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
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-linaro-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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