RE: [PATCH 1/2] stmmac: introduce flag to dynamically disable TX offload for rockchip devices

[Jose Abreu]

From: Leonidas P. Papadakos <papadakospan@xxxxxxxxx>
Date: Fri, Apr 12, 2019 at 12:13:52

> 
> > Can you please share the stacktrace here ? I can't access pastebin 
> > due to
> > corporate policy.
> 
> This happens seconds after I change the MTU. I remember it used to 
> happen with 1500 as well, before the gmac tweaks. It makes sense
>

Notice that incorrect settings of PBL can cause Queue timeout. Can you 
try with PBL = 0x1 and no-pbl-x8 and let me know if the timeout still 
happens?
 
> 
> When you say FIFO size, is that related to the tx/rx_delay?

No, FIFO size is the Queue FIFO size that stores packets after DMA 
fetches them.

Thanks,
Jose Miguel Abreu