On Monday 30 September 2013 09:59 AM, Sricharan R wrote: > Some socs have a large number of interrupts requests to service > the needs of its many peripherals and subsystems. All of the interrupt > requests lines from the subsystems are not needed at the same > time, so they have to be muxed to the controllers appropriately. > In such places a interrupt controllers are preceded by an > IRQ CROSSBAR that provides flexibility in muxing the device interrupt > requests to the controller inputs. > > This series models the peripheral interrupts that can be routed through > the crossbar to the GIC as 'routable-irqs'. The routable irqs are added > in a separate linear domain inside the GIC. The registered routable domain's > callback are invoked as a part of the GIC's callback, which in turn should > allocate a free irq line and configure the IP accordingly. So every peripheral > in the dts files mentions the fixed crossbar number as its interrupt. A free > gic line for that gets allocated and configured when the peripheral's interrupt > is mapped. > > The minimal crossbar driver to track and allocate free GIC lines and configure the > crossbar is added here, along with the DT bindings. > You should have references to the previous discussions so that its easier for new reviewers to understand why you ended up the approach. I noticed you missed this in your last posts as well. Regards, Santosh -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
