[U-Boot] : MACB TX timeout

[Bo Shen]

Hi Jagan,

On 7/5/2013 10:48, Jagan Teki wrote:
> Hi Bo Shen,
>
> Thanks for your info.
>
> On Fri, Jul 5, 2013 at 7:04 AM, Bo Shen <voice.shen at atmel.com> wrote:
>> 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.
> Can you point any existing driver that have a d-cache working.

I see the driver of ftgmac100 is doing the thing, but I am not sure 
whether the code is merged.

>> 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.
> Specific setup to enable to MMU, please point.
> I see that we need to write dram_bank_mmu_setup() and
> arm_init_domains() on d-cache enable code in
> soc folders is that true? please let me know your views.

I am sorry, no information can share with you at this moment.

> --
> Thanks,
> Jagan.
>

Best Regards,
Bo Shen