arm64: dts: allwinner: h6: orangepi: Disable OTG mode

As can be seen from OrangePi Lite 2 and One Plus schematics, VBUS pin on
USB OTG port is directly connected to 5 V power supply. This mean that
OTG port can safely operate only in host mode, even though these two
boards have ID pin connected.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi.dtsi
index f1be3dd..ebc120a 100644 (file)
--- a/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi.dtsi
@@ -251,7 +251,12 @@
 };
 
 &usb2otg {
-       dr_mode = "otg";
+       /*
+        * OrangePi Lite 2 and One Plus, where this DT is used, don't
+        * have a controllable VBUS even though they do have an ID pin.
+        * Using it as anything but a USB host is unsafe.
+        */
+       dr_mode = "host";
        status = "okay";
 };