Re: [PATCH v4 00/16] soc: mediatek: pm-domains: Add new driver for SCPSYS power domains controller

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On 30/10/2020 12:36, Enric Balletbo i Serra wrote:
Dear all,

This is a new driver with the aim to deprecate the mtk-scpsys driver.
The problem with that driver is that, in order to support more Mediatek
SoCs you need to add some logic to handle properly the power-up
sequence of newer Mediatek SoCs, doesn't handle parent-child power
domains and need to hardcode all the clocks in the driver itself. The
result is that the driver is getting bigger and bigger every time a
new SoC needs to be supported.

All this information can be getted from a properly defined binding, so
can be cleaner and smaller, hence, we implemented a new driver. For
now, only MT8173 and MT8183 is supported but should be fairly easy to
add support for new SoCs.


All patches are pushed:
DT-bindings went to v5.10-next/pm-domains-stable as they are needed by both soc and dts64 branch.

Regards,
Matthias

Three important notes:

1. This patch depends now on [1] to build correctly.

2. Support for MT8183 is not ready to land yet because has some
    dependencies, i.e mmsys support is still missing.

3. Support for MT8192. I picked the patches [2] from Weiyi Lu and
    adapted to this new series. I posted only for reference due that this
    new version has some changes that affects that patchset.

Only patches from 1 to 9 are ready, the others are provided for reference and test.

[1] https://lore.kernel.org/patchwork/patch/1328096/
[2] https://patchwork.kernel.org/project/linux-mediatek/list/?series=368821

Best regards,
   Enric

Enric Balletbo i Serra (5):
   dt-bindings: power: Add bindings for the Mediatek SCPSYS power domains
     controller
   soc: mediatek: Add MediaTek SCPSYS power domains
   arm64: dts: mediatek: Add mt8173 power domain controller
   dt-bindings: power: Add MT8183 power domains
   arm64: dts: mediatek: Add smi_common node for MT8183

Matthias Brugger (8):
   soc: mediatek: pm-domains: Add bus protection protocol
   soc: mediatek: pm_domains: Make bus protection generic
   soc: mediatek: pm-domains: Add SMI block as bus protection block
   soc: mediatek: pm-domains: Add extra sram control
   soc: mediatek: pm-domains: Add subsystem clocks
   soc: mediatek: pm-domains: Allow bus protection to ignore clear ack
   soc: mediatek: pm-domains: Add support for mt8183
   arm64: dts: mediatek: Add mt8183 power domains controller

Weiyi Lu (3):
   dt-bindings: power: Add MT8192 power domains
   soc: mediatek: pm-domains: Add default power off flag
   soc: mediatek: pm-domains: Add support for mt8192

  .../power/mediatek,power-controller.yaml      | 293 +++++++++
  arch/arm64/boot/dts/mediatek/mt8173.dtsi      | 164 +++--
  arch/arm64/boot/dts/mediatek/mt8183.dtsi      | 172 +++++
  drivers/soc/mediatek/Kconfig                  |  12 +
  drivers/soc/mediatek/Makefile                 |   1 +
  drivers/soc/mediatek/mt8173-pm-domains.h      |  94 +++
  drivers/soc/mediatek/mt8183-pm-domains.h      | 221 +++++++
  drivers/soc/mediatek/mt8192-pm-domains.h      | 292 +++++++++
  drivers/soc/mediatek/mtk-infracfg.c           |   5 -
  drivers/soc/mediatek/mtk-pm-domains.c         | 614 ++++++++++++++++++
  drivers/soc/mediatek/mtk-pm-domains.h         | 102 +++
  include/dt-bindings/power/mt8183-power.h      |  26 +
  include/dt-bindings/power/mt8192-power.h      |  32 +
  include/linux/soc/mediatek/infracfg.h         | 107 +++
  14 files changed, 2081 insertions(+), 54 deletions(-)
  create mode 100644 Documentation/devicetree/bindings/power/mediatek,power-controller.yaml
  create mode 100644 drivers/soc/mediatek/mt8173-pm-domains.h
  create mode 100644 drivers/soc/mediatek/mt8183-pm-domains.h
  create mode 100644 drivers/soc/mediatek/mt8192-pm-domains.h
  create mode 100644 drivers/soc/mediatek/mtk-pm-domains.c
  create mode 100644 drivers/soc/mediatek/mtk-pm-domains.h
  create mode 100644 include/dt-bindings/power/mt8183-power.h
  create mode 100644 include/dt-bindings/power/mt8192-power.h




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