From: Alexandre Belloni <alexandre.belloni@free-electrons.com>
To: Mark Brown <broonie@kernel.org>
Cc: alsa-devel@alsa-project.org,
Nicolas Ferre <nicolas.ferre@atmel.com>,
linux-arm-kernel@lists.infradead.org,
Bo Shen <voice.shen@atmel.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] ASoC: atmel-pcm-dma: increase buffer_bytes_max
Date: Thu, 2 Apr 2015 10:13:18 +0200 [thread overview]
Message-ID: <20150402081318.GF20669@piout.net> (raw)
In-Reply-To: <20150401203342.GH6023@sirena.org.uk>
On 01/04/2015 at 21:33:42 +0100, Mark Brown wrote :
> On Mon, Mar 30, 2015 at 09:40:37PM +0200, Alexandre Belloni wrote:
> > atmel-pcm-dma is not limited to a buffer size of 64kB like atmel-pcm-pdc.
> > Increase buffer_bytes_max to 512kB to allow for higher bit rates (i.e. 32bps at
> > 192kHz) to work correctly. By default, keep the prealloc at 64kB.
>
> Applied, but please look into Lars' suggestion - we should be able to
> just figure everything out from the DMA controller.
This is definitively on the TODO list.
--
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
WARNING: multiple messages have this Message-ID (diff)
From: alexandre.belloni@free-electrons.com (Alexandre Belloni)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ASoC: atmel-pcm-dma: increase buffer_bytes_max
Date: Thu, 2 Apr 2015 10:13:18 +0200 [thread overview]
Message-ID: <20150402081318.GF20669@piout.net> (raw)
In-Reply-To: <20150401203342.GH6023@sirena.org.uk>
On 01/04/2015 at 21:33:42 +0100, Mark Brown wrote :
> On Mon, Mar 30, 2015 at 09:40:37PM +0200, Alexandre Belloni wrote:
> > atmel-pcm-dma is not limited to a buffer size of 64kB like atmel-pcm-pdc.
> > Increase buffer_bytes_max to 512kB to allow for higher bit rates (i.e. 32bps at
> > 192kHz) to work correctly. By default, keep the prealloc at 64kB.
>
> Applied, but please look into Lars' suggestion - we should be able to
> just figure everything out from the DMA controller.
This is definitively on the TODO list.
--
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
WARNING: multiple messages have this Message-ID (diff)
From: Alexandre Belloni <alexandre.belloni@free-electrons.com>
To: Mark Brown <broonie@kernel.org>
Cc: Bo Shen <voice.shen@atmel.com>,
Nicolas Ferre <nicolas.ferre@atmel.com>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, alsa-devel@alsa-project.org
Subject: Re: [PATCH] ASoC: atmel-pcm-dma: increase buffer_bytes_max
Date: Thu, 2 Apr 2015 10:13:18 +0200 [thread overview]
Message-ID: <20150402081318.GF20669@piout.net> (raw)
In-Reply-To: <20150401203342.GH6023@sirena.org.uk>
On 01/04/2015 at 21:33:42 +0100, Mark Brown wrote :
> On Mon, Mar 30, 2015 at 09:40:37PM +0200, Alexandre Belloni wrote:
> > atmel-pcm-dma is not limited to a buffer size of 64kB like atmel-pcm-pdc.
> > Increase buffer_bytes_max to 512kB to allow for higher bit rates (i.e. 32bps at
> > 192kHz) to work correctly. By default, keep the prealloc at 64kB.
>
> Applied, but please look into Lars' suggestion - we should be able to
> just figure everything out from the DMA controller.
This is definitively on the TODO list.
--
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
next prev parent reply other threads:[~2015-04-02 8:13 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-30 19:40 [PATCH] ASoC: atmel-pcm-dma: increase buffer_bytes_max Alexandre Belloni
2015-03-30 19:40 ` Alexandre Belloni
2015-03-31 7:39 ` [alsa-devel] " Lars-Peter Clausen
2015-03-31 7:39 ` Lars-Peter Clausen
2015-04-01 20:33 ` Mark Brown
2015-04-01 20:33 ` Mark Brown
2015-04-02 8:13 ` Alexandre Belloni [this message]
2015-04-02 8:13 ` Alexandre Belloni
2015-04-02 8:13 ` Alexandre Belloni
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