linux-kernel - [PATCH v14 0/7] soc: mediatek: SVS: introduce MTK SVS

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Date:   Thu, 25 Mar 2021 10:51:07 +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>
Subject: [PATCH v14 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 does
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 v13:
- Fix "mtk-svs.yaml: properties:nvmem-cells:maxItems: False schema does not allow 2"
- Remove wrong maintainer "Nishanth Menon <nm@...com>"
- When turn_pt = 0, SVS HIGH bank fills FREQPCT74 / FREQPCT30 with 0 and SVS controller won't run normally. Therefore, we initialize SVS HIGH bank's FREQPCT30 with svsb->freqs_pct[0] to avoid this issue.
- Change SVS GPU opp count back from 14 to 16 because GPU DVFS has a better solution

Roger Lu (7):
  [v14,1/7]: dt-bindings: soc: mediatek: add mtk svs dt-bindings
  [v14,2/7]: arm64: dts: mt8183: add svs device information
  [v14,3/7]: soc: mediatek: SVS: introduce MTK SVS engine
  [v14,4/7]: soc: mediatek: SVS: add debug commands
  [v14,5/7]: dt-bindings: soc: mediatek: add mt8192 svs dt-bindings
  [v14,6/7]: arm64: dts: mt8192: add svs device information
  [v14,7/7]: soc: mediatek: SVS: add mt8192 SVS GPU driver

 .../bindings/soc/mediatek/mtk-svs.yaml        |   92 +
 arch/arm64/boot/dts/mediatek/mt8183.dtsi      |   18 +
 arch/arm64/boot/dts/mediatek/mt8192.dtsi      |   34 +
 drivers/soc/mediatek/Kconfig                  |   10 +
 drivers/soc/mediatek/Makefile                 |    1 +
 drivers/soc/mediatek/mtk-svs.c                | 2495 +++++++++++++++++
 6 files changed, 2650 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/mediatek/mtk-svs.yaml
 create mode 100644 drivers/soc/mediatek/mtk-svs.c