Arm Mali T-624 gpu arithmetic pipeline depth kernel

I am doing a research on an Arm Mali T-624 board and i want to discover how many stages does the gpu arithmetic pipeline has and i am doing the running the following kernel

 __kernel void arithmetic_pipeline_depth(__global  int * list){   for(int j=1000000;j!=0;j--){}}

And i am running this kernel from 1 to 512 workgroups while i keep the number of work-items stable to number 1enter image description here

So the results for this expirement is that the arithmetic pipeline is about 38 stages long

Do you think it is correct?