Hi-- On 4/15/20 4:18 AM, Anthony Huang wrote: > Mediatek MMDVFS driver is used to set clk for Mediatek multimedia > hardwares. The MMDVFS registers a regulator callback and multimedia hardware. > hardwares set voltage by regulator API and then this callback will be hardware > triggered. The MMDVFS will get current opp level from opp table according > to the voltage, and then the MMDVFS sets all the clock MUXs to the clock > sources according to the opp level. > > On some platforms, both clock MUX and frequency hopping need to be used > together. The MMDVFS supports these two clock setting methods and the > execution sequence of them can be configured in DTS. > > Signed-off-by: Anthony Huang <anthony.huang@xxxxxxxxxxxx> > --- > drivers/soc/mediatek/Kconfig | 9 ++ > drivers/soc/mediatek/Makefile | 1 + > drivers/soc/mediatek/mtk-mmdvfs.c | 312 +++++++++++++++++++++++++++++++++++++ > 3 files changed, 322 insertions(+) > create mode 100644 drivers/soc/mediatek/mtk-mmdvfs.c > > diff --git a/drivers/soc/mediatek/Kconfig b/drivers/soc/mediatek/Kconfig > index 2114b56..e92762b 100644 > --- a/drivers/soc/mediatek/Kconfig > +++ b/drivers/soc/mediatek/Kconfig > @@ -44,4 +44,13 @@ config MTK_SCPSYS > Say yes here to add support for the MediaTek SCPSYS power domain > driver. > > +config MTK_MMDVFS > + tristate "MediaTek MMDVFS Support" > + depends on ARCH_MEDIATEK || COMPILE_TEST > + help > + Say yes here to add support for the MediaTek Multimedia DVFS (MMDVFS) > + driver. The MMDVFS is used to set clk for Mediatek multimedia hardwares hardware, > + , such as display, camera, mdp and video codec. Say no if your device ^drop that comma. > + does not need to do DVFS for Multimedia hardwares. hardware. > + > endmenu thanks. -- ~Randy
