linux-kernel - [PATCH v2 0/4] Mediatek MT6735 main clock and reset drivers

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Date:   Thu, 19 May 2022 18:22:07 +0400
From:   Yassine Oudjana <yassine.oudjana@...il.com>
To:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc:     Yassine Oudjana <y.oudjana@...tonmail.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Tinghan Shen <tinghan.shen@...iatek.com>,
        Chun-Jie Chen <chun-jie.chen@...iatek.com>,
        Weiyi Lu <weiyi.lu@...iatek.com>,
        Ikjoon Jang <ikjn@...omium.org>,
        Miles Chen <miles.chen@...iatek.com>,
        Sam Shih <sam.shih@...iatek.com>,
        Chen-Yu Tsai <wenst@...omium.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Yassine Oudjana <yassine.oudjana@...il.com>,
        devicetree@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        linux-clk@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, ~postmarketos/upstreaming@...ts.sr.ht
Subject: [PATCH v2 0/4] Mediatek MT6735 main clock and reset drivers

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 internal components)
- pericfg (gates and resets for peripherals)

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

Tested on a Samsung Galaxy Grand Prime+ "grandpplte" with MT6737T, a slight
variant of MT6735 with no known differences in the clock controllers. 

Dependencies:
- clk: mediatek: Move to struct clk_hw provider APIs (series)
  https://patchwork.kernel.org/project/linux-mediatek/cover/20220510104804.544597-1-wenst@chromium.org/ 
- Cleanup MediaTek clk reset drivers and support MT8192/MT8195 (series)
  https://patchwork.kernel.org/project/linux-mediatek/cover/20220503093856.22250-1-rex-bc.chen@mediatek.com/
- Export required symbols to compile clk drivers as module (single patch)
  https://patchwork.kernel.org/project/linux-mediatek/patch/20220518111652.223727-7-angelogioacchino.delregno@collabora.com/
- clk: mediatek: Improvements to simple probe/remove and reset controller unregistration
  https://patchwork.kernel.org/project/linux-clk/cover/20220519134728.456643-1-y.oudjana@protonmail.com/

Above are dependencies for patch 4/4 only; DT bindings don't need them.

Changes since v1:
- Rebase on some pending patches (listed as dependencies above).
- Move common clock improvemenets to a separate series (last dependency
  listed above).
- 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[1].
- Correct APLL2 registers in apmixedsys driver (were offset backwards by 0x4).
- Make irtx clock name lower case to match the other clocks.

[1] https://lore.kernel.org/linux-mediatek/CAGXv+5H4gF5GXzfk8mjkG4Kry8uCs1CQbKoViBuc9LC+XdHH=A@mail.gmail.com/

Yassine Oudjana (4):
  dt-bindings: clock: Add Mediatek MT6735 clock bindings
  dt-bindings: reset: Add MT6735 reset bindings
  dt-bindings: arm: mediatek: Add MT6735 clock controller compatibles
  clk: mediatek: Add drivers for MediaTek MT6735 main clock 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  |  235 ++++
 drivers/clk/mediatek/clk-mt6735-infracfg.c    |  205 ++++
 drivers/clk/mediatek/clk-mt6735-pericfg.c     |  301 +++++
 drivers/clk/mediatek/clk-mt6735-topckgen.c    | 1087 +++++++++++++++++
 .../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, 2085 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

-- 
2.36.1