Low network throughput on i.MX28

Fabio Estevam festevam at gmail.com
Sat Nov 5 05:48:12 PDT 2016


Hi Vinod,

On Sat, Nov 5, 2016 at 10:39 AM, Koul, Vinod <vinod.koul at intel.com> wrote:
> On Sat, 2016-11-05 at 13:06 +0100, Jörg Krause wrote:
>> @ Vinod
>> In short, I noticed poor performance in the SSP2 (MMC/SD/SDIO)
>> interface on a custom i.MX28 board with a wifi chip attached.
>> Comparing
>> the bandwith with iperf I get >20Mbits/sec on the vendor kernel and
>> <5Mbits/sec on the mainline kernel. I am trying to investigate what
>> the
>> bottleneck is.
>
> is this imx-dma or imx-sdma..

This is drivers/dma/mxs-dma.c, thanks.



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