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[v2,00/26] ARM: qcom: apq8064: support CPU frequency scaling

Message ID 20230625202547.174647-1-dmitry.baryshkov@linaro.org
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Series ARM: qcom: apq8064: support CPU frequency scaling | expand

Message

Dmitry Baryshkov June 25, 2023, 8:25 p.m. UTC 
Implement CPUFreq support for one of the oldest supported Qualcomm
platforms, APQ8064. Each core has independent power and frequency
control. Additionally the L2 cache is scaled to follow the CPU
frequencies (failure to do so results in strange semi-random crashes).

Core voltage is controlled through the SAW2 devices, one for each core.
The L2 has two regulators, vdd-mem and vdd-dig.

Changes since v1:
- Added separate Krait L2 cache device driver
- Moved vdd-mem and vdd-dig scaling to the L2 cache device (Christian,
  Stephen Gerhold)
- Fixed the 'INTERCONNECT' in the guarding define for krait-cc bindings
  (Stephen Boyd)
- Made SAW2's regulator property -> node handling clear (Krzysztof)
- Dropped the 'regulator' property from all SAW2 devices.

Dmitry Baryshkov (26):
  dt-bindings: opp: opp-v2-kryo-cpu: support Qualcomm Krait SoCs
  dt-bindings: soc: qcom: merge qcom,saw2.txt into qcom,spm.yaml
  dt-bindings: soc: qcom: qcom,saw2: define optional regulator node
  dt-bindings: clock: qcom,krait-cc: Krait core clock controller
  dt-bindings: cache: describe L2 cache on Qualcomm Krait platforms
  interconnect: icc-clk: add support for scaling using OPP
  clk: qcom: krait-cc: rewrite driver to use clk_hw instead of clk
  soc: qcom: spm: add support for voltage regulator
  cpufreq: qcom-nvmem: create L2 cache device
  cpufreq: qcom-nvmem: also accept operating-points-v2-krait-cpu
  cpufreq: qcom-nvmem: drop pvs_ver for format a fuses
  cpufreq: qcom-nvmem: provide separate configuration data for apq8064
  soc: qcom: Add driver for Qualcomm Krait L2 cache scaling
  ARM: dts: qcom: apq8064: rename SAW nodes to power-manager
  ARM: dts: qcom: apq8064: declare SAW2 regulators
  ARM: dts: qcom: apq8064: add L2 cache scaling
  ARM: dts: qcom: apq8064: add simple CPUFreq support
  ARM: dts: qcom: apq8064: provide voltage scaling tables
  ARM: dts: qcom: apq8064: enable passive CPU cooling
  ARM: dts: qcom: apq8064-asus-nexus7-flo: constraint cpufreq regulators
  ARM: dts: qcom: apq8064-ifc6410: constraint cpufreq regulators
  ARM: dts: qcom: msm8960: declare SAW2 regulators
  ARM: dts: qcom: apq8084: drop 'regulator' property from SAW2 device
  ARM: dts: qcom: msm8974: drop 'regulator' property from SAW2 device
  ARM: dts: qcom: ipq4019: drop 'regulator' property from SAW2 devices
  ARM: dts: qcom: ipq8064: drop 'regulator' property from SAW2 devices

 .../devicetree/bindings/arm/msm/qcom,saw2.txt |  58 --
 .../bindings/cache/qcom,krait-l2-cache.yaml   |  75 ++
 .../bindings/opp/opp-v2-kryo-cpu.yaml         |  12 +-
 .../qcom/{qcom,spm.yaml => qcom,saw2.yaml}    |  39 +-
 .../dts/qcom/qcom-apq8064-asus-nexus7-flo.dts |  14 +-
 .../boot/dts/qcom/qcom-apq8064-ifc6410.dts    |  18 +-
 arch/arm/boot/dts/qcom/qcom-apq8064.dtsi      | 671 +++++++++++++++++-
 arch/arm/boot/dts/qcom/qcom-apq8084.dtsi      |   1 -
 arch/arm/boot/dts/qcom/qcom-ipq4019.dtsi      |   5 -
 arch/arm/boot/dts/qcom/qcom-ipq8064.dtsi      |   2 -
 arch/arm/boot/dts/qcom/qcom-msm8960.dtsi      |  12 +-
 arch/arm/boot/dts/qcom/qcom-msm8974.dtsi      |   1 -
 drivers/clk/qcom/krait-cc.c                   | 141 ++--
 drivers/cpufreq/qcom-cpufreq-nvmem.c          |  76 +-
 drivers/interconnect/icc-clk.c                |  13 +-
 drivers/soc/qcom/Kconfig                      |   9 +
 drivers/soc/qcom/Makefile                     |   1 +
 drivers/soc/qcom/krait-l2-cache.c             | 190 +++++
 drivers/soc/qcom/spm.c                        | 205 +++++-
 include/dt-bindings/clock/qcom,krait-cc.h     |  17 +
 include/dt-bindings/soc/qcom,krait-l2-cache.h |  12 +
 include/linux/interconnect-clk.h              |   1 +
 include/soc/qcom/spm.h                        |   9 +
 23 files changed, 1403 insertions(+), 179 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/arm/msm/qcom,saw2.txt
 create mode 100644 Documentation/devicetree/bindings/cache/qcom,krait-l2-cache.yaml
 rename Documentation/devicetree/bindings/soc/qcom/{qcom,spm.yaml => qcom,saw2.yaml} (57%)
 create mode 100644 drivers/soc/qcom/krait-l2-cache.c
 create mode 100644 include/dt-bindings/clock/qcom,krait-cc.h
 create mode 100644 include/dt-bindings/soc/qcom,krait-l2-cache.h