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- # SPDX-License-Identifier: GPL-2.0-or-later
- #
- # Config for Raspberry Pi GPIO header
- #
- # This is best used with a fast enough buffer but also
- # is suitable for direct connection if the target voltage
- # matches RPi's 3.3V and the cable is short enough.
- #
- # Do not forget the GND connection, e.g. pin 20 of the GPIO header.
- #
- # GPIO 25 (pin 22) previously used for TMS/SWDIO is pulled-down by default.
- # The JTAG/SWD specification requires pull-up at the target board
- # for either signal. Connecting the signal pulled-up on the target
- # to the pull-down on the adapter is not a good idea.
- # GPIO 8 is pulled-up by default.
- echo "Warn : TMS/SWDIO moved to GPIO 8 (pin 24). Check the wiring please!"
- # Each of the JTAG lines need a gpio number set: tck tms tdi tdo
- # Header pin numbers: 23 24 19 21
- adapter gpio tck -chip 0 11
- adapter gpio tms -chip 0 8
- adapter gpio tdi -chip 0 10
- adapter gpio tdo -chip 0 9
- # Each of the SWD lines need a gpio number set: swclk swdio
- # Header pin numbers: 23 24
- adapter gpio swclk -chip 0 11
- adapter gpio swdio -chip 0 8
- # If you define trst or srst, use appropriate reset_config
- # Header pin numbers: TRST - 26, SRST - 18
- # adapter gpio trst -chip 0 7
- # reset_config trst_only
- # adapter gpio srst -chip 0 24
- # reset_config srst_only srst_push_pull
- # or if you have both connected,
- # reset_config trst_and_srst srst_push_pull
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