>> > |1. How do I locate all usb nodes in the device tree? >> > | >> > |2. How do I know if a particular usb node is OHCI?
You look for compatible "usb-ohci". But this doesn't help you. You do not know yet if the problem happens for all usb-ohci; for example, it could be that you have the console output device on usb; or as another example, it could be that this firmware leaves all pci devices in some active state. So as I see it you have only two options: 1) Figure out what exactly is going on; or 2) make the kernel shut down all pci devices early (either in actual kernel code, or in an OF boot script). > The big question that I'm still stumbling over is how to access the device > registers. The "reg" property looks like this: You should look at "assigned-addresses", not "reg". Well, you first need to look at "reg" to figure out what entry in "assigned-addresses" to use. Segher _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
