From 87d0bab2cba3c31624b80cc68bcf5e29ef969458 Mon Sep 17 00:00:00 2001 From: Hiroshi DOYU Date: Mon, 7 May 2012 12:24:48 +0200 Subject: ARM: tegra: Add Tegra AHB driver Tegra AHB Bus conforms to the AMBA Specification (Rev 2.0) Advanced High-performance Bus (AHB) architecture. The AHB Arbiter controls AHB bus master arbitration. This effectively forms a second level of arbitration for access to the memory controller through the AHB Slave Memory device. The AHB pre-fetch logic can be configured to enhance performance for devices doing sequential access. Each AHB master is assigned to either the high or low priority bin. Both Tegra20/30 have this AHB bus. Some of configuration params could be passed from DT too if needed. Signed-off-by: Hiroshi DOYU Acked-by: Arnd Bergmann Cc: Felipe Balbi Signed-off-by: Stephen Warren --- arch/arm/mach-tegra/Kconfig | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'arch') diff --git a/arch/arm/mach-tegra/Kconfig b/arch/arm/mach-tegra/Kconfig index d0f2546..8bf27b5 100644 --- a/arch/arm/mach-tegra/Kconfig +++ b/arch/arm/mach-tegra/Kconfig @@ -50,6 +50,14 @@ config TEGRA_PCI depends on ARCH_TEGRA_2x_SOC select PCI +config TEGRA_AHB + bool "Enable AHB driver for NVIDIA Tegra SoCs" + default y + help + Adds AHB configuration functionality for NVIDIA Tegra SoCs, + which controls AHB bus master arbitration and some + perfomance parameters(priority, prefech size). + comment "Tegra board type" config MACH_HARMONY -- cgit v1.1