linux-kernel - [PATCH v19 0/7] soc: mediatek: SVS: introduce MTK SVS

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Message-ID: <20210702031214.21597-1-roger.lu@mediatek.com>
Date:   Fri, 2 Jul 2021 11:12:07 +0800
From:   Roger Lu <roger.lu@...iatek.com>
To:     Matthias Brugger <matthias.bgg@...il.com>,
        Enric Balletbo Serra <eballetbo@...il.com>,
        Kevin Hilman <khilman@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Nicolas Boichat <drinkcat@...gle.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>
CC:     Fan Chen <fan.chen@...iatek.com>,
        HenryC Chen <HenryC.Chen@...iatek.com>,
        YT Lee <yt.lee@...iatek.com>,
        Xiaoqing Liu <Xiaoqing.Liu@...iatek.com>,
        Charles Yang <Charles.Yang@...iatek.com>,
        Angus Lin <Angus.Lin@...iatek.com>,
        Mark Rutland <mark.rutland@....com>,
        Nishanth Menon <nm@...com>, Roger Lu <roger.lu@...iatek.com>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <linux-pm@...r.kernel.org>,
        <Project_Global_Chrome_Upstream_Group@...iatek.com>,
        Guenter Roeck <linux@...ck-us.net>
Subject: [PATCH v19 0/7] soc: mediatek: SVS: introduce MTK SVS

1. SVS driver uses OPP adjust event in [1] to update OPP table voltage part.
2. SVS driver gets thermal/GPU device by node [2][3] and CPU device by get_cpu_device().
After retrieving subsys device, SVS driver calls device_link_add() to make sure probe/suspend callback priority.
3. SVS dts refers to reset controller [4] to help reset SVS HW.

#mt8183 SVS related patches
[1] https://patchwork.kernel.org/patch/11193513/
[2] https://patchwork.kernel.org/project/linux-mediatek/patch/20201013102358.22588-2-michael.kao@mediatek.com/
[3] https://patchwork.kernel.org/project/linux-mediatek/patch/20200306041345.259332-3-drinkcat@chromium.org/

#mt8192 SVS related patches
[1] https://patchwork.kernel.org/patch/11193513/
[2] https://patchwork.kernel.org/project/linux-mediatek/patch/20201223074944.2061-1-michael.kao@mediatek.com/
[3] https://lore.kernel.org/patchwork/patch/1360551/
[4] https://patchwork.kernel.org/project/linux-mediatek/patch/20200817030324.5690-5-crystal.guo@mediatek.com/

changes since v18:
- Add edge case handling in svs_set_freqs_pct_v3() when turn_pt is 0.
If we don't add this handling, SVS HIGH bank will fill FREQPCT74 / FREQPCT30 with 0 and SVS controller won't run normally.
- Remove redundant SVSB_MON_VOLT_IGNORE flag from svs_mt8192_banks[]'s low bank configuration.

Roger Lu (7):
  [v19,1/7] dt-bindings: soc: mediatek: add mtk svs dt-bindings
  [v19,2/7] arm64: dts: mt8183: add svs device information
  [v19,3/7] soc: mediatek: SVS: introduce MTK SVS engine
  [v19,4/7] soc: mediatek: SVS: add debug commands
  [v19,5/7] dt-bindings: soc: mediatek: add mt8192 svs dt-bindings
  [v19,6/7] arm64: dts: mt8192: add svs device information
  [v19,7/7] soc: mediatek: SVS: add mt8192 SVS GPU driver

 .../bindings/soc/mediatek/mtk-svs.yaml        |   92 +
 arch/arm64/boot/dts/mediatek/mt8183.dtsi      |   15 +
 arch/arm64/boot/dts/mediatek/mt8192.dtsi      |   34 +
 drivers/soc/mediatek/Kconfig                  |   10 +
 drivers/soc/mediatek/Makefile                 |    1 +
 drivers/soc/mediatek/mtk-svs.c                | 2527 +++++++++++++++++
 6 files changed, 2679 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/mediatek/mtk-svs.yaml
 create mode 100644 drivers/soc/mediatek/mtk-svs.c