From mboxrd@z Thu Jan  1 00:00:00 1970
From: Peter Ujfalusi <peter.ujfalusi@ti.com>
Subject: Re: [PATCH v3 2/9] ARM: OMAP: mcbsp: Enable FIFO use
	for OMAP2430
Date: Fri, 17 Aug 2012 17:03:23 +0300
Message-ID: <502E4F2B.6060403@ti.com>
References: <1345124468-8876-1-git-send-email-peter.ujfalusi@ti.com>
 <1345124468-8876-3-git-send-email-peter.ujfalusi@ti.com>
 <20120817130723.GZ11011@atomide.com> <502E43BC.30708@bitmer.com>
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To: Jarkko Nikula <jarkko.nikula@bitmer.com>
Cc: alsa-devel@alsa-project.org, Benoit Cousson <b-cousson@ti.com>, Tony Lindgren <tony@atomide.com>, devicetree-discuss@lists.ozlabs.org, Mark Brown <broonie@opensource.wolfsonmicro.com>, linux-omap@vger.kernel.org, Liam Girdwood <lrg@ti.com>, linux-arm-kernel@lists.infradead.org
List-Id: alsa-devel@alsa-project.org

On 08/17/2012 04:14 PM, Jarkko Nikula wrote:
> On 08/17/2012 04:07 PM, Tony Lindgren wrote:
>> * Peter Ujfalusi <peter.ujfalusi@ti.com> [120816 06:41]:
>>> On OMAP2430 all McBSP ports have 128 word long buffer, enable the use of
>>> the FIFO for the audio stack.
>> Is this the case also for 2420? I thought some only had a FIFO at
>> one port?
>>
> IRCC (I don't have specs), nope. Only 2430 (as noted by Peter) and
> onwards have FIFO.
> =

> But that's true that FIFO sizes differ between the ports. E.g. only
> ports 2 and 3 have 1024+128 deep FIFOs in OMAP3.
> =


OMAP2420 McBSP does not have FIFO (the IP is closer to OMAP1 McBSP).
OMAP2430, OMAP4, OMAP5 has 128 word long FIFO on all McBSP ports.
On OMAP3: McBSP2 have 1024+256 (1280) word FIFO the rest of the ports have =
128
long FIFO.


-- =

P=E9ter

From mboxrd@z Thu Jan  1 00:00:00 1970
From: peter.ujfalusi@ti.com (Peter Ujfalusi)
Date: Fri, 17 Aug 2012 17:03:23 +0300
Subject: [PATCH v3 2/9] ARM: OMAP: mcbsp: Enable FIFO use for OMAP2430
In-Reply-To: <502E43BC.30708@bitmer.com>
References: <1345124468-8876-1-git-send-email-peter.ujfalusi@ti.com>
 <1345124468-8876-3-git-send-email-peter.ujfalusi@ti.com>
 <20120817130723.GZ11011@atomide.com> <502E43BC.30708@bitmer.com>
Message-ID: <502E4F2B.6060403@ti.com>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On 08/17/2012 04:14 PM, Jarkko Nikula wrote:
> On 08/17/2012 04:07 PM, Tony Lindgren wrote:
>> * Peter Ujfalusi <peter.ujfalusi@ti.com> [120816 06:41]:
>>> On OMAP2430 all McBSP ports have 128 word long buffer, enable the use of
>>> the FIFO for the audio stack.
>> Is this the case also for 2420? I thought some only had a FIFO at
>> one port?
>>
> IRCC (I don't have specs), nope. Only 2430 (as noted by Peter) and
> onwards have FIFO.
> 
> But that's true that FIFO sizes differ between the ports. E.g. only
> ports 2 and 3 have 1024+128 deep FIFOs in OMAP3.
> 

OMAP2420 McBSP does not have FIFO (the IP is closer to OMAP1 McBSP).
OMAP2430, OMAP4, OMAP5 has 128 word long FIFO on all McBSP ports.
On OMAP3: McBSP2 have 1024+256 (1280) word FIFO the rest of the ports have 128
long FIFO.


-- 
P?ter