index 347777e4..7fdcd7bd 100644 --- a/src/jtag/jtag.h +++ b/src/jtag/jtag.h @@ -199,7 +199,13 @@ typedef struct jtag_interface_s int (*init)(void); int (*quit)(void); /* returns JTAG maxium speed for KHz. 0=RTCK. The function returns - a failure if it can't support the KHz/RTCK. */ + a failure if it can't support the KHz/RTCK. + + WARNING!!!! if RTCK is *slow* then think carefully about + whether you actually want to support this in the driver. + Many target scripts are written to handle the absence of RTCK + and use a fallback kHz TCK. + */ int (*khz)(int khz, int *jtag_speed); /* returns the KHz for the provided JTAG speed. 0=RTCK. The function returns a failure if it can't support the KHz/RTCK. */ -- cgit v1.2.3