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Diffstat (limited to 'doc/openocd.texi')
| -rw-r--r-- | doc/openocd.texi | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/doc/openocd.texi b/doc/openocd.texi index 9ea7edf8..51dab187 100644 --- a/doc/openocd.texi +++ b/doc/openocd.texi @@ -574,6 +574,9 @@ produced, PDF schematics are easily found and it is easy to make. @item @b{at91rm9200} @* Like the EP93xx - but an ATMEL AT91RM9200 based solution using the GPIO pins on the chip. +@item @b{bcm2835gpio} +@* A BCM2835-based board (e.g. Raspberry Pi) using the GPIO pins of the expansion header. + @end itemize @node About Jim-Tcl @@ -3048,6 +3051,22 @@ Turn power switch to target on/off. No arguments: print status. @end deffn +@deffn {Interface Driver} {bcm2835gpio} +This SoC is present in Raspberry Pi which is a cheap single-board computer +exposing some GPIOs on its expansion header. + +The driver accesses memory-mapped GPIO peripheral registers directly +for maximum performance, but the only possible race condition is for +the pins' modes/muxing (which is highly unlikely), so it should be +able to coexist nicely with both sysfs bitbanging and various +peripherals' kernel drivers. The driver restores the previous +configuration on exit. + +See @file{interface/raspberrypi-native.cfg} for a sample config and +pinout. + +@end deffn + @section Transport Configuration @cindex Transport As noted earlier, depending on the version of OpenOCD you use, |