implementing usb for imx8 nano processor

Jayesh2408 — Wed, 23 Sep 2026 14:44:08 GMT

trying to implement usb for imx8 nano, the eval board layout shows floating wire for Id pin. will it work for host mode? because id need to be =0 for host mode.

Re: implementing usb for imx8 nano processor

Manuel_Salas — Wed, 23 Sep 2026 18:47:03 GMT

Hello @Jayesh2408

Hope you are doing very well.

Yes, a floating ID pin will work perfectly fine for host-only mode, provided you force the controller behavior via software.

You can just change the dr_mode property in device tree from "otg" to "host":

&usbotg1 { dr_mode = "host"; hnp-disable; srp-disable; adp-disable; usb-role-switch; disable-over-current; samsung,picophy-pre-emp-curr-control = <3>; samsung,picophy-dc-vol-level-adjust = <7>; status = "okay"; port { usb1_drd_sw: endpoint { remote-endpoint = <&typec1_dr_sw>; }; }; };

Best regards,

Salas.

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