[PATCH v3 0/4] arm64: dts: qcom: sdm630/660 FastRPC fixes

From: Nickolay Goppen

Date: Wed Apr 22 2026 - 11:40:50 EST


This series introduces fixes that make FastRPC on SDM660 work properly.
Currently only the calculator_example test passes on both ADSP and
CDSP [1].
Also assign adsp_mem region to the ADSP's FastRPC node.

[1]: https://github.com/qualcomm/fastrpc/issues/269#issuecomment-4232125297

Signed-off-by: Nickolay Goppen <setotau@xxxxxxxxxxxxxx>
---
Changes in v3:
- Brought back patch that changed adsp_mem to reusable (Ekansh Gupta)
- Changed adsp_mem to dynamic allocation (Ekansh Gupta)
- Fixed alignment of the vmids property of adsp
- Link to v2: https://patch.msgid.link/20260420-qcom-sdm660-cdsp-adsp-fastrpc-dts-fix-v2-0-f6c7ab3c889a@xxxxxxxxxxxxxx

Changes in v2:
- Dropped patch that changed adsp_mem to reusable
- Added vmids to fastrpc subnode of adsp (Ekansh Gupta)
- Link to v1: https://patch.msgid.link/20260415-qcom-sdm660-cdsp-adsp-fastrpc-dts-fix-v1-0-03b475b29554@xxxxxxxxxxxxxx

To: Bjorn Andersson <andersson@xxxxxxxxxx>
To: Konrad Dybcio <konradybcio@xxxxxxxxxx>
To: Rob Herring <robh@xxxxxxxxxx>
To: Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx>
To: Conor Dooley <conor+dt@xxxxxxxxxx>
To: Nickolay Goppen <setotau@xxxxxxxxxxxxxx>
Cc: Ekansh Gupta <ekansh.gupta@xxxxxxxxxxxxxxxx>
Cc: linux-arm-msm@xxxxxxxxxxxxxxx
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Cc: ~postmarketos/upstreaming@xxxxxxxxxxx
Cc: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>

---
Nickolay Goppen (4):
arm64: dts: qcom: sdm660: set cdsp compute-cbs' regs properly
arm64: dts: qcom: sdm630: set adsp compute-cbs' regs properly
arm64: dts: qcom: sdm630: describe adsp_mem region properly
arm64: dts: qcom: sdm630: assign adsp_mem region to ADSP FastRPC node

arch/arm64/boot/dts/qcom/sdm630.dtsi | 28 +++++++++++++++++-----------
arch/arm64/boot/dts/qcom/sdm660.dtsi | 36 ++++++++++++++++++------------------
2 files changed, 35 insertions(+), 29 deletions(-)
---
base-commit: 6e0a8c0fe0818b244c6de3a449b3a7107808a459
change-id: 20260415-qcom-sdm660-cdsp-adsp-fastrpc-dts-fix-d0ca7632045a

Best regards,
--
Nickolay Goppen <setotau@xxxxxxxxxxxxxx>