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Problem in enabling driver

Question asked by vinothkumar s on Jan 8, 2020
Latest reply on Jan 10, 2020 by vinothkumar s

Dear NXP,


I needs to enable CONFIG_USB_VIDEO (uvcvideo.ko) depends on CONFIG_USB (usbcore.ko)


But from Kconfig I come to know to build CONFIG_USB we needs to select M.

But for CONFIG_USB_VIDEO I needs to select CONFIG_USB as Y.



So, After Clean build, I got build error because I needs to select the CONFIG_USB as M


from AOSP/source/vendor/nxp-opensource/kernel_imx/drivers/usb/Kconfig

config USB
tristate "Support for Host-side USB"
depends on USB_ARCH_HAS_HCD
select NLS # for UTF-8 strings
Universal Serial Bus (USB) is a specification for a serial bus
subsystem which offers higher speeds and more features than the
traditional PC serial port. The bus supplies power to peripherals
and allows for hot swapping. Up to 127 USB peripherals can be
connected to a single USB host in a tree structure.

The USB host is the root of the tree, the peripherals are the
leaves and the inner nodes are special USB devices called hubs.
Most PCs now have USB host ports, used to connect peripherals
such as scanners, keyboards, mice, modems, cameras, disks,
flash memory, network links, and printers to the PC.

Say Y here if your computer has a host-side USB port and you want
to use USB devices. You then need to say Y to at least one of the
Host Controller Driver (HCD) options below. Choose a USB 1.1
controller, such as "UHCI HCD support" or "OHCI HCD support",
and "EHCI HCD (USB 2.0) support" except for older systems that
do not have USB 2.0 support. It doesn't normally hurt to select
them all if you are not certain.

If your system has a device-side USB port, used in the peripheral
side of the USB protocol, see the "USB Gadget" framework instead.

After choosing your HCD, then select drivers for the USB peripherals
you'll be using. You may want to check out the information provided
in <file:Documentation/usb/> and especially the links given in

To compile this driver as a module, choose M here: the
module will be called usbcore.



Build error, if I select as (CONFIG_USB_VIDEO depends on CONFIG_USB)


cp: cannot stat 'out/target/product/mek_8q/obj/KERNEL_OBJ/drivers/usb/core/usbcore.ko': No such file or directory




Thanks & Regards,