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-rw-r--r--src/jtag/ft2232.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/src/jtag/ft2232.c b/src/jtag/ft2232.c
index f5453a30..0b2e79c9 100644
--- a/src/jtag/ft2232.c
+++ b/src/jtag/ft2232.c
@@ -287,11 +287,12 @@ int ft2232_khz(int khz, int *jtag_speed)
* of 10 for better rounding later.
*/
- /* Calc speed, (6000 / khz) - 1 */
+ /* Calc speed, (6000 / khz) - 1 */
+ /* Use 65000 for better rounding */
*jtag_speed = (60000 / khz) - 10;
- /* Add 0.5 for rounding */
- *jtag_speed += 5;
+ /* Add 0.9 for rounding */
+ *jtag_speed += 9;
/* Calc real speed */
*jtag_speed = *jtag_speed / 10;