Ian,
Thanks for the response. I am using the HPS EMAC, not the TSE
MAC.although there is no reason I can't use the TSE MAC really. My kernel
version is the 4.1.22-ltsi-altera (Angstrom v2015.12 built with Yocto).
What accuracy have you been able to achieve using the TSE MAC? Are you
using SW timestamping only?
John L.
From: Ian Thompson [mailto:ian.thomp...@pgs.com]
Sent: Wednesday, May 17, 2017 9:39 AM
To: John Lemonovich <john.lemonov...@foresys.com>;
linuxptp-users@lists.sourceforge.net
Subject: RE: Adding LinuxPTP to Arria 10 SoC
John
We are running ptp4l on a Cyclone V SoC through the stmicro mac. Are you
using that or the Altera triple-speed mac? The stmmac driver has a few
quirks with Kernel 3.18 but things improve with later kernels >4.8.
The driver doesn't use the correct system call for setting initial timings
and ptp4l will do a re-initialize on certain fault conditions. We see
missing delay request responses under heavy traffic loads and then will
get a "glitch" in ptp times.
Unfortunately, we can't move to the later kernels, as we don't believe
the PCIe root port is configured correctly with 4.x kernels, which we need
to work.
Good Luck
Ian T.
From: John Lemonovich [mailto:john.lemonov...@foresys.com]
Sent: Tuesday, May 16, 2017 10:44 AM
To: linuxptp-users@lists.sourceforge.net
<mailto:linuxptp-users@lists.sourceforge.net>
Subject: [External] [Linuxptp-users] Adding LinuxPTP to Arria 10 SoC
Hello,
I am trying to add ptp support into my Altera Arria 10 SoC dev kit
(Cortex-A9). Eventually I would like to use a 10G MAC with SGDMAs and SFP
port, but for now I am trying to get it working using the ARM HPS Gb-EMAC
and Micrel KSZ9031RN triple speed PHY .
I have built Linux both using Yocto and also my own build from Altera's
LTSI kernel and Buildroot/Busybox for filesystem. My question is how to
add LinuxPTP to my embedded Linux and add driver bindings to the MAC, etc.
so that I can run as an OC slave? I have downloaded the LinuxPTP source,
and set my:
ARCH=arm
CROSS_COMPILE=CROSS_COMPILE=/localcad/skyfather/ArriaX/ltsi_4_1_33/gcc-lin
aro-5.4.1-2017.01-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-
And then I ran: make install which put the output files into
usr/local/sbin and usr/local/man/man8
Can I just copy those directories to my embedded Linux FS and run them?
BTW -
When I run ethtool -T eth0 to check capabilities I get:
Time stamping parameters for eth0:
Capabilities:
hardware-transmit (SOF_TIMESTAMPING_TX_HARDWARE)
software-transmit (SOF_TIMESTAMPING_TX_SOFTWARE)
hardware-receive (SOF_TIMESTAMPING_RX_HARDWARE)
software-receive (SOF_TIMESTAMPING_RX_SOFTWARE)
software-system-clock (SOF_TIMESTAMPING_SOFTWARE)
hardware-raw-clock (SOF_TIMESTAMPING_RAW_HARDWARE)
PTP Hardware Clock: 0
Hardware Transmit Timestamp Modes:
off (HWTSTAMP_TX_OFF)
on (HWTSTAMP_TX_ON)
Hardware Receive Filter Modes:
none (HWTSTAMP_FILTER_NONE)
all (HWTSTAMP_FILTER_ALL)
ptpv1-l4-event (HWTSTAMP_FILTER_PTP_V1_L4_EVENT)
ptpv1-l4-sync (HWTSTAMP_FILTER_PTP_V1_L4_SYNC)
ptpv1-l4-delay-req (HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ)
ptpv2-l4-event (HWTSTAMP_FILTER_PTP_V2_L4_EVENT)
ptpv2-l4-sync (HWTSTAMP_FILTER_PTP_V2_L4_SYNC)
ptpv2-l4-delay-req (HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ)
ptpv2-event (HWTSTAMP_FILTER_PTP_V2_EVENT)
ptpv2-sync (HWTSTAMP_FILTER_PTP_V2_SYNC)
ptpv2-delay-req (HWTSTAMP_FILTER_PTP_V2_DELAY_REQ)
root@arria10:/#
Thank you,
John
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