|  | config TEGRA_HOST1X | 
|  | tristate "NVIDIA Tegra host1x driver" | 
|  | depends on ARCH_TEGRA || (ARM && COMPILE_TEST) | 
|  | select IOMMU_IOVA if IOMMU_SUPPORT | 
|  | help | 
|  | Driver for the NVIDIA Tegra host1x hardware. | 
|  |  | 
|  | The Tegra host1x module is the DMA engine for register access to | 
|  | Tegra's graphics- and multimedia-related modules. The modules served | 
|  | by host1x are referred to as clients. host1x includes some other | 
|  | functionality, such as synchronization. | 
|  |  | 
|  | if TEGRA_HOST1X | 
|  |  | 
|  | config TEGRA_HOST1X_FIREWALL | 
|  | bool "Enable HOST1X security firewall" | 
|  | default y | 
|  | help | 
|  | Say yes if kernel should protect command streams from tampering. | 
|  |  | 
|  | If unsure, choose Y. | 
|  |  | 
|  | endif |