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soc: mediatek: SVS: introduce MTK SVS engine

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The Smart Voltage Scaling(SVS) engine is a piece of hardware
which calculates suitable SVS bank voltages to OPP voltage table.
Then, DVFS driver could apply those SVS bank voltages to PMIC/Buck
when receiving OPP_EVENT_ADJUST_VOLTAGE.

Signed-off-by: Roger Lu <roger.lu@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Link: https://lore.kernel.org/r/20220516004311.18358-4-roger.lu@mediatek.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
This commit is contained in:
Roger Lu 2022-05-16 08:43:07 +08:00 committed by Matthias Brugger
parent d969f2171e
commit 681a02e950
3 changed files with 1428 additions and 0 deletions
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10
drivers/soc/mediatek/Kconfig
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@ -73,4 +73,14 @@ config MTK_MMSYS
Say yes here to add support for the MediaTek Multimedia
Subsystem (MMSYS).
config MTK_SVS
tristate "MediaTek Smart Voltage Scaling(SVS)"
depends on MTK_EFUSE && NVMEM
help
The Smart Voltage Scaling(SVS) engine is a piece of hardware
which has several controllers(banks) for calculating suitable
voltage to different power domains(CPU/GPU/CCI) according to
chip process corner, temperatures and other factors. Then DVFS
driver could apply SVS bank voltage to PMIC/Buck.
endmenu

1
drivers/soc/mediatek/Makefile
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@ -7,3 +7,4 @@ obj-$(CONFIG_MTK_SCPSYS) += mtk-scpsys.o
obj-$(CONFIG_MTK_SCPSYS_PM_DOMAINS) += mtk-pm-domains.o
obj-$(CONFIG_MTK_MMSYS) += mtk-mmsys.o
obj-$(CONFIG_MTK_MMSYS) += mtk-mutex.o
obj-$(CONFIG_MTK_SVS) += mtk-svs.o

1417
drivers/soc/mediatek/mtk-svs.c Normal file
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