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Date: Fri, 27 Nov 2009 00:02:18 +0100
From: Albert Herranz <albert_herranz@yahoo.es>
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To: Segher Boessenkool <segher@kernel.crashing.org>
Subject: Re: [RFC PATCH 04/19] powerpc: wii: device tree
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Segher Boessenkool wrote:
>> So what is at d0000000 ?
> 
> 0c000000 is the flipper-compatible stuff
> 0d000000 is the hollywood new devices
> 0d800000 is the same as part of 0d000000, but with some extra bits
> sometimes.
> 

Also, when in Wii native mode, stuff like EXI, SI and AI (which is flipper-compatible stuff too) is available at 0d000000 only.

>>>> +        serial@0d006400 {
>>>> +            compatible = "nintendo,hollywood-serial";
>>>
>>> You might want to pick a more descriptive name for this,
>>> "serial" is usually understaood to mean "RS232".  Which
>>> this isn't.
>>
>> What is it then ? You definitely want some other name if it's not
>> classic rs232 style serial.
> 
> It's SPI I think, with some extra signals.  It's the gamepads mostly.
> 

EXI is SPI.
But SI is a different thingy.

See http://www.int03.co.uk/crema/hardware/gamecube/gc-control.htm .

> 
> Segher
> 
> 

Cheers,
Albert