USB gadget zero on i.MX53

[tzp]

Hello dear community!

I am  facing some problems understanding how to write a gadget zero kernel module for the i.MX53.

Can somebody point me to a good source for documentation or some Examples?

Thanks in advance!

[YixingKong]

m_z, please click Correct Answer/Helpful Answer if your question had been answered.

Thanks,

Yixing

[fabio_estevam · Accepted solution]

I grepped the kernel source for "gadget zero":

$ git grep "gadget zero"drivers/usb/core/otg_whitelist.h:/* gadget zero, for testing */

drivers/usb/gadget/amd5536udc.c:                /* call gadget zero with setup d

drivers/usb/gadget/amd5536udc.c:                /* call gadget zero with setup d

drivers/usb/gadget/pch_udc.c:   /* call gadget zero with setup data received */

drivers/usb/gadget/pxa27x_udc.c:                /* Endpoints for gadget zero */

drivers/usb/misc/usbtest.c:     .name           = "Linux gadget zero",

Not so much of info we can find, but since this is not i.mx related the best place to ask about this topic is the linux-usb@vger.kernel.org mailing list.