From dbb10a57d128073cece9ccfc7edc7bb45b220406 Mon Sep 17 00:00:00 2001 From: Matthew Mets Date: Tue, 20 Jul 2021 01:48:47 +0200 Subject: [PATCH] interface/jtag_hat: Add interface configuration for the JTAG HAT This adds support for the Blinkinlabs JTAG Hat, a Raspberry Pi expansion board that provides JTAG and SWD connections via level- shifting buffers. Change-Id: I228bf6a18890b7c3d6679bbc63bfe39f726d8323 Signed-off-by: Matthew Mets Reviewed-on: http://openocd.zylin.com/6372 Reviewed-by: Antonio Borneo Tested-by: jenkins --- tcl/interface/jtag_hat_rpi2.cfg | 38 +++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 tcl/interface/jtag_hat_rpi2.cfg diff --git a/tcl/interface/jtag_hat_rpi2.cfg b/tcl/interface/jtag_hat_rpi2.cfg new file mode 100644 index 0000000000..495ff0f042 --- /dev/null +++ b/tcl/interface/jtag_hat_rpi2.cfg @@ -0,0 +1,38 @@ +# SPDX-License-Identifier: GPL-2.0-or-later +# +# Blinkinlabs JTAG_Hat +# +# https://github.com/blinkinlabs/jtag_hat +# + +adapter driver bcm2835gpio + +bcm2835gpio_peripheral_base 0x3F000000 + +# Transition delay calculation: SPEED_COEFF/khz - SPEED_OFFSET +# These depend on system clock, calibrated for stock 700MHz +# bcm2835gpio_speed SPEED_COEFF SPEED_OFFSET +bcm2835gpio_speed_coeffs 146203 36 + +# Each of the JTAG lines need a gpio number set: tck tms tdi tdo +# Header pin numbers: 23 22 19 21 +bcm2835gpio_jtag_nums 11 25 10 9 + +# Each of the SWD lines need a gpio number set: swclk swdio +# Header pin numbers: 23 22 +bcm2835gpio_swd_nums 11 25 + +# Direction pin for SWDIO level shifting buffer +bcm2835gpio_swdio_dir_num 6 + +# If you define trst or srst, use appropriate reset_config +# Header pin numbers: TRST - 26, SRST - 18 + +bcm2835gpio_trst_num 7 +#reset_config trst_only + +bcm2835gpio_srst_num 24 +#reset_config srst_only + +# or if you have both connected +#reset_config trst_and_srst -- 2.30.2