linux-kernel - [PATCH RFC 00/15] Convert Qualcomm RPM message RAM to a simple-mfd

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Date:   Sat, 11 Mar 2023 02:21:30 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Lee Jones <lee@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc:     Rob Herring <robh@...nel.org>, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Konrad Dybcio <konrad.dybcio@...aro.org>
Subject: [PATCH RFC 00/15] Convert Qualcomm RPM message RAM to a simple-mfd

The Qualcomm RPM message RAM is a part of the RPM low-power processor's
actual RAM that's exposed to the Application Processors as a MMIO-mapped
region. It contains a couple of things, most notably the RPM master stats,
detailing per-master (read: per-subsystem) sleep/wake statistics and an
interrupt controller that's crucial to achieving full SoC clock and/or
power collapse states (the MPM). This series tries to prepare the MSG
RAM node to be a host for such devices.

Depends on https://lore.kernel.org/linux-arm-msm/20230308011705.291337-1-konrad.dybcio@linaro.org/

to solve a warning in the example.

The DTS commits don't add -cells or -ranges, as without children they're
not of very much use. They'll be introduced along with subnodes.

Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
---
Konrad Dybcio (15):
      dt-bindings: mfd: Split out Qcom RPM MSG RAM
      arm64: dts: qcom: msm8916: Add simple-mfd to rpm_msg_ram
      arm64: dts: qcom: msm8953: Add simple-mfd to rpm_msg_ram
      arm64: dts: qcom: msm8976: Add simple-mfd to rpm_msg_ram
      arm64: dts: qcom: msm8994: Add simple-mfd to rpm_msg_ram
      arm64: dts: qcom: msm8996: Add simple-mfd to rpm_msg_ram
      arm64: dts: qcom: msm8998: Add simple-mfd to rpm_msg_ram
      arm64: dts: qcom: qcs404: Add simple-mfd to rpm_msg_ram
      arm64: dts: qcom: sdm630: Add simple-mfd to rpm_msg_ram
      arm64: dts: qcom: sm6115: Add simple-mfd to rpm_msg_ram
      arm64: dts: qcom: sm6125: Add simple-mfd to rpm_msg_ram
      arm64: dts: qcom: sm6375: Add simple-mfd to rpm_msg_ram
      ARM: dts: qcom-apq8084: Add simple-mfd to rpm_msg_ram
      ARM: dts: qcom-msm8226: Add simple-mfd to rpm_msg_ram
      ARM: dts: qcom-msm8974: Add simple-mfd to rpm_msg_ram

 .../devicetree/bindings/mfd/qcom,rpm-msg-ram.yaml  | 82 ++++++++++++++++++++++
 Documentation/devicetree/bindings/sram/sram.yaml   |  2 -
 arch/arm/boot/dts/qcom-apq8084.dtsi                |  2 +-
 arch/arm/boot/dts/qcom-msm8226.dtsi                |  2 +-
 arch/arm/boot/dts/qcom-msm8974.dtsi                |  2 +-
 arch/arm64/boot/dts/qcom/msm8916.dtsi              |  2 +-
 arch/arm64/boot/dts/qcom/msm8953.dtsi              |  2 +-
 arch/arm64/boot/dts/qcom/msm8976.dtsi              |  2 +-
 arch/arm64/boot/dts/qcom/msm8994.dtsi              |  2 +-
 arch/arm64/boot/dts/qcom/msm8996.dtsi              |  2 +-
 arch/arm64/boot/dts/qcom/msm8998.dtsi              |  2 +-
 arch/arm64/boot/dts/qcom/qcs404.dtsi               |  2 +-
 arch/arm64/boot/dts/qcom/sdm630.dtsi               |  2 +-
 arch/arm64/boot/dts/qcom/sm6115.dtsi               |  2 +-
 arch/arm64/boot/dts/qcom/sm6125.dtsi               |  2 +-
 arch/arm64/boot/dts/qcom/sm6375.dtsi               |  2 +-
 16 files changed, 96 insertions(+), 16 deletions(-)
---
base-commit: 24469a0e5052ba01a35a15f104717a82b7a4798b
change-id: 20230311-topic-msg_ram-6b83ca812cec

Best regards,
-- 
Konrad Dybcio <konrad.dybcio@...aro.org>