From: Priit Laes <plaes@plaes.org>
To: Lee Jones <lee.jones@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>, Chen-Yu Tsai <wens@csie.org>,
Maxime Ripard <maxime.ripard@bootlin.com>,
Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Olliver Schinagl <oliver@schinagl.nl>,
linux-sunxi <linux-sunxi@googlegroups.com>
Cc: Priit Laes <plaes@plaes.org>
Subject: [PATCH 6/8] regulator: dts: enable soft-start and ramp delay for the OLinuXino Lime2
Date: Mon, 10 Dec 2018 20:42:17 +0200 [thread overview]
Message-ID: <b76e1964fee095164ed9313e9f57d4d4318c083f.1544466940.git-series.plaes@plaes.org> (raw)
In-Reply-To: <cover.4110554ae84987dedb8b58888a8a63d6b7f98c72.1544466940.git-series.plaes@plaes.org>
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 --git a/arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts b/arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts
index 55c9086..4e1c590 100644
--- a/arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts
+++ b/arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts
@@ -232,6 +232,8 @@
regulator-min-microvolt = <2800000>;
regulator-max-microvolt = <2800000>;
regulator-name = "vddio-csi0";
+ regulator-soft-start;
+ regulator-ramp-delay = <1600>;
};
®_ldo4 {
--
git-series 0.9.1
WARNING: multiple messages have this Message-ID (diff)
From: Priit Laes <plaes-q/aMd4JkU83YtjvyW6yDsg@public.gmane.org>
To: Lee Jones <lee.jones-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
Chen-Yu Tsai <wens-jdAy2FN1RRM@public.gmane.org>,
Maxime Ripard
<maxime.ripard-LDxbnhwyfcJBDgjK7y7TUQ@public.gmane.org>,
Liam Girdwood <lgirdwood-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
Olliver Schinagl <oliver-dxLnbx3+1qmEVqv0pETR8A@public.gmane.org>,
linux-sunxi <linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
Cc: Priit Laes <plaes-q/aMd4JkU83YtjvyW6yDsg@public.gmane.org>
Subject: [PATCH 6/8] regulator: dts: enable soft-start and ramp delay for the OLinuXino Lime2
Date: Mon, 10 Dec 2018 20:42:17 +0200 [thread overview]
Message-ID: <b76e1964fee095164ed9313e9f57d4d4318c083f.1544466940.git-series.plaes@plaes.org> (raw)
In-Reply-To: <cover.4110554ae84987dedb8b58888a8a63d6b7f98c72.1544466940.git-series.plaes-q/aMd4JkU83YtjvyW6yDsg@public.gmane.org>
From: Olliver Schinagl <oliver-dxLnbx3+1qmEVqv0pETR8A@public.gmane.org>
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-dxLnbx3+1qmEVqv0pETR8A@public.gmane.org>
Signed-off-by: Priit Laes <plaes-q/aMd4JkU83YtjvyW6yDsg@public.gmane.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 55c9086..4e1c590 100644
--- a/arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts
+++ b/arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts
@@ -232,6 +232,8 @@
regulator-min-microvolt = <2800000>;
regulator-max-microvolt = <2800000>;
regulator-name = "vddio-csi0";
+ regulator-soft-start;
+ regulator-ramp-delay = <1600>;
};
®_ldo4 {
--
git-series 0.9.1
WARNING: multiple messages have this Message-ID (diff)
From: Priit Laes <plaes@plaes.org>
To: Lee Jones <lee.jones@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>, Chen-Yu Tsai <wens@csie.org>,
Maxime Ripard <maxime.ripard@bootlin.com>,
Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Olliver Schinagl <oliver@schinagl.nl>,
linux-sunxi <linux-sunxi@googlegroups.com>
Cc: Priit Laes <plaes@plaes.org>
Subject: [PATCH 6/8] regulator: dts: enable soft-start and ramp delay for the OLinuXino Lime2
Date: Mon, 10 Dec 2018 20:42:17 +0200 [thread overview]
Message-ID: <b76e1964fee095164ed9313e9f57d4d4318c083f.1544466940.git-series.plaes@plaes.org> (raw)
In-Reply-To: <cover.4110554ae84987dedb8b58888a8a63d6b7f98c72.1544466940.git-series.plaes@plaes.org>
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 --git a/arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts b/arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts
index 55c9086..4e1c590 100644
--- a/arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts
+++ b/arch/arm/boot/dts/sun7i-a20-olinuxino-lime2.dts
@@ -232,6 +232,8 @@
regulator-min-microvolt = <2800000>;
regulator-max-microvolt = <2800000>;
regulator-name = "vddio-csi0";
+ regulator-soft-start;
+ regulator-ramp-delay = <1600>;
};
®_ldo4 {
--
git-series 0.9.1
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next prev parent reply other threads:[~2018-12-10 18:42 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-10 18:42 [PATCH 0/8] This is a second edition of a series that implements voltage Priit Laes
2018-12-10 18:42 ` Priit Laes
2018-12-10 18:42 ` Priit Laes
2018-12-10 18:42 ` [PATCH 1/8] mfd: axp20x: name voltage ramping define properly Priit Laes
2018-12-10 18:42 ` Priit Laes
2018-12-13 11:55 ` Mark Brown
2018-12-13 11:55 ` Mark Brown
2018-12-13 11:55 ` Mark Brown
2018-12-13 13:28 ` Lee Jones
2018-12-13 13:28 ` Lee Jones
2018-12-13 13:28 ` Lee Jones
2018-12-13 14:46 ` Mark Brown
2018-12-13 14:46 ` Mark Brown
2018-12-13 14:46 ` Mark Brown
2018-12-10 18:42 ` [PATCH 2/8] regulator: axp20x: add support for set_ramp_delay for AXP209 Priit Laes
2018-12-10 18:42 ` Priit Laes
2018-12-10 18:42 ` Priit Laes
2018-12-11 13:14 ` [linux-sunxi] " Julian Calaby
2018-12-11 13:14 ` Julian Calaby
2018-12-11 13:14 ` Julian Calaby
2018-12-12 11:02 ` [linux-sunxi] " Priit Laes
2018-12-12 11:02 ` Priit Laes
2018-12-10 18:42 ` [PATCH 3/8] dt-bindings: mfd: axp20x: add support for regulator-ramp-delay " Priit Laes
2018-12-10 18:42 ` Priit Laes
2018-12-10 18:42 ` Priit Laes
2018-12-10 18:42 ` [PATCH 4/8] regulator: axp20x: add software based soft_start for AXP209 LDO3 Priit Laes
2018-12-10 18:42 ` Priit Laes
2018-12-10 18:42 ` Priit Laes
2018-12-10 18:42 ` [PATCH 5/8] dt-bindings: mfd: axp20x: Add " Priit Laes
2018-12-10 18:42 ` Priit Laes
2018-12-10 18:42 ` Priit Laes
2018-12-10 18:42 ` Priit Laes [this message]
2018-12-10 18:42 ` [PATCH 6/8] regulator: dts: enable soft-start and ramp delay for the OLinuXino Lime2 Priit Laes
2018-12-10 18:42 ` Priit Laes
2018-12-10 18:42 ` [PATCH 7/8] mfd: axp20x: Clean up included headers Priit Laes
2018-12-10 18:42 ` Priit Laes
2018-12-10 18:42 ` Priit Laes
2018-12-10 18:42 ` [PATCH 8/8] mfd: axp20x: use explicit bit defines Priit Laes
2018-12-10 18:42 ` Priit Laes
2018-12-11 7:11 ` [linux-sunxi] [PATCH 0/8] This is a second edition of a series that implements voltage Priit Laes
2018-12-11 7:11 ` Priit Laes
2018-12-11 7:46 ` Lee Jones
2018-12-11 7:46 ` Lee Jones
2018-12-11 7:46 ` Lee Jones
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