[GIT PULL] devfreq next for 5.20

[Chanwoo Choi]

Dear Rafael,

This is devfreq-next pull request for v5.20-rc1. I add detailed description of
this pull request on the following tag. Please pull devfreq with
following updates.

Best Regards,
Chanwoo Choi


The following changes since commit 32346491ddf24599decca06190ebca03ff9de7f8:

  Linux 5.19-rc6 (2022-07-10 14:40:51 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/linux.git tags/devfreq-next-for-5.20

for you to fetch changes up to 53f853d55e312a639eaa910154248ce06eb754ac:

  PM / devfreq: tegra30: Add error message for devm_devfreq_add_device() (2022-07-15 11:40:08 +0900)
----------------------------------------------------------------

Update devfreq next for v5.20

Detailed description for this pull request:
1. Add new Mediatek CCI (Cache Coherent Interconnect) devfreq driver
- Add new MediaTek Cache Coherent Interconnect (CCI) devfreq drviver
  which supports the dynamic voltage and clock scaling.
  This driver uses the passive devfreq governor to get target frequencies
  and adjust voltages because it depends on MediaTek cpu frequency
  driver. In MT8183 and MT8186, the MediaTek CCI is supplied
  by the same regulators with the little core CPUs.

2. Update the devfreq drivers
- Convert the Samsung Exynos SoC Bus bindings to DT schema of exynos-bus.c

- Remove kernel-doc warnings by adding the description for unused
  fucntio parameters on devfreq core.

- Use NULL to pass a null pointer rather than zero according to function
  propotype on imx-bus.c

- Print error message instead of error interger value on tegra30-devfreq.c

----------------------------------------------------------------
Colin Ian King (1):
      PM / devfreq: imx-bus: use NULL to pass a null pointer rather than zero

Dmitry Osipenko (1):
      PM / devfreq: tegra30: Add error message for devm_devfreq_add_device()

Johnson Wang (2):
      dt-bindings: interconnect: Add MediaTek CCI dt-bindings
      PM / devfreq: mediatek: Introduce MediaTek CCI devfreq driver

Krzysztof Kozlowski (1):
      dt-bindings: interconnect: samsung,exynos-bus: convert to dtschema

Mauro Carvalho Chehab (1):
      PM / devfreq: shut up kernel-doc warnings

 .../devicetree/bindings/devfreq/exynos-bus.txt     | 488 ---------------------
 .../bindings/interconnect/mediatek,cci.yaml        | 141 ++++++
 .../bindings/interconnect/samsung,exynos-bus.yaml  | 290 ++++++++++++
 MAINTAINERS                                        |   3 +-
 drivers/devfreq/Kconfig                            |  10 +
 drivers/devfreq/Makefile                           |   1 +
 drivers/devfreq/devfreq.c                          |   4 +
 drivers/devfreq/imx-bus.c                          |   2 +-
 drivers/devfreq/mtk-cci-devfreq.c                  | 440 +++++++++++++++++++
 drivers/devfreq/tegra30-devfreq.c                  |   4 +-
 10 files changed, 892 insertions(+), 491 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/devfreq/exynos-bus.txt
 create mode 100644 Documentation/devicetree/bindings/interconnect/mediatek,cci.yaml
 create mode 100644 Documentation/devicetree/bindings/interconnect/samsung,exynos-bus.yaml
 create mode 100644 drivers/devfreq/mtk-cci-devfreq.c