gpu: nvgpu: Disable ASPM for PCI platforms

Disable ASPM on boot for PCIe platforms.

Bug 200256272

Change-Id: I0dc63c1a5a9941a5ecdc6a5d691c0b780fb9a6b5
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: http://git-master/r/1263272
(cherry picked from commit bf576ea8a88326d107b3a91d196fe6d6018185f6)
Reviewed-on: http://git-master/r/1274478
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/pci.c b/drivers/gpu/nvgpu/pci.c
index 7cc058e4..7dd5ce03 100644
--- a/drivers/gpu/nvgpu/pci.c
+++ b/drivers/gpu/nvgpu/pci.c
@@ -66,6 +66,8 @@ static struct gk20a_platform nvgpu_pci_device[] = {
         .enable_slcg = true,
         .enable_blcg = true,
 
+        .disable_aspm = true,
+
         /* power management callbacks */
         .is_railgated = nvgpu_pci_tegra_is_railgated,
         .clk_round_rate = nvgpu_pci_clk_round_rate,
@@ -94,6 +96,8 @@ static struct gk20a_platform nvgpu_pci_device[] = {
         .enable_slcg = true,
         .enable_blcg = true,
 
+        .disable_aspm = true,
+
         /* power management callbacks */
         .is_railgated = nvgpu_pci_tegra_is_railgated,
         .clk_round_rate = nvgpu_pci_clk_round_rate,
@@ -122,6 +126,8 @@ static struct gk20a_platform nvgpu_pci_device[] = {
         .enable_slcg = true,
         .enable_blcg = true,
 
+        .disable_aspm = true,
+
         /* power management callbacks */
         .is_railgated = nvgpu_pci_tegra_is_railgated,
         .clk_round_rate = nvgpu_pci_clk_round_rate,