On 3/9/2016 5:31 PM, Dinh Nguyen wrote:

On Wed, Mar 9, 2016 at 8:53 AM, Giuseppe CAVALLARO
[off-list ref] wrote:

quoted

Hi Tomeu, Dinh, Andreas

I need a sum and help from you to go ahead on the
tx timeout.

The "stmmac: MDIO fixes" seems to be the candidate to
fix the phy connection and I will send the V2 asap (Andreas' comment).

So, supposing the probe is ok and phy is connected,
I need your input ...

  Tomeu: after revering the 0e80bdc9a72d (stmmac: first frame
         prep at the end of xmit routine) the network is
         not stable and there is a timeout after a while.
         The box has 3.50 with normal desc settings.

  Dinh: the network is ok, I wonder if you can share a boot
        log just to understand if the normal or enhanced
        descriptors are used.

Here it is:

...

[    0.850523] stmmac - user ID: 0x10, Synopsys ID: 0x37
[    0.855570]  Ring mode enabled
[    0.858611]  DMA HW capability register supported
[    0.863128]  Enhanced/Alternate descriptors
[    0.867482]  Enabled extended descriptors
[    0.871482]  RX Checksum Offload Engine supported (type 2)
[    0.876948]  TX Checksum insertion supported
[    0.881204]  Enable RX Mitigation via HW Watchdog Timer
[    0.886863] socfpga-dwmac ff702000.ethernet eth0: No MDIO subnode found
[    0.899090] libphy: stmmac: probed
[    0.902484] eth0: PHY ID 00221611 at 4 IRQ POLL (stmmac-0:04) active

Thx Dinh, so you are using the Enhanced/Alternate descriptors
I am debugging on my side on a setup with normal descriptors, I let you
know

peppe