Enabling SPI

Hello,

I am following this tutorial: http://elinux.org/Jetson/TX1_SPI#Configuring_GPIO_Pinmux_for_SPI to enable SPI. Everything works fine and I get SPIDEV0.0 device, but IMu readings from Auvidea J100 I need SPIDEV3.0. Any suggestions what changes to make so I could read IMU data?