diff mbox

[v2] ARM: dts: AM43XX: Remove min and max voltage values for dcdc3

Message ID 1496395441-29526-1-git-send-email-j-keerthy@ti.com (mailing list archive)
State New, archived
Headers show

Commit Message

J, KEERTHY June 2, 2017, 9:24 a.m. UTC
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>
---

Changes in v2:

  * Corrected $subject

 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(-)

Comments

Tony Lindgren June 6, 2017, 7:32 a.m. UTC | #1
* Keerthy <j-keerthy@ti.com> [170602 02:27]:
> 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>

Applying into omap-for-v4.13/dt thanks.

Tony
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diff mbox

Patch

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;
 		};