Hi Nishant, On 10/21/2014 05:38 PM, Nishanth Menon wrote: > DRA7 Data Manual (SPRS857L - August 2014) section 4.1.1 states: "All > unused power supply balls must be supplied with the voltages specified > in the Section 5.2, Recommended Operating Conditions". > > This implies that all unused voltage rails for Vayu can never be > switched off even if the hardware blocks inside that voltage domain is > unused. Switching off these unused rails may result in stability issues > on other domains and increased leakage and power-on-hour impacts. > > J6eco-evm dts file already considers this, however j6evm-dts file needs > to be fixed to consider this constraint of the SoC. > > Signed-off-by: Nishanth Menon <nm@xxxxxx> Acked-by: Roger Quadros <rogerq@xxxxxx> I'm assuming that vddshv8 (MMC1 power group) can be switched off. cheers, -roger > --- > > Patch is based on v3.18-rc1 tag. > > arch/arm/boot/dts/dra7-evm.dts | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/arch/arm/boot/dts/dra7-evm.dts b/arch/arm/boot/dts/dra7-evm.dts > index c6ce625..4f4c469 100644 > --- a/arch/arm/boot/dts/dra7-evm.dts > +++ b/arch/arm/boot/dts/dra7-evm.dts > @@ -201,6 +201,7 @@ > regulator-name = "smps45"; > regulator-min-microvolt = < 850000>; > regulator-max-microvolt = <1150000>; > + regulator-always-on; > regulator-boot-on; > }; > > @@ -209,6 +210,7 @@ > regulator-name = "smps6"; > regulator-min-microvolt = <850000>; > regulator-max-microvolt = <12500000>; > + regulator-always-on; > regulator-boot-on; > }; > > @@ -226,6 +228,7 @@ > regulator-name = "smps8"; > regulator-min-microvolt = < 850000>; > regulator-max-microvolt = <1250000>; > + regulator-always-on; > regulator-boot-on; > }; > > @@ -252,6 +255,7 @@ > regulator-name = "ldo2"; > regulator-min-microvolt = <3300000>; > regulator-max-microvolt = <3300000>; > + regulator-always-on; > regulator-boot-on; > }; > > @@ -269,6 +273,7 @@ > regulator-name = "ldo9"; > regulator-min-microvolt = <1050000>; > regulator-max-microvolt = <1050000>; > + regulator-always-on; > regulator-boot-on; > }; > > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
