Re: [PATCH] [POWERPC] 85xx: Add basic Uniprocessor MPC8572 DS port
From: Kumar Gala <hidden>
Date: 2007-09-11 17:56:36
On Sep 11, 2007, at 12:48 PM, Scott Wood wrote:
Olof Johansson wrote:quoted
On Tue, Sep 11, 2007 at 12:21:30PM -0500, Scott Wood wrote:quoted
Olof Johansson wrote:quoted
On Tue, Sep 11, 2007 at 11:00:28AM -0500, Kumar Gala wrote:quoted
well the ifdefs are orthogonal. We don't have a way of knowing primary from the device tree today.How about something like "fsl,primary-phb" in the bus device node? I don't know, maybe it's already been discussed and turned down for some reason.It's more of a Linux issue than anything to do with the hardware.That doesn't stop firmware from telling linux which bus is the primary one on the system to help out.The entire notion of a "primary" PCI bus is due to a Linux flaw. If we did put it in the device tree, it should be something like "linux,primary-phb". But since Linux can tell from the node's children, there doesn't seem to be much point.
Once someone rights code to do this I'm happy to change over. I took this model of explicitly knowing the primary PHB from the pmac code. - k