kernel build fails with TSP enabled

[ballestrerod]

I'm trying to build develop-4.4 kernel for a rk3328 chip. If I enable CONFIG_ROCKCHIP_TSP build fails on this missing file. I really need to use TSP interface on my project. I can't find this include file on any kernel release. please help me!

|   CC      drivers/media/platform/rockchip-tsp/rockchip_tsp.o
| /home/ballest/rockhevc_workspace/bsp/linux/linux-rockchip_4.4/drivers/media/platform/rockchip-tsp/rockchip_tsp.c:43:10: fatal error: linux/rk_tsp_api.h: No such file or directory
|    43 | #include <linux/rk_tsp_api.h>
|       |          ^~~~~~~~~~~~~~~~~~~~
| compilation terminated.
| make[6]: *** [/home/ballest/rockhevc_workspace/bsp/linux/linux-rockchip_4.4/scripts/Makefile.build:278: drivers/media/platform/rockchip-tsp/rockchip_tsp.o] Error 1
| make[5]: *** [/home/ballest/rockhevc_workspace/bsp/linux/linux-rockchip_4.4/scripts/Makefile.build:484: drivers/media/platform/rockchip-tsp] Error 2
| make[4]: *** [/home/ballest/rockhevc_workspace/bsp/linux/linux-rockchip_4.4/scripts/Makefile.build:484: drivers/media/platform] Error 2
| make[4]: *** Waiting for unfinished jobs....
| make[3]: *** [/home/ballest/rockhevc_workspace/bsp/linux/linux-rockchip_4.4/scripts/Makefile.build:484: drivers/media] Error 2
| make[3]: *** Waiting for unfinished jobs....
| make[2]: *** [/home/ballest/rockhevc_workspace/bsp/linux/linux-rockchip_4.4/Makefile:1036: drivers] Error 2
| make[1]: *** [Makefile:152: sub-make] Error 2
| make: *** [Makefile:24: __sub-make] Error 2