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0dd969d83b
Use the new "adapter gpio" commands to configure the GPIOs used by the bcm2835gpio driver. The driver supports only 1 chip (gpiochip0). The reset function now honours the srst_open_drain and trst_open_drain options. Signed-off-by: Steve Marple <stevemarple@googlemail.com> Change-Id: I5b6c68b16362000cf5141a83394549d2bf3af108 Reviewed-on: https://review.openocd.org/c/openocd/+/7123 Tested-by: jenkins Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
45 lines
1.2 KiB
INI
45 lines
1.2 KiB
INI
# SPDX-License-Identifier: GPL-2.0-or-later
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#
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# Config for using Raspberry Pi's expansion header
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#
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# This is best used with a fast enough buffer but also
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# is suitable for direct connection if the target voltage
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# matches RPi's 3.3V and the cable is short enough.
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#
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# Do not forget the GND connection, pin 6 of the expansion header.
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#
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adapter driver bcm2835gpio
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bcm2835gpio peripheral_base 0x3F000000
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# Transition delay calculation: SPEED_COEFF/khz - SPEED_OFFSET
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# These depend on system clock, calibrated for stock 700MHz
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# bcm2835gpio speed SPEED_COEFF SPEED_OFFSET
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bcm2835gpio speed_coeffs 146203 36
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# Each of the JTAG lines need a gpio number set: tck tms tdi tdo
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# Header pin numbers: 23 22 19 21
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adapter gpio tck -chip 0 11
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adapter gpio tms -chip 0 25
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adapter gpio tdi -chip 0 10
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adapter gpio tdo -chip 0 9
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# Each of the SWD lines need a gpio number set: swclk swdio
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# Header pin numbers: 23 22
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adapter gpio swclk -chip 0 11
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adapter gpio swdio -chip 0 25
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# If you define trst or srst, use appropriate reset_config
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# Header pin numbers: TRST - 26, SRST - 18
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# adapter gpio trst -chip 0 7
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# reset_config trst_only
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# adapter gpio srst -chip 0 24
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# reset_config srst_only srst_push_pull
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# or if you have both connected,
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# reset_config trst_and_srst srst_push_pull
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