"Shaju Abraham" <shajuabra...@gmail.com> wrote:
>On Wed, Sep 22, 2010 at 3:32 AM, Benjamin Herrenschmidt ><b...@kernel.crashing.org> wrote: >> The main grief one could have with my scheme is the naming of irq_host >> which has confused people in the past. It should probably be irq_domain >> to make clear what it is. It generally have a 1:1 relationship to the >> irq_chip but there are cases where that isn't the case (essentially >> where you have multiple irq_chip per domain) for various reasons so it's >> better to keep those separate. >> > >How do we handle multiplexed interrupts ? For example a single interrupt line >representing multple irq sources. >We have ARM systems with single interrupt line on a VIC muxed to >192 different GPIO sources (each capable of generating interrupts). For such a >system the virq to hw irq mapping can get complex. Assign a separate irq number to each gpio. In effect, this makes the gpio controller an irq controller. g. -- Sent from my Android phone with K-9 Mail. Please excuse my brevity. _______________________________________________ devicetree-discuss mailing list devicetree-discuss@lists.ozlabs.org https://lists.ozlabs.org/listinfo/devicetree-discuss
