Re: [PATCH v4 0/3] arm64: dts: qcom: shikra: Add EL2 overlay for EVK variants

[Komal Bajaj <komal.bajaj@oss.qualcomm.com>]

On 11/4/2026 7:33 PM, Komal Bajaj wrote:
> All existing Shikra EVK board variants boot Linux under a hypervisor,
> which means Linux typically runs at EL1. For EL2 boot without the
> hypervisor, remote processor firmware IOMMU streams must be described in
> the DeviceTree consumed by Linux.
>
> Add a Shikra EL2-specific DT overlay and wire it up in the Makefile to
> produce -el2.dtb artifacts for the Shikra EVK variants alongside the
> regular dtbs.
>
> This series also relaxes the Qualcomm PAS remoteproc `iommus` item limit,
> needed for Shikra EL2 remoteproc SMMU mappings.
>
> Komal Bajaj (2):
>    dt-bindings: remoteproc: qcom,shikra-pas: Allow 3 IOMMUs for LPAICP
>    arm64: dts: qcom: shikra: Add EL2 overlay for remoteproc SMMU mappings
>
>   .../bindings/remoteproc/qcom,pas-common.yaml       |  3 ++-
>   arch/arm64/boot/dts/qcom/Makefile                  | 12 ++++++++++++
>   arch/arm64/boot/dts/qcom/shikra-el2.dtso           | 23 +++++++++++++++++++++++
>   3 files changed, 37 insertions(+), 1 deletion(-)
>
> Signed-off-by: Komal Bajaj <komal.bajaj@oss.qualcomm.com>

I  have addressed these comments in v5, which is available here: 
https://lore.kernel.org/all/20261113-shikra-el2-v5-0-8aca743de97f@oss.qualcomm.com/

Thanks
Komal

> ---
> Changes in v4:
> - Add a patch to move the iommus constraint from qcom,pas-common.yaml to SoC-specific PAS bindings (Mukesh)
> - Add iommus constraints for all Shikra PAS compatibles instead of only relaxing the limit for LPAICP
> - Add WiFi firmware iommus to Shikra EL2 overlay
> - Link to v3: https://lore.kernel.org/r/20261005-shikra-el2-v3-0-618f7343695c@oss.qualcomm.com
>
> Changes in v3:
> - Drop qcom,pas-common reference and add per-compatible iommus limits for Shikra (Krzysztof)
> - Link to v2: https://lore.kernel.org/r/20260930-shikra-el2-v2-0-f0822be5aaee@oss.qualcomm.com
>
> Changes in v2:
> - Relax the Qualcomm PAS remoteproc `iommus` item limit, needed for Shikra EL2 remoteproc SMMU mappings.
> - Link to v1: https://lore.kernel.org/r/20260918-shikra-el2-v1-1-07bb072baa31@oss.qualcomm.com
>
> ---
> Komal Bajaj (3):
>        dt-bindings: remoteproc: Move iommus constraint to SoC-specific bindings
>        dt-bindings: remoteproc: qcom,shikra-pas: Add iommus constraints
>        arm64: dts: qcom: shikra: Add EL2 overlay for remoteproc SMMU mappings
>
>   .../bindings/remoteproc/qcom,pas-common.yaml       |  3 ---
>   .../bindings/remoteproc/qcom,sa8775p-pas.yaml      |  6 +++++
>   .../bindings/remoteproc/qcom,shikra-pas.yaml       |  5 ++++
>   .../bindings/remoteproc/qcom,sm8150-pas.yaml       | 12 +++++++++
>   .../bindings/remoteproc/qcom,sm8550-pas.yaml       | 12 +++++++++
>   arch/arm64/boot/dts/qcom/Makefile                  | 11 ++++++++
>   arch/arm64/boot/dts/qcom/shikra-el2.dtso           | 29 ++++++++++++++++++++++
>   7 files changed, 75 insertions(+), 3 deletions(-)
> ---
> base-commit: d6bcfc94eb4da6e089c5473970cd96727292fd97
> change-id: 20260918-shikra-el2-ea8969385c3c
>
> Best regards,