From: Adam Ford aford173@gmail.com
commit dbb58e291cd47e594b64293bd91a4ce40626513c upstream.
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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- arch/arm/boot/dts/imx6-logicpd-baseboard.dtsi | 1 + 1 file changed, 1 insertion(+)
--- a/arch/arm/boot/dts/imx6-logicpd-baseboard.dtsi +++ b/arch/arm/boot/dts/imx6-logicpd-baseboard.dtsi @@ -100,6 +100,7 @@ regulator-min-microvolt = <3300000>; regulator-max-microvolt = <3300000>; gpio = <&gpio1 26 GPIO_ACTIVE_HIGH>; + startup-delay-us = <70000>; enable-active-high; regulator-always-on; };