gpu: nvgpu: Add platform flag to disable ASPM

Add a platform flag and logic to disable ASPM on boot if a
platform does not want ASPM enabled.

Bug 200256272

Change-Id: I378997290377ef8ffa21bf8e7f3f59fa134b3d4d
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: http://git-master/r/1263271
(cherry picked from commit 01e4700b74f4b4c6f0b9ffb40747653f2b63ea3c)
Reviewed-on: http://git-master/r/1274477
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.c b/drivers/gpu/nvgpu/gk20a/gk20a.c
index bed728cf..77d708dd 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.c
@@ -1084,6 +1084,9 @@ int gk20a_pm_finalize_poweron(struct device *dev)
         if (g->ops.xve.available_speeds) {
                 u32 speed;
 
+                if (platform->disable_aspm && g->ops.xve.disable_aspm)
+                        g->ops.xve.disable_aspm(g);
+
                 g->ops.xve.sw_init(dev);
                 g->ops.xve.available_speeds(g, &speed);