[U-Boot] MACB TX timeout

[Andreas Bießmann]

Hi Jason,

On 08.02.15 07:52, Jason Fu wrote:
> Hi,
> 
> I'm working on sama5d36 evaluation kit. From u-boot, I have set mac, ip. When I try to ping a ip address on LAN. I get "TX timeout". I can ping the ip successful with gmac0, but couldn't with macb0.
> Did anyone find this issue before?

have you checked your errata notice [1] in chapter 7.1.1? If you have a
rev C base board you should add the impedance mismatch fix mentioned there.

Best regards

Andreas Bießmann

[1]
http://www.atmel.com/Images/Atmel_11180_32-bit-Cortex-A5-Microcontroller_SAMA5D3-Series-EK_User-Guide.pdf