ARM: dts: imx6q-logicpd: Reduce inrush current on start

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 <aford173@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm/boot/dts/imx6-logicpd-baseboard.dtsi b/arch/arm/boot/dts/imx6-logicpd-baseboard.dtsi
index 3cae139e639695484cd71dc8806b8403cd31d989..53624d6bfbfb7bee9c6c2d664aaca0eb2c7c6395 100644 (file)
--- 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;
        };