[v4,0/2] MediaTek MT6735 main clock and reset drivers

Message

Yassine Oudjana June 26, 2024, 8:24 p.m. UTC

From: Yassine Oudjana <[e-mail]>

These patches are part of a larger effort to support the MT6735 SoC family in
mainline Linux. More patches (unsent or sent and pending review or revision) can
be found here[1].

This series adds support for the main clock and reset controllers on the
Mediatek MT6735 SoC:
- apmixedsys (global PLLs)
- topckgen (global divisors and muxes)
- infracfg (gates and resets for infrastructure blocks)
- pericfg (gates and resets for peripherals)

MT6735 has other more specialized clock/reset controllers, support for which is
not included in this series:
- mfgcfg (GPU)
- imgsys (camera)
- mmsys (display)
- vdecsys (video decoder)
- vencsys (video encoder)
- audsys (audio)

Changes since v3:
- Squash DT binding patches.
- Use mtk_clk_simple_probe/mtk_clk_simple_remove for topckgen.
- Add MODULE_DEVICE_TABLE in all drivers.
Changes since v2:
- Add "CLK_" prefix to infracfg and pericfg clock definitions to avoid possible
  clashes with reset bindings.
- Replace "_RST" suffix with "RST_" prefix to maintain consistency with clock
  bindings.
- Use macros to define clocks.
- Abandon mtk_clk_simple_probe/mtk_clk_simple_remove in favor of custom
  functions in apmixedsys and topckgen drivers for the time being. 
- Capitalize T in MediaTek in MODULE_DESCRIPTION.
Changes since v1:
- Rebase on some pending patches.
- Move common clock improvements to a separate series.
- Use mtk_clk_simple_probe/remove after making them support several clock types
  in said series.
- Combine all 4 drivers into one patch, and use one Kconfig symbol for all
  following a conversation seen on a different series[2].
- Correct APLL2 registers in apmixedsys driver (were offset backwards by 0x4).
- Make irtx clock name lower case to match the other clocks.

[1] https://gitlab.com/mt6735-mainline/linux/-/commits/mt6735-staging
[2] https://lore.kernel.org/linux-mediatek/CAGXv+5H4gF5GXzfk8mjkG4Kry8uCs1CQbKoViBuc9LC+XdHH=[e-mail]/

Yassine Oudjana (2):
  dt-bindings: clock: Add MediaTek MT6735 clock and reset bindings
  clk: mediatek: Add drivers for MediaTek MT6735 main clock and reset
    drivers

 .../arm/mediatek/mediatek,infracfg.yaml       |   8 +-
 .../arm/mediatek/mediatek,pericfg.yaml        |   1 +
 .../bindings/clock/mediatek,apmixedsys.yaml   |   4 +-
 .../bindings/clock/mediatek,topckgen.yaml     |   4 +-
 MAINTAINERS                                   |  16 +
 drivers/clk/mediatek/Kconfig                  |   9 +
 drivers/clk/mediatek/Makefile                 |   1 +
 drivers/clk/mediatek/clk-mt6735-apmixedsys.c  | 138 ++++++
 drivers/clk/mediatek/clk-mt6735-infracfg.c    |  79 ++++
 drivers/clk/mediatek/clk-mt6735-pericfg.c     |  92 ++++
 drivers/clk/mediatek/clk-mt6735-topckgen.c    | 394 ++++++++++++++++++
 .../clock/mediatek,mt6735-apmixedsys.h        |  16 +
 .../clock/mediatek,mt6735-infracfg.h          |  25 ++
 .../clock/mediatek,mt6735-pericfg.h           |  37 ++
 .../clock/mediatek,mt6735-topckgen.h          |  79 ++++
 .../reset/mediatek,mt6735-infracfg.h          |  31 ++
 .../reset/mediatek,mt6735-pericfg.h           |  31 ++
 17 files changed, 960 insertions(+), 5 deletions(-)
 create mode 100644 drivers/clk/mediatek/clk-mt6735-apmixedsys.c
 create mode 100644 drivers/clk/mediatek/clk-mt6735-infracfg.c
 create mode 100644 drivers/clk/mediatek/clk-mt6735-pericfg.c
 create mode 100644 drivers/clk/mediatek/clk-mt6735-topckgen.c
 create mode 100644 include/dt-bindings/clock/mediatek,mt6735-apmixedsys.h
 create mode 100644 include/dt-bindings/clock/mediatek,mt6735-infracfg.h
 create mode 100644 include/dt-bindings/clock/mediatek,mt6735-pericfg.h
 create mode 100644 include/dt-bindings/clock/mediatek,mt6735-topckgen.h
 create mode 100644 include/dt-bindings/reset/mediatek,mt6735-infracfg.h
 create mode 100644 include/dt-bindings/reset/mediatek,mt6735-pericfg.h