From mboxrd@z Thu Jan  1 00:00:00 1970
From: Bo Shen <voice.shen@atmel.com>
Date: Fri, 5 Jul 2013 09:34:52 +0800
Subject: [U-Boot] : MACB TX timeout
In-Reply-To: <CAD6G_RR7cmv54mq_tPerd7jsTgP7QCXnTeoqJ+HhiRErrskmsw@mail.gmail.com>
References: <CAD6G_RR7cmv54mq_tPerd7jsTgP7QCXnTeoqJ+HhiRErrskmsw@mail.gmail.com>
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To: u-boot@lists.denx.de

Hi Jagan Teki,

On 7/5/2013 03:36, Jagan Teki wrote:
> Hi,
>
> Did anyone find this TX timeout issue on macb(gmac)?
> I observed this issue when i enable d-cache.
>
> Log:
> ----
> zynq-uboot> ping 10.10.70.101
> gmac0: PHY present at 7
> gmac0: link up, 1000Mbps full-duplex (lpa: 0x3800)
> Using gmac0 device
> gmac0: TX timeout
> gmac0: TX timeout
> ping failed; host 10.10.70.101 is not alive

Sure, this will happen, as the macb driver is not worked with d-cache 
enabled.
If you want to let the macb work with d-cache enable, you should modify 
the driver.

BTW, if you want to enable d-cache, the MMU must be enabled.

> Any help.!
>
> --
> Thanks,
> Jagan.

Best Regards,
Bo Shen