diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c
index db51230163c5c82c56ad94caf8f7147bee04cd22..0150f66a5ae6df44407f7e99de44e0cef0566305 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v6_0.c
@@ -846,7 +846,8 @@ static int sdma_v6_0_mqd_init(struct amdgpu_device *adev, void *mqd,
 	m->sdmax_rlcx_rb_cntl =
 		order_base_2(prop->queue_size / 4) << SDMA0_QUEUE0_RB_CNTL__RB_SIZE__SHIFT |
 		1 << SDMA0_QUEUE0_RB_CNTL__RPTR_WRITEBACK_ENABLE__SHIFT |
-		4 << SDMA0_QUEUE0_RB_CNTL__RPTR_WRITEBACK_TIMER__SHIFT;
+		4 << SDMA0_QUEUE0_RB_CNTL__RPTR_WRITEBACK_TIMER__SHIFT |
+		1 << SDMA0_QUEUE0_RB_CNTL__F32_WPTR_POLL_ENABLE__SHIFT;
 
 	m->sdmax_rlcx_rb_base = lower_32_bits(prop->hqd_base_gpu_addr >> 8);
 	m->sdmax_rlcx_rb_base_hi = upper_32_bits(prop->hqd_base_gpu_addr >> 8);
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v11.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v11.c
index 26b53b6d673e5683179ef6affcac003aa65f8f52..4f6390f3236ef17100a856ea8163c4f4a02bb3f2 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v11.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v11.c
@@ -333,7 +333,8 @@ static void update_mqd_sdma(struct mqd_manager *mm, void *mqd,
 		<< SDMA0_QUEUE0_RB_CNTL__RB_SIZE__SHIFT |
 		q->vmid << SDMA0_QUEUE0_RB_CNTL__RB_VMID__SHIFT |
 		1 << SDMA0_QUEUE0_RB_CNTL__RPTR_WRITEBACK_ENABLE__SHIFT |
-		6 << SDMA0_QUEUE0_RB_CNTL__RPTR_WRITEBACK_TIMER__SHIFT;
+		6 << SDMA0_QUEUE0_RB_CNTL__RPTR_WRITEBACK_TIMER__SHIFT |
+		1 << SDMA0_QUEUE0_RB_CNTL__F32_WPTR_POLL_ENABLE__SHIFT;
 
 	m->sdmax_rlcx_rb_base = lower_32_bits(q->queue_address >> 8);
 	m->sdmax_rlcx_rb_base_hi = upper_32_bits(q->queue_address >> 8);