Patchwork [6/9] ARM: dts: omap5-uevm: update LDO4 voltage to 1.5V and settings

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Submitter Nishanth Menon
Date July 17, 2013, 4:45 p.m.
Message ID <1374079538-19548-7-git-send-email-nm@ti.com>
Download mbox | patch
Permalink /patch/259722/
State New
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Comments

Nishanth Menon - July 17, 2013, 4:45 p.m.
commit e00c27ef3b4c23e39d0a77b7c8e5be44c28001c7
(ARM: dts: OMAP5: Add Palmas MFD node and regulator nodes)
introduced regulator entries for OMAP5uEVM.

However, The regulator information is based on an older temporary
pre-production board variant and does not reflect production board
750-2628-XXX boards.

LDO4 supplies VDDAPHY_DISP which is vdda_dsiporta/c/vdda_hdmi

This can only be supplied at 1.5V or 1.8V and we currently
supply 2.2V.

To prevent any potential device damage risk, use the specified
1.5V-1.8V supply.

Remove 'always-on' and 'boot-on' settings here as it is a 'on need'
supply to SoC IP and is not enabled by PMIC by default at boot.

Reported-by: Marc J├╝ttner <m-juettner@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
---
 arch/arm/boot/dts/omap5-uevm.dts |    6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

Patch

diff --git a/arch/arm/boot/dts/omap5-uevm.dts b/arch/arm/boot/dts/omap5-uevm.dts
index c6d560b..1550d6a 100644
--- a/arch/arm/boot/dts/omap5-uevm.dts
+++ b/arch/arm/boot/dts/omap5-uevm.dts
@@ -372,10 +372,8 @@ 
 				ldo4_reg: ldo4 {
 					/* VDDAPHY_DISP: vdda_dsiport/hdmi */
 					regulator-name = "ldo4";
-					regulator-min-microvolt = <2200000>;
-					regulator-max-microvolt = <2200000>;
-					regulator-always-on;
-					regulator-boot-on;
+					regulator-min-microvolt = <1500000>;
+					regulator-max-microvolt = <1800000>;
 				};
 
 				ldo5_reg: ldo5 {