> This is what we were recommended to use at the time. There is a patch > on www.powerdeveloper.org which tweaks the tree to make it ultra-compliant > with the Linux version of things, which implements every variation. It > also implements a suggested patch which added a "big-endian" property > (not built in to the compatible property, but another property). > > I don't see why THAT patch got reverted as it was a great idea that we > all agreed was a great idea.
I agree. Something needs to be fixed on the OHCI OF stuff, it should definitely cope with the "big-endian" property (which is a practice borrowed from Apple that I recommended I think back then) and I don't see any problem with having ohci-be in the "compatible" property, its trivial enough to cope in the driver and being anal about it on the kernel side doesn't really bring any benefit. Care to send a patch ? > Linux development around here is getting really schizophrenic. Nobody > is writing these decisions down even as comments in the source code.. That isn't entirely true. There's the ePAPR effort on power.org that is codifying a lot of that, and there are binding documents dropped in Documentation/powerpc. > No; you can have little endian OHCI controllers on big endian machines. > It's a property of the host controller, not the system architecture, just > like PCI is always little endian (except when you have magic in hardware > like Amiga PowerUP cards which endianswap for you :) In fact, you can have both kinds on the same machine. Note about the Amiga stuff: it's a bad idea :-) Every attempt at "magically" fixing endian in HW is a recipe for tears and disasters. Approximately ... always. The only cases that I know that have a remote chance of being useful are specifically programmable swappers on a given device or per-page endian configuration in the processor (like BooKE). Cheers, Ben. _______________________________________________ Linuxppc-dev mailing list [email protected] https://ozlabs.org/mailman/listinfo/linuxppc-dev
