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ARM: dts: imx6qdl-nitrogen6x: fix USB PHY reset 

Declared as a regulator since the driver doesn't have a reset-gpios
property for this.

This ensures that the PHY is woken up, not depending on the state the
second stage bootloader leaves the pin.

This is a workaround until a proper mechanism is provided to reset such
devices like the pwrseq library [1] for instance.

[1] https://lkml.org/lkml/2017/2/10/779

Signed-off-by: Gary Bisson <gary.bisson@boundarydevices.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Gary Bisson 2017-07-24 14:59:58 +02:00 committed by Shawn Guo
parent b190044594
commit 4c1bad098d
1 changed files with 19 additions and 0 deletions
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19
arch/arm/boot/dts/imx6qdl-nitrogen6x.dtsi
View File

@ -108,6 +108,18 @@
startup-delay-us = <70000>;
enable-active-high;
};
reg_usb_h1_vbus: regulator@5 {
compatible = "regulator-fixed";
reg = <5>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usbh1>;
regulator-name = "usb_h1_vbus";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
gpio = <&gpio7 12 GPIO_ACTIVE_HIGH>;
enable-active-high;
};
};
gpio-keys {
@ -515,6 +527,12 @@
>;
};
pinctrl_usbh1: usbh1grp {
fsl,pins = <
MX6QDL_PAD_GPIO_17__GPIO7_IO12 0x030b0
>;
};
pinctrl_usbotg: usbotggrp {
fsl,pins = <
MX6QDL_PAD_GPIO_1__USB_OTG_ID 0x17059
@ -629,6 +647,7 @@
};
&usbh1 {
vbus-supply = <&reg_usb_h1_vbus>;
status = "okay";
};