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ARM: tegra: Add Tegra AHB driver

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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 <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Cc: Felipe Balbi <[email protected]>
Signed-off-by: Stephen Warren <[email protected]>
This commit is contained in:
Hiroshi DOYU 2012-05-07 12:24:48 +02:00 • committed by Stephen Warren
commit 87d0bab2cb
5 changed files with 283 additions and 3 deletions
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drivers/Makefile
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@ -18,7 +18,7 @@ obj-$(CONFIG_SFI) += sfi/
# PnP must come after ACPI since it will eventually need to check if acpi
# was used and do nothing if so
obj-$(CONFIG_PNP) += pnp/
obj-$(CONFIG_ARM_AMBA) += amba/
obj-y += amba/
# Many drivers will want to use DMA so this has to be made available
# really early.
obj-$(CONFIG_DMA_ENGINE) += dma/