From mboxrd@z Thu Jan 1 00:00:00 1970 From: Adam Ford Subject: [PATCH V2] ARM: dts: imx6q-logicpd: Reduce inrush current on start Date: Tue, 2 Apr 2019 14:19:08 -0500 Message-ID: <20190402191908.4306-1-aford173@gmail.com> Return-path: Sender: linux-kernel-owner@vger.kernel.org To: linux-arm-kernel@lists.infradead.org Cc: adam.ford@logicpd.com, Adam Ford , Rob Herring , Mark Rutland , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: devicetree@vger.kernel.org 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 to help prevent a situation where the sourcing power supply cannot source enough current and overloads and the kit fails to start. Fixes: 1c207f911fe9 ("ARM: dts: imx: Add support for Logic PD i.MX6QD EVM") Signed-off-by: Adam Ford 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