I'm trying to cross-compile a driver for Raspberry Pi. The driver works in kernel 3.2 so I downloaded the 3.2.27 raspberry pi's kernel.
I compiled the kernel as follows:
make -j3 ARCH=arm CROSS_COMPILE=<dir>/rpi-tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin/arm-linux-gnueabihf-
make -j3 ARCH=arm CROSS_COMPILE=<dir>/rpi-tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin/arm-linux-gnueabihf- modules
make -j3 ARCH=arm CROSS_COMPILE=<dir>/rpi-tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin/arm-linux-gnueabihf- INSTALL_MOD_PATH=<dir>/modules-3.2.27-linaro/ modules_install
Where rpi-tools are the last raspberry's Github tools.
After copy the Image.img and /lib folder that includes /firmware and /modules to the SDCard and set the current Image as default, When boot the RaspberryPi shows some troubles related with Network interface and doesn't recognize the USB Keyboard so I can't logging into it.
I tried to modify the .config using make menuconfig settings in order to enable the keyboard in Device Drivers > Input device support and Devive Drivers > HID Devices but nothing works.
I'm using Dell SK-8115 keyboard, supported by RPi.
What options, theoretically, must be enabled in .config in kernel compilation for the keyboard use?
If anybody have any idea, your help would be appreciated. Thanks
SOLVED
The problem was the cmdline.txt file that had the flag dwc_otg.lpm_enable set to 1 insted of 0.
To edit the file I entered in recovery mode on raspberry boot pressing the Shift key. I edited that file and set the variable to 0. On the reboot the raspberry detected the keyboard.
Source of Raspberry Pi cmdline file: http://elinux.org/RPi_cmdline.txt