gpu: nvgpu: implement PCIe Gen2 frequency swap

Implement the basic code to swap between PCIe bus speeds for the GPU.
Other GPUs are not supported yet. Currently the following speeds can
be used:

  Gen1 (2.5 MTPS)
  Gen2 (5.0 MTPS)

gp106 on DPX2 does not support Gen3.

JIRA DNVGPU-89

Change-Id: I8bebfc9d99b682bdcff406fa56e806097dd51499
Reviewed-on: http://git-master/r/1218177
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: http://git-master/r/1227925
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/Makefile.nvgpu-t18x b/drivers/gpu/nvgpu/Makefile.nvgpu-t18x
index eb9d5977..17b33959 100644
--- a/drivers/gpu/nvgpu/Makefile.nvgpu-t18x
+++ b/drivers/gpu/nvgpu/Makefile.nvgpu-t18x
@@ -42,7 +42,8 @@ nvgpu-y += \
         $(nvgpu-t18x)/clk/clk.o \
         $(nvgpu-t18x)/gp106/clk_gp106.o \
         $(nvgpu-t18x)/gp106/gp106_gating_reglist.o \
-        $(nvgpu-t18x)/gp106/therm_gp106.o
+        $(nvgpu-t18x)/gp106/therm_gp106.o \
+        $(nvgpu-t18x)/gp106/xve_gp106.o
 
 nvgpu-$(CONFIG_TEGRA_GK20A) += $(nvgpu-t18x)/gp10b/platform_gp10b_tegra.o