Hello Martin
On 11/7/2016 6:37 PM, Martin Blumenstingl wrote:
Hi Peppe,
On Mon, Nov 7, 2016 at 11:59 AM, Giuseppe CAVALLARO
<peppe.cavall...@st.com> wrote:
In the meantime, I will read again the thread just to see if
there is something I am missing.
if you are re-reading this thread: please note that there are two
devices in discussion here!
many thx for the sum :-)
Both are using the Amlogic S905 (GXBB) SoC and both are experiencing
the same issue (Gbit TX issues, RX with Gbit speeds and RX/TX with
100Mbit speed are NOT affected):
- Odroid-C2 (used by Jerome and André Roth)
- Tronsmart Vega S95 Meta (my device)
The (Gbit TX) problem seems to be gone on the Odroid-C2 with Jerome's
patch which disables EEE in drivers/net/phy/realtek.c (at least in his
tests, I don't have that device so I can't verify).
The same problem still appears on my Tronsmart Vega S95 Meta even with
the patched PHY driver.
just an doubt, maybe useful, in the past, on GiGa setup I saw similar
problems and it was due to retiming so maybe 2ns could be necessary
(or better granularity via PAD logic if available).
Regards
Peppe
Unfortunately I don't have a second device to rule out that my
Tronsmart Vega S95 Meta could be broken (not unlikely, I get DDR
errors from time to time in u-boot). Maybe Andreas Faerber can test
ethernet with and without Jerome's patch on one of his Tronsmart
devices.
Regards,
Martin
