From: Shawn Guo <shawnguo@kernel.org>
To: Adam Ford <aford173@gmail.com>
Cc: linux-arm-kernel@lists.infradead.org,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Sascha Hauer <s.hauer@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
NXP Linux Team <linux-imx@nxp.com>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/3] ARM: DTS: imx6q-logicpd: Reduce inrush current on start
Date: Wed, 20 Mar 2019 20:44:48 +0800 [thread overview]
Message-ID: <20190320124446.GO4980@dragon> (raw)
In-Reply-To: <20190306140402.17122-2-aford173@gmail.com>
On Wed, Mar 06, 2019 at 08:04:00AM -0600, Adam Ford wrote:
> The main 3.3V regulator sources a series of additional regulators.
> This patch adds a small delay, so when the 3.3V regulator comes
> on it delays a bit before the subsequent regulators can come on.
> This reduces the inrush current a bit on the external DC power
> supply.
>
> Fixes: 1c207f911fe9 ("ARM: dts: imx: Add support for Logic PD
> i.MX6QD EVM")
Same comment as patch #1.
>
> Signed-off-by: Adam Ford <aford173@gmail.com>
To match the convention, the 'DTS' in subject prefix should be
lowercase.
Shawn
>
> diff --git a/arch/arm/boot/dts/imx6-logicpd-baseboard.dtsi b/arch/arm/boot/dts/imx6-logicpd-baseboard.dtsi
> index fb01fa6e4224..e31b6923cb72 100644
> --- a/arch/arm/boot/dts/imx6-logicpd-baseboard.dtsi
> +++ b/arch/arm/boot/dts/imx6-logicpd-baseboard.dtsi
> @@ -99,6 +99,7 @@
> regulator-min-microvolt = <3300000>;
> regulator-max-microvolt = <3300000>;
> gpio = <&gpio1 26 GPIO_ACTIVE_HIGH>;
> + startup-delay-us = <70000>;
> enable-active-high;
> regulator-always-on;
> };
> --
> 2.17.1
>
next prev parent reply other threads:[~2019-03-20 12:45 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-06 14:03 [PATCH 1/3] ARM: dts: imx6q-logicpd: Shutdown LCD regulator during suspend Adam Ford
2019-03-06 14:04 ` [PATCH 2/3] ARM: DTS: imx6q-logicpd: Reduce inrush current on start Adam Ford
2019-03-20 12:44 ` Shawn Guo [this message]
2019-03-20 13:41 ` Adam Ford
2019-03-20 14:57 ` Shawn Guo
2019-03-06 14:04 ` [PATCH 3/3] ARM: DTS: imx6q-logicpd: Fix Analog audio capture Adam Ford
2019-03-20 12:46 ` Shawn Guo
2019-03-20 12:42 ` [PATCH 1/3] ARM: dts: imx6q-logicpd: Shutdown LCD regulator during suspend Shawn Guo
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