VAR-SOM-MX6 USB OTG host

VAR-SOM-MX6 - USB OTG Host

By default the OTG is configure to be "host". You can switch it to "peripheral" if you change the dr_mode in the device tree.

&usbotg {
	vbus-supply = <&reg_usb_otg_vbus>;
	pinctrl-names = "default";
	pinctrl-0 = <&pinctrl_usbotg_var>;
	disable-over-current;
	/* dr_mode: One of "host", "peripheral" or "otg". Defaults to "otg" */
	dr_mode = "host" ;
	status = "okay";
};

• build Linux out of tree.
• edit arch/arm/boot/dts/imx6qdl-var-som.dtsi
• Change the dr_mode in usbotg section
• re build the device tree with

$ make ARCH=arm CROSS_COMPILE=arm-poky-linux-gnueabi- imx6q-var-som.dtb

copy the file to the sd-card or re flash it to nand. See the relevant section in the WIKI.