On 7/4/2019 9:23 AM, Anson.Huang@xxxxxxx wrote: > From: Anson Huang <Anson.Huang@xxxxxxx> > > Assign highest OPP as suspend OPP to reduce suspend/resume > latency on i.MX8MM. > > Signed-off-by: Anson Huang <Anson.Huang@xxxxxxx> > --- > arch/arm64/boot/dts/freescale/imx8mm.dtsi | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi > index b11fc5e..3a62407 100644 > --- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi > +++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi > @@ -136,6 +136,7 @@ > opp-microvolt = <1000000>; > opp-supported-hw = <0x8>, <0x3>; > clock-latency-ns = <150000>; > + opp-suspend; > }; > }; What if the highest OPP is unavailable due to speed grading? Ideally we should find a way to suspend at the highest *supported* OPP. Maybe the opp-suspend marking could be assigned from imx-cpufreq-dt driver code? -- Regards, Leonard
