Re: [PATCH] arm64: dts: qcom: hamoa: Add remoteproc in EL2 device trees

[Xin Liu]

On 1/31/2026 3:56 PM, Dmitry Baryshkov wrote:
> On Thu, Jan 29, 2026 at 11:31:13PM -0800, Xin Liu wrote:
> > All the existing variants Talos boards are using Gunyah hypervisor
> Why are you mentioning Talos here?

Thank you for your reminder. My fault, will update next version.


XIN

> > 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 remoteproc to the EL2 device trees to generate the corresponding
> > -el2.dtb files.
> >
> > [1]
> > https://docs.qualcomm.com/bundle/publicresource/topics/80-70020-4/boot-developer-touchpoints.html#uefi
> >
> > Signed-off-by: Xin Liu <xin.liu@xxxxxxxxxxxxxxxx>
> > ---
> >   arch/arm64/boot/dts/qcom/x1-el2.dtso | 8 ++++++++
> >   1 file changed, 8 insertions(+)