drm/amdgpu: disable GFX PG on CZ/BR/ST

Still some stability issues under certain workloads.
Reviewed-by: Tom St Denis <tom.stdenis@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/vi.c

@@ -1249,15 +1249,7 @@ static int vi_common_early_init(void *handle)
 			AMD_CG_SUPPORT_HDP_LS |
 			AMD_CG_SUPPORT_SDMA_MGCG |
 			AMD_CG_SUPPORT_SDMA_LS;
-		/* rev0 hardware doesn't support PG */
 		adev->pg_flags = 0;
-		if (adev->rev_id != 0x00)
-			adev->pg_flags |= AMD_PG_SUPPORT_GFX_PG |
-				AMD_PG_SUPPORT_GFX_SMG |
-				AMD_PG_SUPPORT_GFX_DMG |
-				AMD_PG_SUPPORT_CP |
-				AMD_PG_SUPPORT_RLC_SMU_HS |
-				AMD_PG_SUPPORT_GFX_PIPELINE;
 		adev->external_rev_id = adev->rev_id + 0x1;
 		break;
 	case CHIP_STONEY:
@@ -1276,12 +1268,6 @@ static int vi_common_early_init(void *handle)
 			AMD_CG_SUPPORT_HDP_LS |
 			AMD_CG_SUPPORT_SDMA_MGCG |
 			AMD_CG_SUPPORT_SDMA_LS;
-		adev->pg_flags = AMD_PG_SUPPORT_GFX_PG |
-			AMD_PG_SUPPORT_GFX_SMG |
-			AMD_PG_SUPPORT_GFX_DMG |
-			AMD_PG_SUPPORT_GFX_PIPELINE |
-			AMD_PG_SUPPORT_CP |
-			AMD_PG_SUPPORT_RLC_SMU_HS;
 		adev->external_rev_id = adev->rev_id + 0x1;
 		break;
 	default: