SPI cs1 doesnot operate


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 ?


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