On Fri, May 22, 2026 at 05:29:22PM +0530, Sumit Garg wrote: > From: Mukesh Ojha <[email protected]> > > All the existing variants Kodiak boards are using Gunyah hypervisor > which means that, so far, Linux-based OS could only boot in EL1 on those > devices. However, it is possible for us to boot Linux at EL2 on these > devices [1]. > > When running under Gunyah, the remote processor firmware IOMMU > streams are controlled by Gunyah. However, without Gunyah, the IOMMU is > managed by the consumer of this DeviceTree. Therefore, describe the > firmware streams for each remote processor. > > Add a EL2-specific DT overlay and apply it to Kodiak IOT variant > devices to create -el2.dtb for each of them alongside "normal" dtb. > > Note that modem and media subsystems haven't been supported yet due > to missing dependencies. For GPU to work, zap shader is disabled and > in EL2 mode the kernel owns hardware watchdog which is enabled here. > > [1] > https://docs.qualcomm.com/bundle/publicresource/topics/80-70020-4/boot-developer-touchpoints.html#uefi > > Signed-off-by: Mukesh Ojha <[email protected]> > [SG: watchdog and modem fixup] > Signed-off-by: Sumit Garg <[email protected]>
As discussed internally, I will be taking this patch separately and you can drop this from series. -- -Mukesh Ojha
