SPI1 with D0 output (mosi) with Debian 8.4


I am using the latest image, Debian 8.4, for my Beaglebone Black and want to configure SPI1 as D0 output.

with universal-io overlay, I was able to get SPI1 working but D0 is always input (MISO)

I have then disabled universal-io and used BB-SPI1-01-00A0.dts , this forms spidev2.0 under /dev but SPI pins do not toggle :confused:

is it possible to use SPI1 D0 as output (MOSI) with Debian 8.4 image?