- st,ch1-output-mapping = <0>; // set channel 1 output ch 1
- st,ch2-output-mapping = <0>; // set channel 2 output ch 1
- st,ch3-output-mapping = <0>; // set channel 3 output ch 1
+ st,ch1-output-mapping = /bits/ 8 <0>; // set channel 1 output ch 1
+ st,ch2-output-mapping = /bits/ 8 <0>; // set channel 2 output ch 1
+ st,ch3-output-mapping = /bits/ 8 <0>; // set channel 3 output ch 1