linux-kernel - Applied "regulator: dts: enable soft-start and ramp delay for the OLinuXino Lime2" to the regulator tree

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Message-Id: <20181213181136.160E811254D1@debutante.sirena.org.uk>
Date:   Thu, 13 Dec 2018 18:11:36 +0000 (GMT)
From:   Mark Brown <broonie@...nel.org>
To:     Olliver Schinagl <oliver@...inagl.nl>
Cc:     Priit Laes <plaes@...es.org>, Mark Brown <broonie@...nel.org>,
        linux-kernel@...r.kernel.org
Subject: Applied "regulator: dts: enable soft-start and ramp delay for the OLinuXino Lime2" to the regulator tree

The patch

   regulator: dts: enable soft-start and ramp delay for the OLinuXino Lime2

has been applied to the regulator tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git 

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From c1132b006785b14d01ccf40922493278984555d5 Mon Sep 17 00:00:00 2001
From: Olliver Schinagl <oliver@...inagl.nl>
Date: Tue, 11 Dec 2018 17:17:10 +0200
Subject: [PATCH] regulator: dts: enable soft-start and ramp delay for the
 OLinuXino Lime2

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@...inagl.nl>
Signed-off-by: Priit Laes <plaes@...es.org>
Signed-off-by: Mark Brown <broonie@...nel.org>
---
 arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts b/arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts
index b828677f331d..ffafe9720b35 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 {
-- 
2.19.0.rc2