[QUESTION] omap iommu: a generic IOMMU?

[Ming Lei]

Hi  guys,

I found that omap-iommu.c has been under drivers/iommu for some time.

Just be curious, is it a generic IOMMU so that it can be used by all IO
peripherals in OMAP4?  Could you give some use cases about
the omap-iommu in kernel?

>From related source code[1] and OMAP4 TRM[2], looks like the omap iommu
only belongs to Cortex-M3 MPU subsystem inside OMAP4 chip, so I am wondering
why introduces the driver for arm v7 based linux kernel...

[1], arch/arm/mach-omap2/omap-iommu.c
[2], "20.5 MMU Register Manual" of "omap4 TRM Version O"

thanks,
-- 
Ming Lei