diff mbox series

[08/14] regulator: dts: enable soft-start and ramp delay for the OLinuXino Lime2

Message ID 3fd79fcb96c8ead9fa5a3a85a080caf00f186e36.1543245984.git-series.plaes@plaes.org (mailing list archive)
State Not Applicable, archived
Headers show
Series regulator: axp20x: Stop AXP209 from crashing when enabling LDO3 | expand

Commit Message

Priit Laes Nov. 26, 2018, 3:27 p.m. UTC 
From: Olliver Schinagl <oliver@schinagl.nl>

The OLinuXino Lime2 has a big capacitor on its LDO3 output. It is
actually too large, causing the PMIC to shutdown when toggling the LDO3.

By enabling soft-start and ramp delay we increase the time for the
capacitor to charge lowering the current drain on the power regulator.

Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Priit Laes <plaes@plaes.org>
---
 arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts b/arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts
index b828677..ffafe97 100644
--- a/arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts
+++ b/arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts
@@ -245,6 +245,8 @@ 
 	regulator-min-microvolt = <2800000>;
 	regulator-max-microvolt = <2800000>;
 	regulator-name = "vddio-csi0";
+	regulator-soft-start;
+	regulator-ramp-delay = <1600>;
 };
 
 &reg_ldo4 {