Commit a5cbe5bd authored by oharboe's avatar oharboe
Browse files

comment about slow RTCK

git-svn-id: svn://svn.berlios.de/openocd/trunk@972 b42882b7-edfa-0310-969c-e2dbd0fdcd60
parent 113436df
......@@ -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. */
......
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