tcl/interface/beaglebone-jtag-native.cfg

   1 # SPDX-License-Identifier: GPL-2.0-or-later
   2 # BeagleBone native GPIO interface for JTAG
   3 #
   4 # This is best used with a fast buffer but it is also suitable for a direct
   5 # connection if the target voltage matches the host's IO voltage (typically
   6 # 3.3V) and the cable is short.
   7 #
   8 # DO NOT APPLY VOLTAGE TO THE GPIO PINS UNTIL SYS_RESETN IS HIGH.
   9 #
  10 # Do not forget the GND connection.
  11
  12 adapter driver am335xgpio
  13
  14 # Transition delay calculation: SPEED_COEFF/khz - SPEED_OFFSET
  15 # These depend on the system clock, calibrated for stock 1 GHz BeagleBoneBlack
  16 # am335xgpio speed SPEED_COEFF SPEED_OFFSET
  17 am335xgpio speed_coeffs 600000 575
  18
  19 # BeagleBone pin P9_41
  20 adapter gpio tdo 20 -chip 0
  21
  22 # BeagleBone pin P9_12
  23 adapter gpio tdi 28 -chip 1
  24
  25 # BeagleBone pin P9_18
  26 adapter gpio tms 4 -chip 0
  27
  28 # BeagleBone pin P9_22
  29 adapter gpio tck 2 -chip 0
  30
  31 # BeagleBone pin P9_16
  32 adapter gpio led 19 -chip 1
  33
  34 # BeagleBone pin P8_18
  35 adapter gpio srst 1 -chip 2
  36 reset_config srst_only srst_push_pull