The USB OTG controller cannot be used until the power-domain is enabled
unless it was started in the bootloader.

Adding the power-domain reference to the OTG node allows the OTG
controller to operate.

Signed-off-by: Adam Ford <[email protected]>

diff --git a/arch/arm64/boot/dts/freescale/imx8mn.dtsi 
b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
index 27733fbe87e9..605e6dbd2c6f 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mn.dtsi
@@ -979,6 +979,7 @@ usbotg1: usb@32e40000 {
                                assigned-clock-parents = <&clk 
IMX8MN_SYS_PLL2_500M>;
                                fsl,usbphy = <&usbphynop1>;
                                fsl,usbmisc = <&usbmisc1 0>;
+                               power-domains = <&pgc_otg1>;
                                status = "disabled";
                        };
 
-- 
2.25.1

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