Messages in this thread | | | Date | Tue, 29 Jun 2010 19:36:18 -0400 | From | Andres Salomon <> | Subject | Re: [PATCH 2/4] sparc: break out some prom device-tree building code out into drivers/of |
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On Tue, 29 Jun 2010 15:42:54 -0600 Grant Likely <grant.likely@secretlab.ca> wrote:
> On Tue, Jun 29, 2010 at 9:03 AM, Andres Salomon <dilinger@queued.net> > wrote: [...] > > > Sparc and OLPC have very similar > > mechanisms for getting device tree info from OFW, so it makes sense > > to share code between them. > > Other than the flattened tree step; is the powerpc method dissimilar > from the Sparc and OLPC method for talking to OFW? (This is not a > rhetorical question, I'm want to know if I'm missing some details). > The main difference I know about is that OFW can still kept alive at > runtime for sparc, which powerpc does not do. However, keeping OFW > callable is a separate issue from how to extract the device tree. >
After having a look at powerpc's flatten_device_tree, I don't see any obvious reason why OLPC couldn't use this (though it still strikes me as weird to go from prom->fdt->dt when the option of prom->dt is available and less complex). Do you already have the patches that put this into drivers/of/?
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