* [Q] zynqmp-ipi-mailbox and SGI interrupts
@ 2026-10-15 8:39 Sebastian Andrzej Siewior
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From: Sebastian Andrzej Siewior @ 2026-10-15 8:39 UTC (permalink / raw)
To: linux-kernel, linux-arm-kernel
Cc: Jassi Brar, Michal Simek, Harini T, Tanmay Shah, Saeed Nowshadi
Hi,
The ZynqMP IPI Mailbox driver supports two bindings of which
xlnx,versal-ipi-mailbox is not present in any kernel dts file and
xlnx,zynqmp-ipi-mailbox is used in two .dtsi files.
For the per-CPU interrupts the irq-type should be 2 (which would
correspond with GIC_ESPI in the dts, no?) which I can't find.
Before the IPI_IRQ_TYPE_SGI it used to check for the value less than 16
I also can't find this in the two available dts file.
I did browse over the "AMD Versal Virt" but it also looks not present.
My question is whether this is used or just a development step that
never got somewhere.
My guess is that the device tree here is preconfigured from the boot
firmware.
So is this SGI-IPI a thing or not?
Sebastian
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