linux-kernel - Re: Problems with Freescale DMA driver

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Message-ID: <48D91D61.2080800@freescale.com>
Date:	Tue, 23 Sep 2008 11:46:25 -0500
From:	Timur Tabi <timur@...escale.com>
To:	Ira Snyder <iws@...o.caltech.edu>
CC:	linux-kernel@...r.kernel.org
Subject: Re: Problems with Freescale DMA driver

Ira Snyder wrote:

> In this case, I probably would like to reserve a DMA channel for my
> exclusive use. That way I won't run into problems by programming the DMA
> by hand.

If you write your own DMA driver, the current method for reserving a DMA channel
is to change the compatible property for that channel in the device tree to
something other than "fsl,elo-dma-channel" (or "fsl,eloplus-dma-channel").

-- 
Timur Tabi
Linux kernel developer at Freescale
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