yocto : 4.9.88_2.0.0 not support mxc_v4l_vpu_test from 4.14.78 version, how can i change the imx_test version?
You can try to get 4.9.88_2.0.0 version from code aurora:
mxc_v4l2_test\test - imx-test - i.MX Driver Test Application Software