[U-Boot] [PATCH 4/5] powerpc: keymile: Add a check for the PIGGY debug board

[Heiko Schocher]

Hello Ben

Ben Warren wrote:
> Heiko Schocher wrote:
>   
>> Check the presence of the PIGGY on the keymile boards mgcoge,
>> mgsuvd and kmeter1. If the PIGGY is not present, dont register
>> this Ethernet device.
>>
>> Signed-off-by: Heiko Schocher <hs at denx.de>
>> ---
>>     
> This looks like useful stuff to have, but I'd prefer that you put the 
> check logic in board_eth_init() rather than adding to the individual 
> device drivers.  I know the 8260 SCC driver is the older style, which 
> precludes the use of board_eth_init, but I'll convert it if you're able 
> to test.
>   

Yes, I could test such a change for you, but hmm... I am not sure, if
board_eth_init () is the right place for my purpose.
I need for every Ethernet device a selection, if this device is present or
not.
Correct me if I am wrong, but it looks like board_eth_init ()
is not made for this purpose. (Ok, I can do a specific device init
in board_eth_init (), but then we must do something, that prevents
that the device is again initialized in eth_initialize () ...

Hmm... while writing this it comes a idea in my mind:
we could move all the *_initialize functions in eth_initialize () in a
seperate function, say eth_hardware_init() and maybe making this
function "weak", so a board writer can write his own
eth_hardware_init() ... in such a function, I could check which
device is present, and only initialize the present devices ...
what do you think?

bye
Heiko