From: Mark Brown <broonie@kernel.org>
To: Koro Chen <koro.chen@mediatek.com>
Cc: robh+dt@kernel.org, matthias.bgg@gmail.com, perex@perex.cz,
tiwai@suse.de, srv_heupstream@mediatek.com,
linux-mediatek@lists.infradead.org, s.hauer@pengutronix.de,
galak@codeaurora.org, lgirdwood@gmail.com,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, alsa-devel@alsa-project.org
Subject: Re: [RESEND RFC PATCH 3/3] ASoC: mediatek: Add AFE platform driver
Date: Mon, 20 Apr 2015 21:55:11 +0100 [thread overview]
Message-ID: <20150420205511.GL14892@sirena.org.uk> (raw)
In-Reply-To: <1429510944.30743.36.camel@mtksdaap41>
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On Mon, Apr 20, 2015 at 02:22:24PM +0800, Koro Chen wrote:
> On Sat, 2015-04-18 at 18:51 +0100, Mark Brown wrote:
> > On Fri, Apr 10, 2015 at 04:14:09PM +0800, Koro Chen wrote:
> > Ah, so the SRAM is directly memory mappable. Nice. But we have a
> > limited amount of it so need to allocate it to a device somehow based on
> > some factor I guess?
> Yes, actually SRAM is only used for the main playback path (which is
> memif "DL1") to achieve low power in real use case. Maybe you think it's
> better to not describe this in the device tree, but to choose SRAM
> automatically if memif "DL1" is chosen?
Since it's directly memory mappable is there actually any cost in
latency terms from using the SRAM in low latency cases (or did I misread
what the code was doing there)? If it can only be used with one
interface and there's no downside from using it...
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next prev parent reply other threads:[~2015-04-20 20:55 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1428653649-38200-1-git-send-email-koro.chen@mediatek.com>
[not found] ` <1428653649-38200-2-git-send-email-koro.chen@mediatek.com>
2015-04-18 17:34 ` [RESEND RFC PATCH 1/3] ASoC: mediatek: Add binding support for AFE driver Mark Brown
2015-04-20 4:37 ` Sascha Hauer
2015-04-20 20:48 ` Mark Brown
2015-04-21 9:49 ` Sascha Hauer
2015-04-21 10:14 ` Mark Brown
2015-04-21 10:15 ` Koro Chen
2015-04-21 10:56 ` Mark Brown
2015-04-22 3:17 ` Koro Chen
2015-04-30 20:12 ` Mark Brown
2015-05-04 1:57 ` Koro Chen
[not found] ` <1428653649-38200-3-git-send-email-koro.chen@mediatek.com>
2015-04-18 17:37 ` [RESEND RFC PATCH 2/3] ASoC: mediatek: Add AFE connection control Mark Brown
2015-04-20 4:50 ` Sascha Hauer
2015-04-20 20:52 ` Mark Brown
2015-04-21 5:50 ` Sascha Hauer
2015-04-21 10:15 ` Mark Brown
[not found] ` <1428653649-38200-4-git-send-email-koro.chen@mediatek.com>
2015-04-18 17:51 ` [RESEND RFC PATCH 3/3] ASoC: mediatek: Add AFE platform driver Mark Brown
2015-04-20 6:22 ` Koro Chen
2015-04-20 20:55 ` Mark Brown [this message]
2015-04-21 2:27 ` Koro Chen
2015-04-21 10:05 ` Mark Brown
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