[PATCH v2 1/3] ARM: dts: imx6: phycore-som: fix arm and soc minimum voltage

Marco Felsch m.felsch at pengutronix.de
Wed Jan 8 02:42:25 PST 2020


On 20-01-08 10:34, Russell King - ARM Linux admin wrote:
> On Wed, Jan 08, 2020 at 11:10:55AM +0100, Marco Felsch wrote:
> > The current set minimum voltage of 730000mV seems to be wrong. I don't
> 
> mV = milli-volt, /1000th of a volt. So you just said 730V.
> µV or uV = micro-volt, which I think is what you mean here.

Arg.. you are right thanks for covering that.

> > know the document which specifies that but the imx6qdl datasheets says
> > that the minimum voltage should be 0.925V for VDD_ARM (LDO bypassed,
> > lowest opp) and 1.15V for VDD_SOC (LDO bypassed, lowest opp).
> > 
> > Fixes: ddec5d1c0047 ("ARM: dts: imx6: Add initial support for phyCORE-i.MX 6 SOM")
> > Signed-off-by: Marco Felsch <m.felsch at pengutronix.de>
> > ---
> > v2:
> > - use ldo bypassed values
> > - adapt commit message
> > 
> >  arch/arm/boot/dts/imx6qdl-phytec-phycore-som.dtsi | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> > 
> > diff --git a/arch/arm/boot/dts/imx6qdl-phytec-phycore-som.dtsi b/arch/arm/boot/dts/imx6qdl-phytec-phycore-som.dtsi
> > index 6486df3e2942..f23eef1e54e0 100644
> > --- a/arch/arm/boot/dts/imx6qdl-phytec-phycore-som.dtsi
> > +++ b/arch/arm/boot/dts/imx6qdl-phytec-phycore-som.dtsi
> > @@ -107,14 +107,14 @@
> >  		regulators {
> >  			vdd_arm: buck1 {
> >  				regulator-name = "vdd_arm";
> > -				regulator-min-microvolt = <730000>;
> > +				regulator-min-microvolt = <925000>;
> >  				regulator-max-microvolt = <1380000>;
> >  				regulator-always-on;
> >  			};
> >  
> >  			vdd_soc: buck2 {
> >  				regulator-name = "vdd_soc";
> > -				regulator-min-microvolt = <730000>;
> > +				regulator-min-microvolt = <1150000>;
> >  				regulator-max-microvolt = <1380000>;
> >  				regulator-always-on;
> >  			};
> > -- 
> > 2.20.1
> > 
> > 
> > _______________________________________________
> > linux-arm-kernel mailing list
> > linux-arm-kernel at lists.infradead.org
> > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
> > 
> 
> -- 
> RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
> FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps up
> According to speedtest.net: 11.9Mbps down 500kbps up
> 

-- 
Pengutronix e.K.                           |                             |
Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |



More information about the linux-arm-kernel mailing list