From: Adrian Hunter <adrian.hunter@nokia.com>
To: Venkatraman S <svenkatr@ti.com>
Cc: Tony Lindgren <tony@atomide.com>,
Russell King - ARM Linux <linux@arm.linux.org.uk>,
Santosh Shilimkar <santosh.shilimkar@ti.com>,
Kevin Hilman <khilman@deeprootsystems.com>,
"linux-omap@vger.kernel.org" <linux-omap@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"Lavinen Jarkko (Nokia-M/Helsinki)" <jarkko.lavinen@nokia.com>
Subject: Re: [Patch v4] OMAP: sDMA driver: descriptor autoloading feature
Date: Wed, 06 Jan 2010 15:16:01 +0200 [thread overview]
Message-ID: <4B448D11.5060400@nokia.com> (raw)
In-Reply-To: <618f0c911001032303p5d103f3et6271a71e1e5fbc96@mail.gmail.com>
Venkatraman S wrote:
> On Tue, Dec 29, 2009 at 3:18 AM, Tony Lindgren <tony@atomide.com> wrote:
>> * Venkatraman S <svenkatr@ti.com> [091211 07:01]:
>>> Here is the most updated version of the patch (thanks to Russell's
>>> review). This patch is applicable to OMAP4xxx as well as OMAP3630
>>> Reference to previous posts
>>> v1 http://marc.info/?l=linux-omap&m=125012097403050&w=2
>>> v2 http://marc.info/?l=linux-omap&m=125137152606644&w=2
>>> v3 http://patchwork.kernel.org/patch/45408/
>> Do you have a patch for drivers/mmc/host/omap_hsmmc.c to
>> use this feature? Or some other driver?
>>
>> Regards,
>>
>> Tony
>
> I am about to start working on omap_hsmmc to use the descriptor load
> feature. If the DMA changes are acceptable, I can post the driver
> patch as well.
I presume this is about performance. How does it compare to chained DMA?
We have a patch for omap_hsmmc for chained DMA that we are still testing.
WARNING: multiple messages have this Message-ID (diff)
From: adrian.hunter@nokia.com (Adrian Hunter)
To: linux-arm-kernel@lists.infradead.org
Subject: [Patch v4] OMAP: sDMA driver: descriptor autoloading feature
Date: Wed, 06 Jan 2010 15:16:01 +0200 [thread overview]
Message-ID: <4B448D11.5060400@nokia.com> (raw)
In-Reply-To: <618f0c911001032303p5d103f3et6271a71e1e5fbc96@mail.gmail.com>
Venkatraman S wrote:
> On Tue, Dec 29, 2009 at 3:18 AM, Tony Lindgren <tony@atomide.com> wrote:
>> * Venkatraman S <svenkatr@ti.com> [091211 07:01]:
>>> Here is the most updated version of the patch (thanks to Russell's
>>> review). This patch is applicable to OMAP4xxx as well as OMAP3630
>>> Reference to previous posts
>>> v1 http://marc.info/?l=linux-omap&m=125012097403050&w=2
>>> v2 http://marc.info/?l=linux-omap&m=125137152606644&w=2
>>> v3 http://patchwork.kernel.org/patch/45408/
>> Do you have a patch for drivers/mmc/host/omap_hsmmc.c to
>> use this feature? Or some other driver?
>>
>> Regards,
>>
>> Tony
>
> I am about to start working on omap_hsmmc to use the descriptor load
> feature. If the DMA changes are acceptable, I can post the driver
> patch as well.
I presume this is about performance. How does it compare to chained DMA?
We have a patch for omap_hsmmc for chained DMA that we are still testing.
next prev parent reply other threads:[~2010-01-06 13:17 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-11 15:01 [Patch v4] OMAP: sDMA driver: descriptor autoloading feature Venkatraman S
2009-12-11 15:01 ` Venkatraman S
2009-12-28 21:48 ` Tony Lindgren
2009-12-28 21:48 ` Tony Lindgren
2010-01-04 7:03 ` Venkatraman S
2010-01-04 7:03 ` Venkatraman S
2010-01-04 7:10 ` Shilimkar, Santosh
2010-01-04 7:10 ` Shilimkar, Santosh
2010-01-04 8:48 ` Venkatraman S
2010-01-04 8:48 ` Venkatraman S
2010-01-04 9:00 ` Shilimkar, Santosh
2010-01-04 9:00 ` Shilimkar, Santosh
2010-01-06 13:16 ` Adrian Hunter [this message]
2010-01-06 13:16 ` Adrian Hunter
2010-01-06 14:45 ` Venkatraman S
2010-01-06 14:45 ` Venkatraman S
-- strict thread matches above, loose matches on Subject: below --
2010-01-07 7:59 adrian.hunter
2010-01-07 7:59 ` adrian.hunter at nokia.com
2010-01-07 9:05 ` Shilimkar, Santosh
2010-01-07 9:05 ` Shilimkar, Santosh
2010-01-07 9:36 ` S, Venkatraman
2010-01-07 9:36 ` S, Venkatraman
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