[QUESTION] omap iommu: a generic IOMMU?

[Ohad Ben-Cohen]

Hello,

On Sun, Nov 13, 2011 at 1:04 PM, Ming Lei <tom.leiming at gmail.com> wrote:
> Just be curious, is it a generic IOMMU so that it can be used by all IO
> peripherals in OMAP4?

No, it's a dedicated iommu for the DSP and dual-M3 subsystems.

> 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...

Because we control the iommus from the A9 (which is running Linux..) :)

Ohad.