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drivers/bcm2835gpio: Migrate to adapter gpio commands

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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>
This commit is contained in:
Steve Marple
2022-06-25 23:45:18 +01:00
committed by Antonio Borneo
parent e643a494d4
commit 0dd969d83b
7 changed files with 460 additions and 457 deletions
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58
doc/openocd.texi
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@@ -3292,66 +3292,12 @@ able to coexist nicely with both sysfs bitbanging and various
peripherals' kernel drivers. The driver restores the previous
configuration on exit.
GPIO numbers >= 32 can't be used for performance reasons.
GPIO numbers >= 32 can't be used for performance reasons. GPIO configuration is
handled by the generic command @ref{adapter gpio, @command{adapter gpio}}.
See @file{interface/raspberrypi-native.cfg} for a sample config and
pinout.
@deffn {Config Command} {bcm2835gpio jtag_nums} @var{tck} @var{tms} @var{tdi} @var{tdo}
Set JTAG transport GPIO numbers for TCK, TMS, TDI, and TDO (in that order).
Must be specified to enable JTAG transport. These pins can also be specified
individually.
@end deffn
@deffn {Config Command} {bcm2835gpio tck_num} @var{tck}
Set TCK GPIO number. Must be specified to enable JTAG transport. Can also be
specified using the configuration command @command{bcm2835gpio jtag_nums}.
@end deffn
@deffn {Config Command} {bcm2835gpio tms_num} @var{tms}
Set TMS GPIO number. Must be specified to enable JTAG transport. Can also be
specified using the configuration command @command{bcm2835gpio jtag_nums}.
@end deffn
@deffn {Config Command} {bcm2835gpio tdo_num} @var{tdo}
Set TDO GPIO number. Must be specified to enable JTAG transport. Can also be
specified using the configuration command @command{bcm2835gpio jtag_nums}.
@end deffn
@deffn {Config Command} {bcm2835gpio tdi_num} @var{tdi}
Set TDI GPIO number. Must be specified to enable JTAG transport. Can also be
specified using the configuration command @command{bcm2835gpio jtag_nums}.
@end deffn
@deffn {Config Command} {bcm2835gpio swd_nums} @var{swclk} @var{swdio}
Set SWD transport GPIO numbers for SWCLK and SWDIO (in that order). Must be
specified to enable SWD transport. These pins can also be specified individually.
@end deffn
@deffn {Config Command} {bcm2835gpio swclk_num} @var{swclk}
Set SWCLK GPIO number. Must be specified to enable SWD transport. Can also be
specified using the configuration command @command{bcm2835gpio swd_nums}.
@end deffn
@deffn {Config Command} {bcm2835gpio swdio_num} @var{swdio}
Set SWDIO GPIO number. Must be specified to enable SWD transport. Can also be
specified using the configuration command @command{bcm2835gpio swd_nums}.
@end deffn
@deffn {Config Command} {bcm2835gpio swdio_dir_num} @var{swdio} @var{dir}
Set SWDIO direction control pin GPIO number. If specified, this pin can be used
to control the direction of an external buffer on the SWDIO pin (set=output
mode, clear=input mode). If not specified, this feature is disabled.
@end deffn
@deffn {Config Command} {bcm2835gpio srst_num} @var{srst}
Set SRST GPIO number. Must be specified to enable SRST.
@end deffn
@deffn {Config Command} {bcm2835gpio trst_num} @var{trst}
Set TRST GPIO number. Must be specified to enable TRST.
@end deffn
@deffn {Config Command} {bcm2835gpio speed_coeffs} @var{speed_coeff} @var{speed_offset}
Set SPEED_COEFF and SPEED_OFFSET for delay calculations. If unspecified,
speed_coeff defaults to 113714, and speed_offset defaults to 28.