Must skills :

Experience in Linux device driver development and Debugging skills

Expereince and knowledge on Linux operating systems/kernel programming

Must be proficient in C

ARM experience, Understanding of protocols ( AHB/AXI, SPI, I2C etc..)

H/W understanding should be good

Additional skills : ( Each line is a requirement along with the above )

Multimedia linux drivers ( Camera, Display, Video )

WLAN driver development ( 802.11 )

GPS driver development

BT driver development

Driver development on peripherals ( USB, storage, UART, I2C, Touch Screen etc.)