On 03-09-2018 16:38, Jerome Brunet wrote: > On Mon, 2018-09-03 at 16:22 +0100, Jose Abreu wrote: >> On 03-09-2018 15:10, Jerome Brunet wrote: >>> On Mon, 2018-09-03 at 12:47 +0100, Jose Abreu wrote: >>>> On 03-09-2018 11:16, Jerome Brunet wrote: >>>>> No notable change. Rx is fine but Tx: >>>>> [ 5] 3.00-4.00 sec 3.55 MBytes 29.8 Mbits/sec 51 12.7 KBytes >>>>> >>>>> I suppose the problem as something to do with the retries. When doing Tx >>>>> test >>>>> alone, we don't have such a things a throughput where we expect it to be. >>>> Yeah, I just remembered you are not using GMAC4 so it wouldn't >>>> make a difference. Is your version 3.710? If so please try adding >>>> the following compatible to your DT bindings "snps,dwmac-3.710". >>> According to the documentation, it is a 3.70a but I learn (the hard way) >>> not to >>> trust the documentation too much. Is there anyway to make sure which >>> version we >>> have. Like a register to read ? >> It should be dumped at probe by a string like this one: >> >> "User ID: 0xXY, Synopsys ID: 0xXZ" > User ID: 0x11, Synopsys ID: 0x37 ? What to does it map to ?
Its 3.7. As for the User ID this can be changed by final HW team so I can't confirm what it means. > >>> Out of curiosity, I changed the compatible to "snps,dwmac-3.710" anyway. For >>> some reason, the MDIO bus failed to register with this. Since it is not the >>> documented version, I did not check why. >> No you can't change. You need to add it. So it should stay like this: >> >> compatible = "amlogic,meson-gxbb-dwmac", "snps,dwmac", >> "snps,dwmac-3.710"; > Adding "snps,dwmac-3.710" does not change anything for me. > Having both Tx and Rx at the same time still wreck Tx throughput > unfortunately Okay, so you said that there are lots of retries: can you disable COE at all ? (it should be something like: ethtool -K eth0 rx off tx off). Thanks and Best Regards, Jose Miguel Abreu > >> Thanks and Best Regards, >> Jose Miguel Abreu >> >>>>> By the way, your mailer (and its auto 80 column rule I suppose) made the >>>>> patch >>>>> below a bit harder to apply >>>> Sorry. Next time I will send as attachment. >>> No worries >>> >>>> Thanks and Best Regards, >>>> Jose Miguel Abreu >> >
