Hi, > --- /dev/null > +++ b/arch/arm64/boot/dts/rockchip/rk3576.dtsi > ... > + opp-1416000000 { > + opp-hz = /bits/ 64 <1416000000>; > + opp-microvolt = <725000 725000 950000>; > + opp-microvolt-L1 = <712500 712500 950000>; > + opp-microvolt-L2 = <700000 700000 950000>; > + opp-microvolt-L3 = <700000 700000 950000>; > + opp-microvolt-L4 = <700000 700000 950000>; > + opp-microvolt-L5 = <700000 700000 950000>; > + clock-latency-ns = <40000>; > + }; > ... I'm curious if these frequencies work properly. On the bsp kernel, 'opp-microvolt-L<name>' is used by the PVTM driver, I don't know if it works on the upstream kernel. Sorry but have you tested it with mhz (https://github.com/wtarreau/mhz)? Thanks, Chukun -- 2.25.1