[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [GSoC-2019] About the crossbar and xen
On Wed, 10 Jul 2019, Denis Obrezkov wrote: > Hello, > > so, I think I understood why uart doesn't work, that's because all the > irqs are routed to the crossbar not to GIC, so, xen can't deal with them. > > One thing I am concerned of is the: > interrupt-controller@48281000 { > compatible = "ti,omap5-wugen-mpu", "ti,omap4-wugen-mpu"; > interrupt-controller; > #interrupt-cells = <0x00000003>; > reg = <0x00000000 0x48281000 0x00000000 0x00001000>; > interrupt-parent = <0x00000002>; > phandle = <0x00000008>; > }; > And this is an interrupt-parent for the crossbar. So, it is not clear > for me how it participates in interrupt processing. Any thoughts? > > Here is my device tree: https://pastebin.com/Xec57Jcr Hi Denis, If you look at the GIC node (compatible = "arm,cortex-a15-gic";) the phandle is: phandle = <0x00000002>; I think that means that interrupts go to the GIC via Crossbar; i.e. the parent interrupt controller of Crossbar is the GIC. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
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