On 04.04.19 11:24, Josef Holzmayr wrote:
On Thu, Apr 04, 2019 at 10:40:13AM +0200, Jan Kiszka via Xenomai wrote:
On 04.04.19 10:31, Philippe Gerum via Xenomai wrote:
On 4/3/19 7:16 PM, Philippe Gerum wrote:
On 4/3/19 9:55 AM, Pierre FICHEUX via Xenomai wrote:
Hi,
Xenomai kernel (-xenomai branches) is available for BBB (AM335x) from
https://github.com/beagleboard/linux for some kernel releases (4.4, 4.9,
4.14). I've tried 4.9 and 4.14 but jitter is very bad with latency tool (>
200 µs).
According to Xenomai wiki, AM335x SoC is supported for "vendor branch",
hope this is the same thing (?)
Dos anybody use AM335x with success? I did it a long time ago with Xenomai
2 and 3.8.13 kernel.
CONFIG_ARM_CPUIDLE hurts badly on this platform, disabling it restores
proper latency figures.
A quick port of the latest I-pipe code ported to the bbb kernel 4.14 can
be pulled from this URL (lightly tested):
https://lab.xenomai.org/ipipe-rpm.git/log/?h=arm/4.14.110-bbb
too much haste: clone from [1], branch arm/4.14.108-bbb, which is based
on the 4.14 branch of the Beagleboard tree (as of yesterday).
[1] git://lab.xenomai.org/ipipe-rpm.git
Does the BBB really still need a vendor kernel? Definitely not for booting
and core functionality.
Jan
It should already do pretty fine with 4.4-cip, as thats what I'm doing
my tests on.
Thanks, good to know.
BTW, if you have time to test the current ipipe-4.4.y[-cip] branches, I would
also tag ARM stable releases for them.
Jan
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Corporate Competence Center Embedded Linux
