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

From: Roger Lu
Date: Wed Mar 24 2021 - 22:52:29 EST


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@xxxxxxxxxxxx/
[3] https://patchwork.kernel.org/project/linux-mediatek/patch/20200306041345.259332-3-drinkcat@xxxxxxxxxxxx/

#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@xxxxxxxxxxxx/
[3] https://lore.kernel.org/patchwork/patch/1360551/
[4] https://patchwork.kernel.org/project/linux-mediatek/patch/20200817030324.5690-5-crystal.guo@xxxxxxxxxxxx/

changes since v13:
- Fix "mtk-svs.yaml: properties:nvmem-cells:maxItems: False schema does not allow 2"
- Remove wrong maintainer "Nishanth Menon <nm@xxxxxx>"
- 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