gpu: nvlink: change default link speed to 20G

Add support for 20G speed by updating initPLL command and
update the default link speed set during nvlink init to 20G.

Bug 200398181

Change-Id: I22cde32842d140b34481aaec2b1561ffbd44e2d8
Signed-off-by: Tejal Kudav <tkudav@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1678444
Reviewed-by: Thomas Fleury <tfleury@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/include/nvgpu/nvlink.h b/drivers/gpu/nvgpu/include/nvgpu/nvlink.h
index 18e0aab6..7b8be7d8 100644
--- a/drivers/gpu/nvgpu/include/nvgpu/nvlink.h
+++ b/drivers/gpu/nvgpu/include/nvgpu/nvlink.h
@@ -128,7 +128,8 @@ struct nvgpu_nvlink_link {
 #define NVLINK_MAX_LINKS_SW 6
 
 enum nvgpu_nvlink_speed {
-        nvgpu_nvlink_speed_default,
+        nvgpu_nvlink_speed_25G,
+        nvgpu_nvlink_speed_20G,
         nvgpu_nvlink_speed__last,
 };