Thread (28 messages) flat view 28 messages, 5 authors, 2007-05-05

Re: powerpc_flash_init(), wtf!?

From: Sergei Shtylyov <hidden>
Date: 2007-05-03 17:51:46

Hello, I wrote:
quoted
Now for ROM/flash/NVRAM, nodes _can_ appear directly
under the root, but only if that is where they belong
on your platform (i.e., they sit directly on the "system
bus" (whatever that means on your platform); on most
platforms though, such devices are connected via some
I/O busses, so the nodes should appear under their
respective controllers.
    Yeah, you're right here, and I've probably misunderstood what "memory" 
node was. In fact, the flash in my system resides on the same local bus as 
RAM, so the proper place would be behind the "lbc" (or whatever -- it doesn't 
exist as yet) node on the "soc" bus.  Do you think I need to go and document 
it as well for such cause? :-]
    No, that probably won't do. MPC85xx SoC bus has ranges = <e0000000 
00100000> and the NOR flash is mapped at 0xff000000, so it seems that it can't 
be located under the "soc" bus (unless that latter has "ranges" prop extended?).
quoted
Segher
WBR, Sergei
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