The SDK I used was imx-4.1-krogoth, compiled with DISTRO = fsl-imx-wayland MACHINE = imx6qsabresd source fsl-setup-release.sh-b build, compiled with bitbake fsl-image-gui.
But Linux kernel I want to add patch-4.1.15-rt18.patch on the bsp linux4.1 kernel. Will the GPU still work ok? Is GPU SDK specified only in version 4.1?