[PATCH v3 0/2] arm64: dts: qcom: shikra: Add EL2 overlay for EVK variants

From: Komal Bajaj

Date: Mon Oct 05 2026 - 07:15:46 EST


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 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 (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,shikra-pas.yaml | 15 ++++++++++++--
arch/arm64/boot/dts/qcom/Makefile | 11 +++++++++++
arch/arm64/boot/dts/qcom/shikra-el2.dtso | 23 ++++++++++++++++++++++
3 files changed, 47 insertions(+), 2 deletions(-)
---
base-commit: f0406245cb9855e6318335a8a223551354291a46
change-id: 20260918-shikra-el2-ea8969385c3c

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