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ace028262b
Use the new "adapter gpio" commands to configure the GPIOs used by the am335xgpio driver. The AM335x has 4 GPIO 'chips' (chip number 0-3 inclusive), with each one providing 32 GPIOs (gpio_num 0-31 inclusive). Change-Id: I7c63c0e4763657ea51790c43fc40d32b7c3580bb Signed-off-by: Steve Marple <stevemarple@googlemail.com> Reviewed-on: https://review.openocd.org/c/openocd/+/6984 Tested-by: jenkins Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
34 lines
922 B
INI
34 lines
922 B
INI
# SPDX-License-Identifier: GPL-2.0-or-later
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# BeagleBone native GPIO interface for SWD
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#
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# This is best used with a fast buffer but it is also suitable for a direct
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# connection if the target voltage matches the host's IO voltage (typically
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# 3.3V) and the cable is short.
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#
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# DO NOT APPLY VOLTAGE TO THE GPIO PINS UNTIL SYS_RESETN IS HIGH.
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#
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# Do not forget the GND connection.
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adapter driver am335xgpio
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# Transition delay calculation: SPEED_COEFF/khz - SPEED_OFFSET
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# These depend on the system clock, calibrated for stock 1 GHz BeagleBoneBlack
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# am335xgpio speed SPEED_COEFF SPEED_OFFSET
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am335xgpio speed_coeffs 600000 575
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# BeagleBone pin P9_22
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adapter gpio swclk 2 -chip 0
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# BeagleBone pin P9_18
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adapter gpio swdio 4 -chip 0
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# BeagleBone pin P9_12
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adapter gpio swdio_dir 28 -chip 1
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# USR0 LED
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adapter gpio led 21 -chip 1
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# BeagleBone pin P8_18
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adapter gpio srst 1 -chip 2
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reset_config srst_only srst_push_pull
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