I have verified your provide dmesg printout and could not seen this problem.
But in your Dev-tree I miss altr,f2h_ptp_ref_clk = "true".
Also I miss 100 Mhz Clock in your dev-tree, but I think the first point (f2h_ptp_ref_clk = "true") is more important.
For comparing see my following dev-tree cutting:
status = "okay";
compatible = "synopsys,dwmac-16.1", "altr,socfpga-stmmac", "snps,dwmac-3.70a", "snps,dwmac";
altr,f2h_ptp_ref_clk = "true";
phy-handle = <&phy0>;
phy-mode = "rgmii";
//phy-addr = <0xffffffff>;
clocks = <&emac_0_clk &clk_125MHz>;
clock-names = "stmmaceth", "ptp_ref";
...
...
....
clocks {
...
clk_125MHz: clk_125MHz {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <125000000>; /* 125.00 MHz */
clock-output-names = "clk_125MHz-clk";
}; //end clk_125MHz (clk_125MHz)
Thanks
Mario
Von: "Zuckerbrod, Daniel" <dzuckerb...@textronsystems.com>
An: "Mario Molitor" <mario_moli...@web.de>
Cc: "linuxptp-users@lists.sourceforge.net" <linuxptp-users@lists.sourceforge.net>
Betreff: RE: Re: [Linuxptp-users] Stratix 10 & PTP
Hi Mario,
Attached are my 4.14.73-ltsi dmesg output and DTS. Please let me know if you think this patch will help with the issue I am seeing.
Thanks,
Daniel
From: Mario Molitor <mario_moli...@web.de>
Sent: Wednesday, August 19, 2020 6:01 PM
To: Zuckerbrod, Daniel <dzuckerb...@textronsystems.com>
Cc: linuxptp-users@lists.sourceforge.net
Subject: Aw: Re: [Linuxptp-users] Stratix 10 & PTP
Hello Daniel,
yes, i have running the PTP on Cyclone V and Linux 4.14.71. It was the attached patch necessary. I think you should see in dmesg a hint in the case that patch is necessary.
I think your problem is more a wrong setting in your Dev-Tree or wrong connection in fpga. Could you please send me your Dev-Tree and your dmesg printout for verify this?
Best regards,
Mario
Gesendet: Mittwoch, 19. August 2020 um 04:25 Uhr
Von: "Zuckerbrod, Daniel" <dzuckerb...@textronsystems.com>
An: "linuxptp-users@lists.sourceforge.net" <linuxptp-users@lists.sourceforge.net>
Betreff: Re: [Linuxptp-users] Stratix 10 & PTP
I have tried to move to Linux Kernel 5.7.0 (intel-socfpga) and ran into the same issues. Does anyone have a working PTP implementation in an Intel FPGA?
From: Zuckerbrod, Daniel
Sent: Monday, August 10, 2020 9:27 AM
To: linuxptp-users@lists.sourceforge.net
Subject: Stratix 10 & PTP
I am using an Intel/Altera Stratix 10 and would like to use the ARM HPS EMAC PTP interface. I am providing a 100 MHz to the s10_hps_emac_ptp_ref_clock_clk with plans to use the PTP timestamp in the FPGA fabric. I can see the timestamp serially shift out of the ARM as expected.
However, no matter what I change in the device tree I seem to always have issues using hardware timestamping (./ptp4l -m -s -i eth1 -H).
Software timestamping always works without issue (./ptp4l -m -s -i eth1 -S).
I am not sure what the “freq” column means, but it always says -62500000:
ptp4l[276.189]: master offset -29715517212917536 s0 freq -62500000 path delay 35700952
ptp4l[277.189]: clockcheck: clock jumped backward or running slower than expected!
I am using Linux Kernel version 4.14.73
Any help would be appreciated.
Thanks,
Daniel
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