linux-kernel - [PATCH v3 00/13] Add dedicated device tree node for RPM processor/subsystem

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Message-Id: <20230531-rpm-rproc-v3-0-a07dcdefd918@gerhold.net>
Date:   Thu, 15 Jun 2023 18:50:33 +0200
From:   Stephan Gerhold <stephan@...hold.net>
To:     Bjorn Andersson <andersson@...nel.org>
Cc:     Andy Gross <agross@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-remoteproc@...r.kernel.org,
        Stephan Gerhold <stephan@...hold.net>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH v3 00/13] Add dedicated device tree node for RPM
 processor/subsystem

The Resource Power Manager (RPM) currently does not have a dedicated 
device tree node that represents the remoteproc/subsystem. The 
functionality exposed through the SMD/GLINK channels is described in 
top-level nodes of the device tree. This makes it hard to group other 
functionality provided by the RPM together in the device tree. This 
series adds a single top-level remoteproc-rpm/rpm-proc device tree node 
that groups all RPM functionality together.

Signed-off-by: Stephan Gerhold <stephan@...hold.net>
---
Changes in v3:
- Rename "glink-rpm" -> "glink-edge" for consistency
- Add extra patch that drops $nodename from qcom,glink-edge.yaml to 
  allow using the same node name for glink-rpm-edge (Krzysztof)
- Link to v2: https://lore.kernel.org/r/20230531-rpm-rproc-v2-0-56a4a00c8260@gerhold.net

Changes in v2:
- Pick up review/test tags from Konrad and Krzysztof
- Rename "remoteproc-rpm" -> "remoteproc" everywhere (Krzysztof/Konrad)
- "dt-bindings: remoteproc: Add Qualcomm RPM processor/subsystem"
  - Squash with other dt-bindings changes to have atomic refactoring (Krzysztof)
  - Add diagrams from discussion as clarification
- "soc: qcom: smem: Add qcom_smem_is_available()"
  - Add return documentation in qcom_smem_is_available() (Konrad)
- "soc: qcom: Add RPM processor/subsystem driver"
  - Add missing of_node_put(), fix children (Konrad)
  - Add depends on RPMSG_QCOM_SMD || RPMSG_QCOM_SMD=n to fix build 
    error in weird kernel configurations (kernel test robot)
- Link to v1: https://lore.kernel.org/r/20230531-rpm-rproc-v1-0-e0a3b6de1f14@gerhold.net

---
Stephan Gerhold (13):
      dt-bindings soc: qcom: smd-rpm: Fix sort order
      dt-bindings: soc: qcom: smd-rpm: Add MSM8909 to qcom,smd-channels
      dt-bindings: soc: qcom: smd-rpm: Add some more compatibles
      soc: qcom: smd-rpm: Match rpmsg channel instead of compatible
      dt-bindings: remoteproc: glink-rpm-edge: Use "glink-edge" as node name
      dt-bindings: remoteproc: Add Qualcomm RPM processor/subsystem
      soc: qcom: smem: Add qcom_smem_is_available()
      rpmsg: qcom_smd: Use qcom_smem_is_available()
      soc: qcom: Add RPM processor/subsystem driver
      arm64: dts: qcom: Add rpm-proc node for SMD platforms
      arm64: dts: qcom: Add rpm-proc node for GLINK gplatforms
      ARM: dts: qcom: Add rpm-proc node for SMD platforms
      ARM: dts: qcom: apq8064: Drop redundant /smd node

 .../bindings/remoteproc/qcom,glink-edge.yaml       |   3 -
 .../bindings/remoteproc/qcom,glink-rpm-edge.yaml   |   2 +-
 .../bindings/remoteproc/qcom,rpm-proc.yaml         | 171 +++++++++++++++++++++
 .../devicetree/bindings/soc/qcom/qcom,smd-rpm.yaml |  23 ++-
 .../devicetree/bindings/soc/qcom/qcom,smd.yaml     |   7 +
 arch/arm/boot/dts/qcom-apq8064.dtsi                |  40 -----
 arch/arm/boot/dts/qcom-apq8084.dtsi                |   6 +-
 arch/arm/boot/dts/qcom-msm8226.dtsi                |  38 ++---
 arch/arm/boot/dts/qcom-msm8974.dtsi                |  44 +++---
 arch/arm64/boot/dts/qcom/ipq6018.dtsi              |  48 +++---
 arch/arm64/boot/dts/qcom/ipq9574.dtsi              |  28 ++--
 arch/arm64/boot/dts/qcom/msm8916.dtsi              |   6 +-
 arch/arm64/boot/dts/qcom/msm8939.dtsi              | 112 +++++++-------
 arch/arm64/boot/dts/qcom/msm8953.dtsi              | 136 ++++++++--------
 arch/arm64/boot/dts/qcom/msm8976.dtsi              | 152 +++++++++---------
 arch/arm64/boot/dts/qcom/msm8994.dtsi              |  99 ++++++------
 arch/arm64/boot/dts/qcom/msm8996.dtsi              | 113 +++++++-------
 arch/arm64/boot/dts/qcom/msm8998.dtsi              |  98 ++++++------
 arch/arm64/boot/dts/qcom/qcm2290.dtsi              | 126 +++++++--------
 arch/arm64/boot/dts/qcom/qcs404.dtsi               | 152 +++++++++---------
 arch/arm64/boot/dts/qcom/sdm630.dtsi               | 132 ++++++++--------
 arch/arm64/boot/dts/qcom/sm6115.dtsi               | 128 +++++++--------
 arch/arm64/boot/dts/qcom/sm6125.dtsi               | 140 +++++++++--------
 arch/arm64/boot/dts/qcom/sm6375.dtsi               | 126 +++++++--------
 drivers/rpmsg/qcom_smd.c                           |  10 +-
 drivers/soc/qcom/Kconfig                           |   1 +
 drivers/soc/qcom/Makefile                          |   2 +-
 drivers/soc/qcom/rpm-proc.c                        |  77 ++++++++++
 drivers/soc/qcom/smd-rpm.c                         |  35 ++---
 drivers/soc/qcom/smem.c                            |  11 ++
 include/linux/soc/qcom/smem.h                      |   1 +
 31 files changed, 1162 insertions(+), 905 deletions(-)
---
base-commit: d89ca618c27b9720f40c7f2b0cde673b51583059
change-id: 20230531-rpm-rproc-758364839cdd

Best regards,
-- 
Stephan Gerhold <stephan@...hold.net>