linux-kernel - Re: [PATCH] ARM: OMAP1: DMA: Correct the number of logical channels

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Date:   Fri, 6 Jan 2017 08:33:35 -0800
From:   Tony Lindgren <tony@...mide.com>
To:     Aaro Koskinen <aaro.koskinen@....fi>
Cc:     Peter Ujfalusi <peter.ujfalusi@...com>, dmaengine@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] ARM: OMAP1: DMA: Correct the number of logical channels

* Aaro Koskinen <aaro.koskinen@....fi> [170105 13:48]:
> Hi,
> 
> On Tue, Jan 03, 2017 at 01:22:34PM +0200, Peter Ujfalusi wrote:
> > OMAP1510, OMAP5910 and OMAP310 have only 9 logical channels.
> > OMAP1610, OMAP5912, OMAP1710, OMAP730, and OMAP850 have 16 logical channels
> > available.
> > 
> > The wired 17 for the lch_count must have been used to cover the 16 + 1
> > dedicated LCD channel, in reality we can only use 9 or 16 channels.
> > 
> > The d->chan_count is not used by the omap-dma stack, so we can skip the
> > setup. chan_count was configured to the number of logical channels and not
> > the actual number of physical channels anyways.
> > 
> > Signed-off-by: Peter Ujfalusi <peter.ujfalusi@...com>
> 
> Acked-by: Aaro Koskinen <aaro.koskinen@....fi>

Applying into omap-for-v4.10/fixes thanks.

Tony