1 # SPDX-License-Identifier: GPL-2.0-or-later
5 # https://github.com/blinkinlabs/jtag_hat
8 adapter driver bcm2835gpio
10 bcm2835gpio peripheral_base 0x3F000000
12 # Transition delay calculation: SPEED_COEFF/khz - SPEED_OFFSET
13 # These depend on system clock, calibrated for stock 700MHz
14 # bcm2835gpio_speed SPEED_COEFF SPEED_OFFSET
15 bcm2835gpio speed_coeffs 146203 36
17 # Each of the JTAG lines need a gpio number set: tck tms tdi tdo
18 # Header pin numbers: 23 22 19 21
19 adapter gpio tck -chip 0 11
20 adapter gpio tms -chip 0 25
21 adapter gpio tdi -chip 0 10
22 adapter gpio tdo -chip 0 9
24 # Each of the SWD lines need a gpio number set: swclk swdio
25 # Header pin numbers: 23 22
26 adapter gpio swclk -chip 0 11
27 adapter gpio swdio -chip 0 25
29 # Direction pin for SWDIO level shifting buffer
30 adapter gpio swdio_dir -chip 0 6
32 # If you define trst or srst, use appropriate reset_config
33 # Header pin numbers: TRST - 26, SRST - 18
35 adapter gpio trst -chip 0 7
36 #reset_config trst_only
38 adapter gpio srst -chip 0 24
39 #reset_config srst_only
41 # or if you have both connected
42 #reset_config trst_and_srst