USB Device Mode
#1
I've a kernel build with DWC2/3 drivers and dual-role support enabled. I'm unable to see any devices in /sys/class/udc. Is there anyone who has worked on this? As I understand I need:

CONFIG_USB_DWC3=y
CONFIG_USB_DWC3_DUAL_ROLE=y
CONFIG_USB_GADGET=y
CONFIG_USB_CONFIGFS=y
CONFIG_USB_ETH=y


I see two controllers:
# ls /sys/bus/platform/drivers/dwc3
bind  fe800000.usb  fe900000.usb  module  uevent  unbind

I'm not able to get any more information by inspecting that filesystem. For my config, I have:
# cat .config | grep USB_DWC3
CONFIG_USB_DWC3=m
# CONFIG_USB_DWC3_ULPI is not set
# CONFIG_USB_DWC3_HOST is not set
# CONFIG_USB_DWC3_GADGET is not set
CONFIG_USB_DWC3_DUAL_ROLE=y
CONFIG_USB_DWC3_HAPS=m
CONFIG_USB_DWC3_MESON_G12A=m
CONFIG_USB_DWC3_OF_SIMPLE=m


# cat .config | grep USB_GADGET
CONFIG_USB_GADGET=m
# CONFIG_USB_GADGET_DEBUG is not set
# CONFIG_USB_GADGET_DEBUG_FILES is not set
# CONFIG_USB_GADGET_DEBUG_FS is not set
CONFIG_USB_GADGET_VBUS_DRAW=2
CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS=2
# CONFIG_USB_GADGET_XILINX is not set
CONFIG_USB_GADGETFS=m


# cat .config | grep USB_CONFIGFS
CONFIG_USB_CONFIGFS=m
CONFIG_USB_CONFIGFS_SERIAL=y
CONFIG_USB_CONFIGFS_ACM=y
CONFIG_USB_CONFIGFS_OBEX=y
CONFIG_USB_CONFIGFS_NCM=y
CONFIG_USB_CONFIGFS_ECM=y
CONFIG_USB_CONFIGFS_ECM_SUBSET=y
CONFIG_USB_CONFIGFS_RNDIS=y
CONFIG_USB_CONFIGFS_EEM=y
# CONFIG_USB_CONFIGFS_PHONET is not set
CONFIG_USB_CONFIGFS_MASS_STORAGE=y
CONFIG_USB_CONFIGFS_F_LB_SS=y
CONFIG_USB_CONFIGFS_F_FS=y
CONFIG_USB_CONFIGFS_F_UAC1=y
# CONFIG_USB_CONFIGFS_F_UAC1_LEGACY is not set
CONFIG_USB_CONFIGFS_F_UAC2=y
CONFIG_USB_CONFIGFS_F_MIDI=y
CONFIG_USB_CONFIGFS_F_HID=y
CONFIG_USB_CONFIGFS_F_UVC=y
CONFIG_USB_CONFIGFS_F_PRINTER=y


Messages In This Thread
USB Device Mode - by R0b0t1 - 09-18-2020, 12:12 PM
RE: USB Device Mode - by R0b0t1 - 09-18-2020, 07:45 PM
RE: USB Device Mode - by R0b0t1 - 09-19-2020, 09:21 AM
RE: USB Device Mode - by guannais - 10-30-2020, 07:34 PM

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