Re: [microblaze-uclinux] newbie question on xilinx_ll_temac.c u-boot driver

[Michal Simek <michal.simek@xxxxxxxxxxxxx>]

L.Campora@xxxxxxxx wrote:
> 
> Michal,
> 
>>> I got your 1.10 project as stored in petalogix repo. u-boot works.
>>> Then I migrated the project to 11.1: works.
>>> Then I started to migrate deprecated IP's: hard temac stops working
>>> and shows that strange behaviour after having changed IP from 1.01b to
>>> 2.00a.
>>
>> First of all check that IP works under linux - petalinux-jtag-boot
>> to run the linux kernel and test if IP works or not. This is easy
> functional
>> test that your hw is ok.
> 
> I think it won't work... By simply checking the source code of the
> driver in the linux-microblaze-2.6 repo,
> it states FDT compatibility with xps-ll-temac up to 1.01.b.
> At least it requires me to completely rebuild linux and add a
> compatibility rule to the source code.

It doesn't matter if is there or not. Latest bsp generate backward compatible list.

> 
>> If not- check timing constrains.
> 
> I'll discuss this with my hw engineer.
> 
> 
>> The second choice is to look at xilinx doc and see what the
> differences are.
> 
> Lots of differences, but Xilinx states that they are extensions, which
> should not be enabled by default
> (vlan handling, L4 checksum offload, filtering etc...)
> What you can see macroscopicaly is that the memory map declared by 2.00a
> is 0x80000 wide, but EDK still
> allocates a 64K space.
> This makes me think that 2.00a maybe is not that stable...

You can ask xilinx about. It is paid IP core.
I'll ask xilinx guy if they test it or not.

Regards,
Michal

> 
> Regards, and many thanks for your precious help.
> 
> Luigi
> 
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-- 
Michal Simek, Ing. (M.Eng)
PetaLogix - Linux Solutions for a Reconfigurable World
w: www.petalogix.com p: +61-7-30090663,+42-0-721842854 f: +61-7-30090663
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