Latmus is a backport from EVL to Cobalt, the procedure is fully
described here: https://evlproject.org/core/benchmarks/
I verified all functions of latmus on hardware environment under which
Rock PI X board connect GPIOs with FRDM K64F.But actually Rock PI X V1.4
board's GPIO I/O voltage is 1.8V does not match 3.3V of FRDM K64F board.
Even though I tried to set up IO shifter board to bridge two boards,
still can not get correct latecny data because of bad IO signal. So I
have to work around to loopback Input/Output GPIOs on both boards to do
verify functions.
Hardware setup:
---------------------------------------------------
eth| |eth
+ +
FRDM K64F board Rock PI X board
| | | |
+_________+ +___________+
GPIO Loopback GPIO Loopback
hongzha1 (3):
rtdm/testing: latmus: introduce latmus driver
drivers/gpio: core: introduce helper to find gpiochip
testsuite/latmus: introduce latmus benchmark
configure.ac | 1 +
include/cobalt/kernel/rtdm/gpio.h | 3 +
include/rtdm/uapi/testing.h | 79 ++
kernel/drivers/gpio/gpio-core.c | 23 +
kernel/drivers/testing/Kconfig | 10 +
kernel/drivers/testing/Makefile | 1 +
kernel/drivers/testing/latmus.c | 1237 ++++++++++++++++++++++++
testsuite/Makefile.am | 4 +-
testsuite/latmus/Makefile.am | 18 +
testsuite/latmus/latmus.c | 1446 +++++++++++++++++++++++++++++
10 files changed, 2821 insertions(+), 1 deletion(-)
create mode 100644 kernel/drivers/testing/latmus.c
create mode 100644 testsuite/latmus/Makefile.am
create mode 100644 testsuite/latmus/latmus.c
--
2.17.1
