From: Timur Tabi <timur-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
To: Scott Wood <scottwood-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
Cc: Yoder Stuart-B08248
<B08248-KZfg59tc24xl57MIdRCFDg@public.gmane.org>,
devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org
Subject: Re: question about dma-ranges
Date: Wed, 27 Oct 2010 14:47:37 -0500 [thread overview]
Message-ID: <4CC881D9.6020808@freescale.com> (raw)
In-Reply-To: <20101027144602.2c5ef098-N/eSCTBpGwP7j4BuCOFQISmX4OfbXNuMKnGXBo5VDl8@public.gmane.org>
Scott Wood wrote:
> Or can the QE code just know about that because it only has 32-bit
> registers/descriptor fields for DMA addresses? I.e. it is a limitation
> of all instances of QE, not just as integrated in this system.
It's a limitation of the QE registers -- they're only 32-bit. If we ever
produce a new QE that has bigger registers, we can use the compatible property
to distinguish between them.
--
Timur Tabi
Linux kernel developer at Freescale
prev parent reply other threads:[~2010-10-27 19:47 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-27 0:48 question about dma-ranges Yoder Stuart-B08248
[not found] ` <9696D7A991D0824DBA8DFAC74A9C5FA306911C5F-ofAVchDyotYzzZk0BCvKg5jmvxFtTJ+o0e7PPNI6Mm0@public.gmane.org>
2010-10-27 0:51 ` Mitch Bradley
[not found] ` <4CC77784.2070701-D5eQfiDGL7eakBO8gow8eQ@public.gmane.org>
2010-10-27 1:37 ` Timur Tabi
[not found] ` <AANLkTikTu_p0-Uk7=FuUay4mvCEEU0e9V5eY6bjuK5RQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-10-27 2:42 ` David Gibson
2010-10-27 19:46 ` Scott Wood
[not found] ` <20101027144602.2c5ef098-N/eSCTBpGwP7j4BuCOFQISmX4OfbXNuMKnGXBo5VDl8@public.gmane.org>
2010-10-27 19:47 ` Timur Tabi [this message]
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