[PATCH] ARM: dts: Remove min and max voltage values for dcdc3

[PATCH] ARM: dts: Remove min and max voltage values for dcdc3

[Keerthy]

dcdc3 supplies to DDR on AM43x series. When we set both
min and max values to the same value. The regulator framework
sets that particular voltage. This is bad as we are changing
the ddr voltage when executing from ddr. Hence remove the min and
max values. The ddr supply voltage shall be set from bootloader
when not executing from ddr and not while executing from kernel.

The previous discussion can be found here:

http://www.spinics.net/lists/devicetree/msg56399.html

Signed-off-by: Keerthy <j-keerthy@ti.com>
---
 arch/arm/boot/dts/am437x-gp-evm.dts  | 2 --
 arch/arm/boot/dts/am437x-sk-evm.dts  | 2 --
 arch/arm/boot/dts/am43x-epos-evm.dts | 2 --
 3 files changed, 6 deletions(-)

diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts
index 397e98b..29a538e 100644
--- a/arch/arm/boot/dts/am437x-gp-evm.dts
+++ b/arch/arm/boot/dts/am437x-gp-evm.dts
@@ -549,8 +549,6 @@
 
 		dcdc3: regulator-dcdc3 {
 			regulator-name = "vdcdc3";
-			regulator-min-microvolt = <1500000>;
-			regulator-max-microvolt = <1500000>;
 			regulator-boot-on;
 			regulator-always-on;
 			regulator-state-mem {
diff --git a/arch/arm/boot/dts/am437x-sk-evm.dts b/arch/arm/boot/dts/am437x-sk-evm.dts
index a62e158..2c6bf06 100644
--- a/arch/arm/boot/dts/am437x-sk-evm.dts
+++ b/arch/arm/boot/dts/am437x-sk-evm.dts
@@ -451,8 +451,6 @@
 
 		dcdc3: regulator-dcdc3 {
 			regulator-name = "vdds_ddr";
-			regulator-min-microvolt = <1500000>;
-			regulator-max-microvolt = <1500000>;
 			regulator-boot-on;
 			regulator-always-on;
 			regulator-state-mem {
diff --git a/arch/arm/boot/dts/am43x-epos-evm.dts b/arch/arm/boot/dts/am43x-epos-evm.dts
index f6648ab..54f40f3 100644
--- a/arch/arm/boot/dts/am43x-epos-evm.dts
+++ b/arch/arm/boot/dts/am43x-epos-evm.dts
@@ -442,8 +442,6 @@
 
 		dcdc3: regulator-dcdc3 {
 			regulator-name = "vdcdc3";
-			regulator-min-microvolt = <1500000>;
-			regulator-max-microvolt = <1500000>;
 			regulator-boot-on;
 			regulator-always-on;
 		};
-- 
1.9.1

[PATCH] ARM: dts: Remove min and max voltage values for dcdc3

[Keerthy]

On Friday 02 June 2017 02:51 PM, Keerthy wrote:
> dcdc3 supplies to DDR on AM43x series. When we set both
> min and max values to the same value. The regulator framework
> sets that particular voltage. This is bad as we are changing
> the ddr voltage when executing from ddr. Hence remove the min and
> max values. The ddr supply voltage shall be set from bootloader
> when not executing from ddr and not while executing from kernel.

Apologies for the $subject. I will send v2 with $Subject corrected.

> 
> The previous discussion can be found here:
> 
> http://www.spinics.net/lists/devicetree/msg56399.html
> 
> Signed-off-by: Keerthy <j-keerthy@ti.com>
> ---
>  arch/arm/boot/dts/am437x-gp-evm.dts  | 2 --
>  arch/arm/boot/dts/am437x-sk-evm.dts  | 2 --
>  arch/arm/boot/dts/am43x-epos-evm.dts | 2 --
>  3 files changed, 6 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts
> index 397e98b..29a538e 100644
> --- a/arch/arm/boot/dts/am437x-gp-evm.dts
> +++ b/arch/arm/boot/dts/am437x-gp-evm.dts
> @@ -549,8 +549,6 @@
>  
>  		dcdc3: regulator-dcdc3 {
>  			regulator-name = "vdcdc3";
> -			regulator-min-microvolt = <1500000>;
> -			regulator-max-microvolt = <1500000>;
>  			regulator-boot-on;
>  			regulator-always-on;
>  			regulator-state-mem {
> diff --git a/arch/arm/boot/dts/am437x-sk-evm.dts b/arch/arm/boot/dts/am437x-sk-evm.dts
> index a62e158..2c6bf06 100644
> --- a/arch/arm/boot/dts/am437x-sk-evm.dts
> +++ b/arch/arm/boot/dts/am437x-sk-evm.dts
> @@ -451,8 +451,6 @@
>  
>  		dcdc3: regulator-dcdc3 {
>  			regulator-name = "vdds_ddr";
> -			regulator-min-microvolt = <1500000>;
> -			regulator-max-microvolt = <1500000>;
>  			regulator-boot-on;
>  			regulator-always-on;
>  			regulator-state-mem {
> diff --git a/arch/arm/boot/dts/am43x-epos-evm.dts b/arch/arm/boot/dts/am43x-epos-evm.dts
> index f6648ab..54f40f3 100644
> --- a/arch/arm/boot/dts/am43x-epos-evm.dts
> +++ b/arch/arm/boot/dts/am43x-epos-evm.dts
> @@ -442,8 +442,6 @@
>  
>  		dcdc3: regulator-dcdc3 {
>  			regulator-name = "vdcdc3";
> -			regulator-min-microvolt = <1500000>;
> -			regulator-max-microvolt = <1500000>;
>  			regulator-boot-on;
>  			regulator-always-on;
>  		};
>