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From: Segher Boessenkool <segher@kernel.crashing.org>
Subject: Re: [RFC PATCH 04/19] powerpc: wii: device tree
Date: Thu, 26 Nov 2009 23:50:53 +0100
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Albert Herranz <albert_herranz@yahoo.es>, linuxppc-dev@lists.ozlabs.org
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> BTW. If we want to play with clocks, maybe you should look at
> my proposed binding for clocks and implementing the clk API :-)

There are no clocks that are configurable from the PowerPC side
(well, maybe things like the USB clocks, but we do not know how).

>>> +		/* Team Twiizers' 'mini' firmware IPC */
>>> +		mini@0d000000 {
>>
>> Although mini is awesome, it isn't hardware, and doesn't
>> belong in the device tree.
>
> 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.

>>> +		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.


Segher