> From: [EMAIL PROTECTED] [mailto:linux-omap-
> [EMAIL PROTECTED] On Behalf Of Russell King - ARM Linux

> Well, the first question is... where has this come from, and why.

In OMAPs, a few devices have a local IO MMU.  Their basic structure is similar 
to an ARM MMU, but less featured. IVA & Camera have one each on 3430/2430, a 
2420 has those before mentioned and + 3rd in its video accelerator.

The usage in TI kernels has varied a bit.  Some times they are just load and 
lock TLB's, for others table walking can be enabled.  In all cases if a table 
walk miss happens it is fatal and the IP block device will have to be reset.

Paul Mundt had done the linux-omap tree version used with dspgateway.

Regards,
Richard W.

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