SPI cs1 doesnot operate

hyunbin

I am using up xtreme i12 and i have to use spi communication.
When I use my code in upboard, spidev2.0 spidev2.1 were operated well.
But, in i12, when I input ls /dev in linux, there are spidev1.0 and spidev1.1. so I used that devices,
However, the cs0 pin operates well while cs1 pin does not operates. when I used oscilloscope, the cs1 pin always show low state.
How can I use cs1 pin? is there any problem at pinctrl. deb ?

HarryChiu

Hi @hyunbin

Sorry for late reply.

Could you please provide more information??
What is your OS, version of kernel and bios??

Best Regards,
Harry Chiu