CONFIG_TEGRA_AHB (not configurable)

modulename: tegra-ahb.ko

configname: CONFIG_TEGRA_AHB

Linux Kernel Configuration
└─>Device Drivers
└─>TEGRA_AHB
In linux kernel since version 3.1 (release Date: 2011-10-24)  
Adds AHB configuration functionality for NVIDIA Tegra SoCs,
which controls AHB bus master arbitration and some performance
parameters (priority, prefetch size).

source code:
depends
CONFIG_ARM_AMBA

is selected by
CONFIG_TEGRA_IOMMU_SMMU