Qualcomm IPQ SoCs also have the IMEM region and used for the various
debugging purposes like storing system restart reason and so on. As a
preparatory work, first describe the IMEM region and susbsequently add
the required features.

Across all SoCs, only initial 4KB can be accessed by all the masters in the
SoC, remaining regions are access protected.

Signed-off-by: Kathiravan Thirumoorthy <kathiravan.thirumoorthy@oss.qualcomm.com>
---
Changes in v2:
- Dropped the IPQ5424 support
- Sorted the compatibles list
- Rounded off the size for IPQ8074 and IPQ6018
- In IPQ6018, use 0x0 for reg instead of 0
- Link to v1:
  https://lore.kernel.org/linux-arm-msm/20250702-imem-v1-0-12d49b1ceff0@oss.qualcomm.com/

---
Kathiravan Thirumoorthy (6):
      dt-bindings: sram: qcom,imem: Document Qualcomm IPQ SoC's IMEM compatibles
      arm64: dts: qcom: ipq8074: Add the IMEM node
      arm64: dts: qcom: ipq6018: Add the IMEM node
      arm64: dts: qcom: ipq5018: Add the IMEM node
      arm64: dts: qcom: ipq9574: Add the IMEM node
      arm64: dts: qcom: ipq5332: Add the IMEM node

 Documentation/devicetree/bindings/sram/qcom,imem.yaml | 5 +++++
 arch/arm64/boot/dts/qcom/ipq5018.dtsi                 | 9 +++++++++
 arch/arm64/boot/dts/qcom/ipq5332.dtsi                 | 9 +++++++++
 arch/arm64/boot/dts/qcom/ipq6018.dtsi                 | 9 +++++++++
 arch/arm64/boot/dts/qcom/ipq8074.dtsi                 | 9 +++++++++
 arch/arm64/boot/dts/qcom/ipq9574.dtsi                 | 9 +++++++++
 6 files changed, 50 insertions(+)
---
base-commit: 26ffb3d6f02cd0935fb9fa3db897767beee1cb2a
change-id: 20250702-imem-9799ae786170

Best regards,
-- 
Kathiravan Thirumoorthy <kathiravan.thirumoorthy@oss.qualcomm.com>