| From dbb58e291cd47e594b64293bd91a4ce40626513c Mon Sep 17 00:00:00 2001 |
| From: Adam Ford <aford173@gmail.com> |
| Date: Tue, 2 Apr 2019 14:19:08 -0500 |
| Subject: ARM: dts: imx6q-logicpd: Reduce inrush current on start |
| |
| 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; |
| }; |
