From: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Koro Chen <koro.chen-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
Cc: robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
matthias.bgg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
perex-/Fr2/VpizcU@public.gmane.org,
tiwai-l3A5Bk7waGM@public.gmane.org,
srv_heupstream-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org,
linux-mediatek-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
s.hauer-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org,
galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org,
lgirdwood-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
alsa-devel-K7yf7f+aM1XWsZ/bQMPhNw@public.gmane.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: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-10 8:14 [RESEND RFC PATCH 0/3] ASoC: Mediatek: Add support for MT8173 SOC Koro Chen
2015-04-10 8:14 ` [RESEND RFC PATCH 1/3] ASoC: mediatek: Add binding support for AFE driver Koro Chen
2015-04-18 17:34 ` Mark Brown
[not found] ` <20150418173407.GE26185-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2015-04-20 4:37 ` Sascha Hauer
[not found] ` <20150420043747.GH6325-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2015-04-20 20:48 ` Mark Brown
[not found] ` <20150420204849.GJ14892-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
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
[not found] ` <20150430201207.GK22845-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2015-05-04 1:57 ` Koro Chen
2015-04-10 8:14 ` [RESEND RFC PATCH 2/3] ASoC: mediatek: Add AFE connection control Koro Chen
[not found] ` <1428653649-38200-3-git-send-email-koro.chen-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
2015-04-18 17:37 ` Mark Brown
[not found] ` <20150418173740.GF26185-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2015-04-20 4:50 ` Sascha Hauer
[not found] ` <20150420045017.GI6325-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2015-04-20 20:52 ` Mark Brown
[not found] ` <20150420205230.GK14892-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2015-04-21 5:50 ` Sascha Hauer
[not found] ` <20150421055041.GQ6325-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2015-04-21 10:15 ` Mark Brown
2015-04-10 8:14 ` [RESEND RFC PATCH 3/3] ASoC: mediatek: Add AFE platform driver Koro Chen
2015-04-18 17:51 ` Mark Brown
[not found] ` <20150418175139.GG26185-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
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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