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soc: mediatek: SVS: introduce MTK SVS

From:  Roger Lu <roger.lu-AT-mediatek.com>
To:  Matthias Brugger <matthias.bgg-AT-gmail.com>, Enric Balletbo Serra <eballetbo-AT-gmail.com>, Kevin Hilman <khilman-AT-kernel.org>, Rob Herring <robh+dt-AT-kernel.org>, Nicolas Boichat <drinkcat-AT-google.com>, Stephen Boyd <sboyd-AT-kernel.org>, Philipp Zabel <p.zabel-AT-pengutronix.de>
Subject:  [PATCH v16 0/7] soc: mediatek: SVS: introduce MTK SVS
Date:  Wed, 28 Apr 2021 14:54:33 +0800
Message-ID:  <20210428065440.3704-1-roger.lu@mediatek.com>
Cc:  Fan Chen <fan.chen-AT-mediatek.com>, HenryC Chen <HenryC.Chen-AT-mediatek.com>, YT Lee <yt.lee-AT-mediatek.com>, Xiaoqing Liu <Xiaoqing.Liu-AT-mediatek.com>, Charles Yang <Charles.Yang-AT-mediatek.com>, Angus Lin <Angus.Lin-AT-mediatek.com>, Mark Rutland <mark.rutland-AT-arm.com>, Nishanth Menon <nm-AT-ti.com>, Roger Lu <roger.lu-AT-mediatek.com>, devicetree-AT-vger.kernel.org, linux-arm-kernel-AT-lists.infradead.org, linux-mediatek-AT-lists.infradead.org, linux-kernel-AT-vger.kernel.org, linux-pm-AT-vger.kernel.org, Project_Global_Chrome_Upstream_Group-AT-mediatek.com
Archive-link:  Article

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...
[3] https://patchwork.kernel.org/project/linux-mediatek/patch...

#mt8192 SVS related patches
[1] https://patchwork.kernel.org/patch/11193513/
[2] https://patchwork.kernel.org/project/linux-mediatek/patch...
[3] https://lore.kernel.org/patchwork/patch/1360551/
[4] https://patchwork.kernel.org/project/linux-mediatek/patch...

changes since v15:
- Put (*set_freqs_pct) and (*get_vops) in struct svs_bank because they are part of svs bank's operation
- Add define "SVSB_INIT02_RM_DVTFIXED" and "SVSB_MON_VOLT_IGNORE" to make control clearly.
- Remove unnecessary parenthesis

Roger Lu (7):
  [v16,1/7] dt-bindings: soc: mediatek: add mtk svs dt-bindings
  [v16,2/7] arm64: dts: mt8183: add svs device information
  [v16,3/7] soc: mediatek: SVS: introduce MTK SVS engine
  [v16,4/7] soc: mediatek: SVS: add debug commands
  [v16,5/7] dt-bindings: soc: mediatek: add mt8192 svs dt-bindings
  [v16,6/7] arm64: dts: mt8192: add svs device information
  [v16,7/7] 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                | 2524 +++++++++++++++++
 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




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