[PATCH 2/2] DTS: dra7: Add "opp_high" opp node to support 1.5 GHz SoC operation

[Lukasz Majewski]

Hi Dave,

> On 02/03/2017 09:24 AM, Lukasz Majewski wrote:
> > The "opp_high" property brings support for 1.5 GHz CPU frequency
> > for TI's am57xx line of processors.
> >
> > Signed-off-by: Lukasz Majewski <lukma at denx.de>
> > ---
> >  arch/arm/boot/dts/dra7.dtsi | 5 +++++
> >  1 file changed, 5 insertions(+)
> >
> 
> This can't be blindly enabled for all am57xx SoCs, there is a
> forthcoming ti-cpufreq [1] driver that is needed that will decided
> which OPPs can and cannot be enabled for the specific variant in use.

Do you know if there is ongoing work on using Avs0 voltage (encoded in
efuse) to control the per SoC PMIC voltage value when switching to
opp_high (1.5 GHz)?


> 
> Regards,
> Dave
> 
> [1] http://www.spinics.net/lists/devicetree/msg158967.html
> 
> > diff --git a/arch/arm/boot/dts/dra7.dtsi
> > b/arch/arm/boot/dts/dra7.dtsi index a860a56..5e678cd 100644
> > --- a/arch/arm/boot/dts/dra7.dtsi
> > +++ b/arch/arm/boot/dts/dra7.dtsi
> > @@ -108,6 +108,11 @@
> >  			opp-hz = /bits/ 64 <1176000000>;
> >  			opp-microvolt = <1160000 885000 1160000>;
> >  		};
> > +
> > +		opp_high at 1500000000 {
> > +			opp-hz = /bits/ 64 <1500000000>;
> > +			opp-microvolt = <1210000 950000 1250000>;
> > +		};
> >  	};
> >
> >  	/*
> >
> 




Best regards,

Lukasz Majewski

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