diff --git a/drivers/gpu/nvgpu/os/linux/ioctl_ctrl.c b/drivers/gpu/nvgpu/os/linux/ioctl_ctrl.c
index 73a8131da..f9ad8082a 100644
--- a/drivers/gpu/nvgpu/os/linux/ioctl_ctrl.c
+++ b/drivers/gpu/nvgpu/os/linux/ioctl_ctrl.c
@@ -129,6 +129,8 @@ struct nvgpu_flags_mapping {
 };
 
 static struct nvgpu_flags_mapping flags_mapping[] = {
+	{NVGPU_GPU_FLAGS_CAN_RAILGATE,
+		NVGPU_CAN_RAILGATE},
 	{NVGPU_GPU_FLAGS_HAS_SYNCPOINTS,
 		NVGPU_HAS_SYNCPOINTS},
 	{NVGPU_GPU_FLAGS_SUPPORT_PARTIAL_MAPPINGS,
diff --git a/include/uapi/linux/nvgpu.h b/include/uapi/linux/nvgpu.h
index 65e8427e3..b85ca7b63 100644
--- a/include/uapi/linux/nvgpu.h
+++ b/include/uapi/linux/nvgpu.h
@@ -162,6 +162,8 @@ struct nvgpu_gpu_zbc_query_table_args {
 #define NVGPU_GPU_FLAGS_SUPPORT_VPR			(1ULL << 27)
 /* Allocating per-channel syncpoint in user space is supported */
 #define NVGPU_GPU_FLAGS_SUPPORT_USER_SYNCPOINT		(1ULL << 28)
+/* Railgating (powering the GPU off completely) is supported and enabled */
+#define NVGPU_GPU_FLAGS_CAN_RAILGATE			(1ULL << 29)
 /* SM LRF ECC is enabled */
 #define NVGPU_GPU_FLAGS_ECC_ENABLED_SM_LRF	(1ULL << 60)
 /* SM SHM ECC is enabled */