Hi,
I have an omapl138 based custom board with the linux kernel v2.6.34_DAVINCIPSP_03.21.00.01 taken from http://arago-project.org/git/projects/?p=linux-davinci.git;a=summary
I try to use the USB 2.0 OTG-port as a serial device and connect to a PC host. I have configured the linux kernel so I get a /dev/ttyGS0 device but when I connect my board to a Windows PC host nothing happens. The host PC does not detect the USB device. I have not installed any specific windows driver on the host PC yet but I thought my USB device would appear as an "unknown device" or something.
The USB port works fine when I configure it as a host and insert a memory stick but it simply will not work as a gadget.
Does anyone know what could be wrong?
This is how USB stuff i configured in my kernel:
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CONFIG_USB_SUPPORT=y
CONFIG_USB_ARCH_HAS_HCD=y
CONFIG_USB_ARCH_HAS_OHCI=y
CONFIG_USB=y
CONFIG_USB_OHCI_HCD=y
CONFIG_USB_OHCI_LITTLE_ENDIAN=y
CONFIG_USB_MUSB_HDRC=y
CONFIG_USB_MUSB_SOC=y
CONFIG_USB_MUSB_PERIPHERAL=y
CONFIG_USB_GADGET_MUSB_HDRC=y
CONFIG_USB_TI_CPPI41_DMA=y
CONFIG_USB_MUSB_DEBUG=y
CONFIG_USB_GADGET=y
CONFIG_USB_GADGET_VBUS_DRAW=2
CONFIG_USB_GADGET_SELECTED=y
CONFIG_USB_GADGET_DUALSPEED=y
CONFIG_USB_G_SERIAL=y
CONFIG_USB_OTG_UTILS=y
CONFIG_NOP_USB_XCEIV=y
I appriciate any suggestion or input.
// Henrik Abrahamsson
