Thanks Vitaly, On Thu, 2006-08-24 at 22:06 +0400, Vitaly Bordug wrote:
> I'd suggest to make a look at LDD concerning linux device model... Thanks. I'll read it again. My little brain absorbs this stuff very slowly. > For platform device, there's no need to cope with u-boot at all. You'll > prolly need to > register the respective platform device from the board-specific code, with > proper name > and driver's board-specific platform info. You may have a look at > arch/ppc/syslib/ppc_sys.c about static > PD definitions usage. My particular platform (MPC8349) gets its hardware info (CPU, IMMBAR, PCI, I2C, SPI resources etc.) from an OF device tree that is generated alongside U-boot and I guess embedded in the uImage file. (I apologize if I'm getting my jargon mixed up here) The OF device tree idea seemed like a slick way to abstract away some HW settings from Linux. I was imagining writing board-side platform device registration that gets its settings from the device tree, allowing a bit of re-use between similar but not identical boards. > > I'd make sense to figure out the platform device bus before digging into > device trees. It's slightly > different stuff, for similar aim, but anyway... Actually you do not strictly > need devtree to cope with > your case afaiu. I definitely have much learning to do. Thanks very much for the pointers! regards, Ben
