* [PATCH] ARM: dts: imx6q-logicpd: Reduce inrush current on USBH1
@ 2019-04-02 19:32 Adam Ford
2019-04-11 5:48 ` Shawn Guo
0 siblings, 1 reply; 2+ messages in thread
From: Adam Ford @ 2019-04-02 19:32 UTC (permalink / raw)
To: linux-arm-kernel
Cc: adam.ford, Adam Ford, Rob Herring, Mark Rutland, Shawn Guo,
Sascha Hauer, Pengutronix Kernel Team, Fabio Estevam,
NXP Linux Team, devicetree, linux-kernel
Some USB peripherals draw more power, and the sourcing regulator
take a little time to turn on. This patch fixes an issue where
some devices occasionally do not get detected, because the power
isn't quite ready when communication starts, so we add a bit
of a delay.
Fixes: 1c207f911fe9 ("ARM: dts: imx: Add support for Logic PD
i.MX6QD EVM")
Signed-off-by: Adam Ford <aford173@gmail.com>
diff --git a/arch/arm/boot/dts/imx6-logicpd-baseboard.dtsi b/arch/arm/boot/dts/imx6-logicpd-baseboard.dtsi
index db6b5b900826..7731db493cb0 100644
--- a/arch/arm/boot/dts/imx6-logicpd-baseboard.dtsi
+++ b/arch/arm/boot/dts/imx6-logicpd-baseboard.dtsi
@@ -88,6 +88,7 @@
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
gpio = <&gpio7 12 GPIO_ACTIVE_HIGH>;
+ startup-delay-us = <70000>;
enable-active-high;
};
--
2.17.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] ARM: dts: imx6q-logicpd: Reduce inrush current on USBH1
2019-04-02 19:32 [PATCH] ARM: dts: imx6q-logicpd: Reduce inrush current on USBH1 Adam Ford
@ 2019-04-11 5:48 ` Shawn Guo
0 siblings, 0 replies; 2+ messages in thread
From: Shawn Guo @ 2019-04-11 5:48 UTC (permalink / raw)
To: Adam Ford
Cc: linux-arm-kernel, adam.ford, Rob Herring, Mark Rutland,
Sascha Hauer, Pengutronix Kernel Team, Fabio Estevam,
NXP Linux Team, devicetree, linux-kernel
On Tue, Apr 02, 2019 at 02:32:04PM -0500, Adam Ford wrote:
> Some USB peripherals draw more power, and the sourcing regulator
> take a little time to turn on. This patch fixes an issue where
> some devices occasionally do not get detected, because the power
> isn't quite ready when communication starts, so we add a bit
> of a delay.
>
> Fixes: 1c207f911fe9 ("ARM: dts: imx: Add support for Logic PD
> i.MX6QD EVM")
>
> Signed-off-by: Adam Ford <aford173@gmail.com>
Applied, thanks.
^ permalink raw reply [flat|nested] 2+ messages in thread
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