From: Jarkko Nikula <jhnikula@gmail.com>
To: Nishanth Menon <nm@ti.com>
Cc: Peter Ujfalusi <peter.ujfalusi@nokia.com>,
Tony Lindgren <tony@atomide.com>,
"linux-omap@vger.kernel.org" <linux-omap@vger.kernel.org>,
Liam Girdwood <lrg@slimlogic.co.uk>
Subject: Re: [PATCH 1/2] omap: dma: Fix buffering disable bit setting for omap24xx
Date: Fri, 1 Oct 2010 12:20:13 +0300 [thread overview]
Message-ID: <20101001122013.dc789e6f.jhnikula@gmail.com> (raw)
In-Reply-To: <4CA591FE.7030201@ti.com>
On Fri, 1 Oct 2010 02:47:10 -0500
Nishanth Menon <nm@ti.com> wrote:
> Peter Ujfalusi had written, on 10/01/2010 01:39 AM, the following:
> [...]
> > diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c
> > index ec7eddf..7115884 100644
> > --- a/arch/arm/plat-omap/dma.c
> > +++ b/arch/arm/plat-omap/dma.c
> > @@ -1000,7 +1000,7 @@ void omap_start_dma(int lch)
> > * This will always fail on ES1.0
> > */
> > if (cpu_is_omap24xx())
> > - l |= OMAP_DMA_CCR_EN;
> in code comment for errata helps over time I guess.. could be my pet peeve.
> > + l |= OMAP_DMA_CCR_BUFFERING_DISABLE;
>
Definitely. Unfortunately I don't have a 24xx TRM or errata so I cannot
check it. This workaround was introduced by a commit 1a8bfa so I think
it originated from pre-git history or from some inhouse tree.
--
Jarkko
next prev parent reply other threads:[~2010-10-01 9:20 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-01 6:39 [PATCH 0/2] OMAP2/3: DMA: FIFO drain errata fixes Peter Ujfalusi
2010-10-01 6:39 ` [PATCH 1/2] omap: dma: Fix buffering disable bit setting for omap24xx Peter Ujfalusi
2010-10-01 7:47 ` Nishanth Menon
2010-10-01 9:20 ` Jarkko Nikula [this message]
2010-10-01 6:39 ` [PATCH 2/2] OMAP3: DMA: Errata: sDMA FIFO draining does not finish Peter Ujfalusi
2010-10-01 7:00 ` Jarkko Nikula
2010-10-01 7:45 ` Nishanth Menon
2010-10-01 8:51 ` Peter Ujfalusi
2010-10-01 9:23 ` Nishanth Menon
2010-10-01 10:40 ` Peter Ujfalusi
2010-10-01 9:29 ` G, Manjunath Kondaiah
2010-10-01 9:43 ` Nishanth Menon
2010-10-01 9:45 ` G, Manjunath Kondaiah
2010-10-01 10:43 ` Peter Ujfalusi
2010-10-01 10:41 ` Peter Ujfalusi
2010-10-01 11:09 ` G, Manjunath Kondaiah
2010-10-01 11:43 ` Jarkko Nikula
2010-10-01 11:48 ` Jarkko Nikula
2010-10-01 17:02 ` Tony Lindgren
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