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[v7,0/8] Add cpufreq and cci devfreq for mt8183, and SVS support

Message ID 1594348284-14199-1-git-send-email-andrew-sh.cheng@mediatek.com (mailing list archive)
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Series Add cpufreq and cci devfreq for mt8183, and SVS support | expand

Message

andrew-sh.cheng July 10, 2020, 2:31 a.m. UTC 
From: "Andrew-sh.Cheng" <andrew-sh.cheng@mediatek.com>

MT8183 supports CPU DVFS and CCI DVFS, and LITTLE cpus and CCI are in the same voltage domain.
So, this series is to add drivers to handle the voltage coupling between CPU and CCI DVFS.

For SVS support, need OPP_EVENT_ADJUST_VOLTAGE and corresponding reaction.

Change since v6:
	- Don't resend the patch set "Add required-opps support to devfreq passive gov"
		- https://patchwork.kernel.org/cover/11055499/
	- For modification of governor_passive.c
		- Using dev_pm_qos_read_value() to replace directly accessing.
		- Modify the usage of register_parent_dev_notifier()
	- For modification of mt8183-cci-devfreq.c
		- Using devfreq_recommended_opp() to get devfreq opp item.
	- Add dts of mt8183 cpufreq/cci_devfreq nodes patch into this patch set,
	  which depends on compatible="mediatek,mt8183-cci"

Depend on regulator node patch:
	https://patchwork.kernel.org/cover/11055499/



Andrew-sh.Cheng (7):
  cpufreq: mediatek: Enable clock and regulator
  dt-bindings: devfreq: add compatible for mt8183 cci devfreq
  devfreq: add mediatek cci devfreq
  opp: Modify opp API, dev_pm_opp_get_freq(), find freq in opp, even it
    is disabled
  cpufreq: mediatek: add opp notification for SVS support
  devfreq: mediatek: cci devfreq register opp notification for SVS
    support
  arm64: dts: mediatek: add cpufreq and cci devfreq nodes for mt8183

Saravana Kannan (1):
  PM / devfreq: Add cpu based scaling support to passive_governor

 .../devicetree/bindings/devfreq/mt8183-cci.yaml    |  51 ++++
 arch/arm64/boot/dts/mediatek/mt8183-evb.dts        |  36 +++
 arch/arm64/boot/dts/mediatek/mt8183.dtsi           | 245 +++++++++++++++
 drivers/cpufreq/mediatek-cpufreq.c                 | 122 +++++++-
 drivers/devfreq/Kconfig                            |  12 +
 drivers/devfreq/Makefile                           |   1 +
 drivers/devfreq/governor_passive.c                 | 332 +++++++++++++++++++--
 drivers/devfreq/mt8183-cci-devfreq.c               | 225 ++++++++++++++
 drivers/opp/core.c                                 |   2 +-
 include/linux/devfreq.h                            |  29 +-
 10 files changed, 1026 insertions(+), 29 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/devfreq/mt8183-cci.yaml
 create mode 100644 drivers/devfreq/mt8183-cci-devfreq.c