Cpufreq is a DVFS driver used for power saving to scale the clock frequency
and supply the voltage for CPUs. This series do some cleanup for MediaTek
cpufreq drivers and add support for MediaTek SVS[2] and MediaTek CCI
devfreq[3] which are supported in MT8183 and MT8186.

Changes for V2:
1. Drop the modification of transforming cpufreq-mediatek into yaml and
   only add the MediaTek CCI property for MediaTek cpufreq.
2. Split the original patches into several patches.

Reference series:
[1]: V1 of this series is present by Jia-Wei Chang.
     message-id:20220307122151.11666-1-jia-wei.chang@mediatek.com

[2]: The MediaTek CCI devfreq driver is introduced in another series.
     message-id:20220307122513.11822-1-jia-wei.chang@mediatek.com

[3]: The MediaTek SVS driver is introduced in another series.
     message-id:20220221063939.14969-1-roger.lu@mediatek.com

Andrew-sh.Cheng (1):
  cpufreq: mediatek: Add opp notification for SVS support

Jia-Wei Chang (13):
  dt-bindings: cpufreq: mediatek: Add MediaTek CCI property
  cpufreq: mediatek: Use module_init and add module_exit
  cpufreq: mediatek: Cleanup variables and error handling in mtk_cpu_dvfs_info_init()
  cpufreq: mediatek: Remove unused headers
  cpufreq: mediatek: Enable clocks and regulators
  cpufreq: mediatek: Record previous target vproc value
  cpufreq: mediatek: Move voltage limits to platform data
  cpufreq: mediatek: Add .get function
  cpufreq: mediatek: Make sram regulator optional
  cpufreq: mediatek: Update logic of voltage_tracking()
  cpufreq: mediatek: Use maximum voltage in init stage
  cpufreq: mediatek: Link CCI device to CPU
  cpufreq: mediatek: Add support for MT8186

Rex-BC Chen (1):
  cpufreq: mediatek: Use device print to show logs

 .../bindings/cpufreq/cpufreq-mediatek.txt     |   4 +
 drivers/cpufreq/mediatek-cpufreq.c            | 609 ++++++++++++------
 2 files changed, 401 insertions(+), 212 deletions(-)

-- 
2.18.0

Rex-BC Chen <rex-bc.chen@mediatek.com> writes:

> Cpufreq is a DVFS driver used for power saving to scale the clock frequency
> and supply the voltage for CPUs. This series do some cleanup for MediaTek
> cpufreq drivers and add support for MediaTek SVS[2] and MediaTek CCI
> devfreq[3] which are supported in MT8183 and MT8186.

There's no upstream DT for MT8186 and there are no OPPs defined in the
upstream DT for MT8183.

In order to test this on mainline, could you provide a patch for MT8183
that adds OPPs to the DT so this can be tested with mainline?

Thanks,

Kevin

On Sat, Apr 9, 2022 at 5:11 AM Kevin Hilman <khilman@baylibre.com> wrote:
>
> Rex-BC Chen <rex-bc.chen@mediatek.com> writes:
>
> > Cpufreq is a DVFS driver used for power saving to scale the clock frequency
> > and supply the voltage for CPUs. This series do some cleanup for MediaTek
> > cpufreq drivers and add support for MediaTek SVS[2] and MediaTek CCI
> > devfreq[3] which are supported in MT8183 and MT8186.
>
> There's no upstream DT for MT8186 and there are no OPPs defined in the
> upstream DT for MT8183.
>
> In order to test this on mainline, could you provide a patch for MT8183
> that adds OPPs to the DT so this can be tested with mainline?
>
The DT change used in the downstream kernel is from here:
https://patchwork.kernel.org/project/linux-mediatek/patch/1616499241-4906-9-git-send-email-andrew-sh.cheng@mediatek.com/
Might need some update (eg. add the cci property in cpu) though.
Rex, you can also include the 8183 DT change in the next version since
most of the mt8183 dts are in the mainline.

Thanks

> Thanks,
>
> Kevin