From: Mika Westerberg <mika.westerberg@iki.fi>
To: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-arm-kernel@lists.infradead.org,
Vinod Koul <vinod.koul@intel.com>,
linux-kernel@vger.kernel.org, hsweeten@visionengravers.com,
ryan@bluewatersys.com, Dan Williams <dan.j.williams@intel.com>,
Grant Likely <grant.likely@secretlab.ca>,
spi mailing list <spi-devel-general@lists.sourceforge.net>
Subject: Re: [PATCH 1/5] dmaengine: add ep93xx DMA support
Date: Thu, 26 May 2011 07:33:44 +0300 [thread overview]
Message-ID: <20110526043344.GA2749@acer> (raw)
In-Reply-To: <BANLkTin8Trn-44Op+GbxrgocFrnPuXUZ2w@mail.gmail.com>
On Wed, May 25, 2011 at 10:47:14PM +0200, Linus Walleij wrote:
>
> > IMHO it is better to have ep93xx implementation on its own driver since it is
> > not a real AMBA PL022 peripheral but some weird hack made by Cirrus (although
> > my opinions are bit biased).
>
> I disagree because it's IMO at first sight no more deviant than our "PL023"
> variants that still use the same pl022 driver.
Ok.
Do you think that we can go forward with this patch series if I drop the last
patch (spi/ep93xx: add DMA support)? This way we will have dmaengine
implementation in place, whatever SPI driver we choose to use with ep93xx.
We can then try to use amba-pl022 driver with ep93xx and see if it works or
not, and how much work is needed. I would like some comments from Hartley and
Ryan also.
> Is there some inexepensive hardware with EP93xx I can get to fix this
> myself?
Check for example Technologic Systems (embeddedarm.com), I have their TS-7260
board which has ep9302.
WARNING: multiple messages have this Message-ID (diff)
From: mika.westerberg@iki.fi (Mika Westerberg)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/5] dmaengine: add ep93xx DMA support
Date: Thu, 26 May 2011 07:33:44 +0300 [thread overview]
Message-ID: <20110526043344.GA2749@acer> (raw)
In-Reply-To: <BANLkTin8Trn-44Op+GbxrgocFrnPuXUZ2w@mail.gmail.com>
On Wed, May 25, 2011 at 10:47:14PM +0200, Linus Walleij wrote:
>
> > IMHO it is better to have ep93xx implementation on its own driver since it is
> > not a real AMBA PL022 peripheral but some weird hack made by Cirrus (although
> > my opinions are bit biased).
>
> I disagree because it's IMO at first sight no more deviant than our "PL023"
> variants that still use the same pl022 driver.
Ok.
Do you think that we can go forward with this patch series if I drop the last
patch (spi/ep93xx: add DMA support)? This way we will have dmaengine
implementation in place, whatever SPI driver we choose to use with ep93xx.
We can then try to use amba-pl022 driver with ep93xx and see if it works or
not, and how much work is needed. I would like some comments from Hartley and
Ryan also.
> Is there some inexepensive hardware with EP93xx I can get to fix this
> myself?
Check for example Technologic Systems (embeddedarm.com), I have their TS-7260
board which has ep9302.
next prev parent reply other threads:[~2011-05-26 4:33 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-22 17:03 [PATCH 0/5] ep93xx DMA patches Mika Westerberg
2011-05-22 17:03 ` Mika Westerberg
2011-05-22 17:03 ` [PATCH 1/5] dmaengine: add ep93xx DMA support Mika Westerberg
2011-05-22 17:03 ` Mika Westerberg
2011-05-25 8:00 ` Koul, Vinod
2011-05-25 8:00 ` Koul, Vinod
2011-05-25 19:00 ` Mika Westerberg
2011-05-25 19:00 ` Mika Westerberg
2011-05-26 4:38 ` Koul, Vinod
2011-05-26 4:38 ` Koul, Vinod
2011-05-26 18:15 ` Mika Westerberg
2011-05-26 18:15 ` Mika Westerberg
2011-05-26 18:42 ` H Hartley Sweeten
2011-05-26 18:42 ` H Hartley Sweeten
2011-05-25 8:39 ` Linus Walleij
2011-05-25 8:39 ` Linus Walleij
2011-05-25 8:19 ` Koul, Vinod
2011-05-25 8:19 ` Koul, Vinod
2011-05-25 9:09 ` Linus Walleij
2011-05-25 9:09 ` Linus Walleij
2011-05-25 19:54 ` Mika Westerberg
2011-05-25 19:54 ` Mika Westerberg
2011-05-25 20:47 ` Linus Walleij
2011-05-25 20:47 ` Linus Walleij
2011-05-26 4:33 ` Mika Westerberg [this message]
2011-05-26 4:33 ` Mika Westerberg
2011-05-26 5:26 ` Ryan Mallon
2011-05-26 5:26 ` Ryan Mallon
2011-05-26 7:15 ` Linus Walleij
2011-05-26 7:15 ` Linus Walleij
2011-05-26 18:38 ` Mika Westerberg
2011-05-26 18:38 ` Mika Westerberg
2011-05-26 18:48 ` H Hartley Sweeten
2011-05-26 18:48 ` H Hartley Sweeten
2011-05-26 21:53 ` Russell King - ARM Linux
2011-05-26 21:53 ` Russell King - ARM Linux
2011-05-26 22:58 ` Linus Walleij
2011-05-26 22:58 ` Linus Walleij
2011-05-27 1:38 ` H Hartley Sweeten
2011-05-27 1:38 ` H Hartley Sweeten
2011-05-28 10:33 ` Mika Westerberg
2011-05-28 10:33 ` Mika Westerberg
2011-05-22 17:03 ` [PATCH 2/5] ep93xx: add dmaengine platform code Mika Westerberg
2011-05-22 17:03 ` Mika Westerberg
2011-05-27 1:44 ` H Hartley Sweeten
2011-05-27 1:44 ` H Hartley Sweeten
2011-05-22 17:03 ` [PATCH 3/5] ASoC: ep93xx: convert to use the DMA engine API Mika Westerberg
2011-05-22 17:03 ` Mika Westerberg
2011-05-23 5:11 ` Mark Brown
2011-05-23 5:11 ` Mark Brown
2011-05-23 9:38 ` Liam Girdwood
2011-05-23 9:38 ` Liam Girdwood
2011-05-27 1:43 ` H Hartley Sweeten
2011-05-27 1:43 ` H Hartley Sweeten
2011-05-22 17:03 ` [PATCH 4/5] ep93xx: remove the old M2P DMA code Mika Westerberg
2011-05-22 17:03 ` Mika Westerberg
2011-05-27 1:42 ` H Hartley Sweeten
2011-05-27 1:42 ` H Hartley Sweeten
2011-05-22 17:03 ` [PATCH 5/5] spi/ep93xx: add DMA support Mika Westerberg
2011-05-22 17:03 ` Mika Westerberg
2011-05-27 1:47 ` H Hartley Sweeten
2011-05-27 1:47 ` H Hartley Sweeten
2011-05-23 17:34 ` [PATCH 0/5] ep93xx DMA patches H Hartley Sweeten
2011-05-23 17:34 ` H Hartley Sweeten
2011-05-23 20:10 ` Ryan Mallon
2011-05-23 20:10 ` Ryan Mallon
2011-05-24 14:42 ` Mika Westerberg
2011-05-24 14:42 ` Mika Westerberg
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