From 395b23ca57b46e79d7956ce1d5a9381dc6fe0e3a Mon Sep 17 00:00:00 2001 From: Nishanth Menon Date: Tue, 21 Oct 2014 09:38:10 -0500 Subject: [PATCH] ARM: dts: dra7-evm: Keep all VDD rails always-on 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 Acked-by: Roger Quadros Signed-off-by: Tony Lindgren --- 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 07a525ac3b4f..0d8a3bd0f00d 100644 --- a/arch/arm/boot/dts/dra7-evm.dts +++ b/arch/arm/boot/dts/dra7-evm.dts @@ -281,6 +281,7 @@ regulator-name = "smps45"; regulator-min-microvolt = < 850000>; regulator-max-microvolt = <1150000>; + regulator-always-on; regulator-boot-on; }; @@ -289,6 +290,7 @@ regulator-name = "smps6"; regulator-min-microvolt = <850000>; regulator-max-microvolt = <12500000>; + regulator-always-on; regulator-boot-on; }; @@ -306,6 +308,7 @@ regulator-name = "smps8"; regulator-min-microvolt = < 850000>; regulator-max-microvolt = <1250000>; + regulator-always-on; regulator-boot-on; }; @@ -332,6 +335,7 @@ regulator-name = "ldo2"; regulator-min-microvolt = <3300000>; regulator-max-microvolt = <3300000>; + regulator-always-on; regulator-boot-on; }; @@ -349,6 +353,7 @@ regulator-name = "ldo9"; regulator-min-microvolt = <1050000>; regulator-max-microvolt = <1050000>; + regulator-always-on; regulator-boot-on; }; -- GitLab