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

[Komal Bajaj]

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@xxxxxxxxxxxxxxxx>
---
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@xxxxxxxxxxxxxxxx

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@xxxxxxxxxxxxxxxx

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@xxxxxxxxxxxxxxxx

---
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,
-- 
Komal Bajaj <komal.bajaj@xxxxxxxxxxxxxxxx>