drm/amdgpu: set Vega20 LBPW as disabled at default

For Vega20, LBPW feature is disabled at default.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index 928034ce7994..7abefb80f93d 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -2499,6 +2499,20 @@ static int gfx_v9_0_rlc_resume(struct amdgpu_device *adev)
                         return r;
         }
 
+        if (amdgpu_lbpw == -1) {
+                switch (adev->asic_type) {
+                case CHIP_RAVEN:
+                        amdgpu_lbpw = 1;
+                        break;
+                case CHIP_VEGA20:
+                        amdgpu_lbpw = 0;
+                        break;
+                default:
+                        amdgpu_lbpw = 0;
+                        break;
+                }
+        }
+
         if (adev->asic_type == CHIP_RAVEN ||
             adev->asic_type == CHIP_VEGA20) {
                 if (amdgpu_lbpw != 0)