On Thu, Nov 07, 2013 at 08:25:58PM +0100, Sebastian Andrzej Siewior wrote: > On 06.11.13, Guenter Roeck wrote: > |… > thanks for the explanation. > > > We use DT overlays to describe the hardware on those boards and, if > > necessary, > > its configuration. For example, if there is a PCIe switch, the overlay would > > describe its memory and bus number configuration. > > So have your "fix" configuration and a few overlays you switch at > runtime. The problem you have is that you want to switch a specific part > if your configuration at runtime. I assume you run DT on ARM. What > happens if you swtich from ARM to x86 and you "keep" your FPGA > configuration requirement? You can't use both, DT and ACPI, right? So > what happens then? > We intend to use DT on x86 to augment ACPI data. There is a variety of reasons why we can not use ACPI, nor do we want to as we prefer a single method for handling OIR on all platforms. FWIW, the non-x86 platform is powerpc, not arm.
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