[U-Boot] [PATCH v3 9/9] net/designware: Reduce DMA burst length

Chen-Yu Tsai
2014-04-27T15:29:29Z

On Sun, Apr 27, 2014 at 11:25 PM, Ian Campbell <ijc@hellion.org.uk> wrote:
> On Sat, 2014-04-26 at 20:28 +0200, Marek Vasut wrote:
>> On Friday, April 18, 2014 at 08:05:50 PM, Ian Campbell wrote:
>> > From: Jens Kuske <jenskuske@gmail.com>
>> >
>> > The GMAC module in Allwinner sunxi SoCs seems to have problems with
>> > burst lengths > 8.
>>
>> Is there any explanation for the problems please ?
>
> Jens or Wens, can you answer this?

IIRC, with burst lengths > 8, GMAC doesn't work, no ping, no DHCP.
I don't remember if it was TX or RX that suffered, or even both.

Hope this clarifies things a bit.

ChenYu