One clock knob across probes instead of per-driver names:
- jtag_open mirrors JTAG_TCK_FREQ_KHZ into PROBE_FTDI_TCK_FREQ_KHZ for
the Viveris FTDI driver (read-only at init); unset leaves the existing
value untouched
- the Digilent driver reads JTAG_TCK_FREQ_KHZ directly instead of
hardcoding 4 MHz (falls back to 4 MHz when unset)
- documented in probes.yaml; CLAUDE.md design note marks phase A done
FTDI path validated on the IGLOO2/FlashPro (250 kHz, mirror confirmed);
Digilent path not hardware-tested.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
François
3aad5e2308