USB IP host configuration in Imx8mp Android 11

[Lavanyavijay]

Hello NXP Team

I'm encountering a challenge while configuring the USBIP core in AOSP Android 11 for my NXP IMX8mp device. I've followed the steps outlined below, but USBIP-related kernel object files like usbip-core.ko and usbip-host.ko are not being generated in the expected output directory.

Steps Taken:

1. Kernel Build Environment Setup:

   • Executed make mrproper to clean the build directory.
   • Set environment variables:
     • ARCH=arm64 (assuming a 64-bit ARM architecture)
     • CLANG_PATH=/opt/prebuilt-android-clang (path to your prebuilt Android Clang compiler)
     • CROSS_COMPILE=/opt/gcc-arm-9.2-2019.12-x86_64-aarch64-none-linux-gnu/bin/aarch64-none-linux-gnu- (path to your ARM cross-compilation toolchain)

2. Kernel Configuration:

   • Generated an initial kernel configuration using make imx_v8_android_defconfig.
   • Opened the configuration using make menuconfig (or a similar tool if you prefer a text-based interface).

3. USBIP Core Configuration:

   • Enabled the following options (assuming they were not already enabled):

     • CONFIG_USBIP_CORE=y (enables the USBIP core)
     • CONFIG_USBIP_VHCI_HCD=y (enables the VHCI host controller driver)
     • CONFIG_USBIP_VHCI_HC_PORTS=8 (sets the number of VHCI host controller ports; adjust as needed)
     • CONFIG_USBIP_VHCI_NR_HCS=1 (sets the number of VHCI host controllers; adjust as needed)
     • CONFIG_USBIP_HOST=y (enables USBIP host functionality)
     • CONFIG_USBIP_VUDC=y (enables the USB gadget driver for USBIP)
     • CONFIG_USBIP_DEBUG=y (enables USBIP debugging output; consider enabling only for troubleshooting)

   • Saved the configuration (make savedefconfig).

4. Kernel Build:

   • Executed ./imx-make.sh kernel -c -j4 (assuming imx-make.sh is your build script; adjust the command if necessary) to build the kernel with the configured options.
     
     

     I appreciate your assistance in resolving this issue.

[AldoG]

Hello,

The steps you have provided looks fine, could you share if you are able to see the modules being loaded by the kernel?

Best regards/Saludos,
Aldo.