The Freescale MX6 based Sabre boards are inexpensive and have good PTP
support now, don't they? IIRC, recently there was some changes made to
support the HW 1588 block in the MAC that allows the HW to drive a 1588
output pin correctly.
I have not tested this myself yet though but will be doing
On Wed, Jul 29, 2015 at 05:28:12PM +0200, Juan Solano wrote:
Oops! time to ditch the BBB then. I have written a PPS generator driver
through GPIO:
https://github.com/jsln/pps-gen-gpio
Right, so the jitter you are seeing is mostly due to latencies in the
OS. You can improve this a bit by
On Wed, Jul 29, 2015, at 04:40 PM, Richard Cochran wrote:
On Wed, Jul 29, 2015 at 02:46:34PM +0200, Juan Solano wrote:
I am learning about PTP and doing tests on 2 Beaglebone Blacks running a
recent stable linux (v3.18.16) with disabled dynamic ticks. They support
hardware timestamping
There's a sabre lite kit that's $199:
http://boundarydevices.com/product/sabre-lite-imx6-sbc/
I understand your reservations, I've been following the commits to the
driver and see . I also know that with the 1588 output, the pulse is
only 8ns which is not sufficient for some parts.
Soon
On Wed, Jul 29, 2015 at 10:08:47AM -0700, Chris Healy wrote:
The Freescale MX6 based Sabre boards are inexpensive and have good PTP
support now, don't they? IIRC, recently there was some changes made to
support the HW 1588 block in the MAC that allows the HW to drive a 1588
output pin
We implemented PPS output signal through AM335x Dual-Mode Timer running in
the PWM mode with SCLK frequency.
This is more accurate than software GPIO output because the CPTS on the
AM335x
can generate hardware timestamp event on the rising edge of the DMTimer,
making it possible to synchronize
Hi,
I am learning about PTP and doing tests on 2 Beaglebone Blacks running a
recent stable linux (v3.18.16) with disabled dynamic ticks. They support
hardware timestamping and I have synchronized the system clocks to the
PHC. My logs show what seem to be good values:
ptp4l[4253.258]: master
On Wed, Jul 29, 2015 at 02:46:34PM +0200, Juan Solano wrote:
I am learning about PTP and doing tests on 2 Beaglebone Blacks running a
recent stable linux (v3.18.16) with disabled dynamic ticks. They support
hardware timestamping and I have synchronized the system clocks to the
PHC. My logs
