linux-kernel - Re: Driver for tightly coupled memory

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Message-ID: <20080916093513.GF1916@fluff.org.uk>
Date:	Tue, 16 Sep 2008 10:35:13 +0100
From:	Ben Dooks <ben-linux@...ff.org>
To:	Alessio Sangalli <alesan@...oweb.com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: Driver for tightly coupled memory

On Mon, Sep 15, 2008 at 01:35:43PM -0700, Alessio Sangalli wrote:
> Hi, the platform I am working on right now (ARM) has a so called 'TCM'
> (tightly coupled memory) that is some 8 to 32kB of SRAM in the chip, no
> waitstates, very high bandwidth, and it is possible to access it *while*
> accessing main memory. It may be a very good thing (for example) to
> implement a software FIFO to be used in ISRs or such.

This isn't the right list to be discussing this on, try looking for
linux-arm-kernel instead. It will get your question to the attention
of more people knowledgable about the ARM specifics.

> Do you know of any implementation of such software FIFO or any other
> kernel driver for TCMs?

IIRC, there's no current support for using TCMs.
 
> bye
> Alessio
> 
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