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From: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
To: Santosh Shilimkar <santosh.shilimkar-l0cyMroinI0@public.gmane.org>
Cc: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	magnus.damm-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
	linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org,
	grant.likely-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org,
	robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
	Grygorii Strashko
	<grygorii.strashko-l0cyMroinI0@public.gmane.org>,
	Russell King <linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org>,
	Olof Johansson <olof-nZhT3qVonbNeoWH0uzbU5w@public.gmane.org>
Subject: Re: [PATCH v2 5/7] ARM: of: introduce common routine for DMA configuration
Date: Fri, 28 Feb 2014 16:31:05 +0100	[thread overview]
Message-ID: <11548178.4dQyMzBAP8@wuerfel> (raw)
In-Reply-To: <5310A5F1.9070901-l0cyMroinI0@public.gmane.org>

On Friday 28 February 2014 10:06:25 Santosh Shilimkar wrote:
> I made that LPAE specific assuming the 32 machines anyway are
> happy with default as they are today. We can keep CONFIG_ARM
> and handle the special case in machine platform notifier.

I think all other machines that support LPAE can also run with
LPAE disabled and still use coherent DMA, they may just not
support all the available RAM.

	Arnd
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WARNING: multiple messages have this Message-ID (diff)
From: arnd@arndb.de (Arnd Bergmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 5/7] ARM: of: introduce common routine for DMA configuration
Date: Fri, 28 Feb 2014 16:31:05 +0100	[thread overview]
Message-ID: <11548178.4dQyMzBAP8@wuerfel> (raw)
In-Reply-To: <5310A5F1.9070901@ti.com>

On Friday 28 February 2014 10:06:25 Santosh Shilimkar wrote:
> I made that LPAE specific assuming the 32 machines anyway are
> happy with default as they are today. We can keep CONFIG_ARM
> and handle the special case in machine platform notifier.

I think all other machines that support LPAE can also run with
LPAE disabled and still use coherent DMA, they may just not
support all the available RAM.

	Arnd

  parent reply	other threads:[~2014-02-28 15:31 UTC|newest]

Thread overview: 58+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-02-27 21:17 [PATCH v2 0/7] ARM: dma: Support dma-ranges and dma-coherent Santosh Shilimkar
2014-02-27 21:17 ` Santosh Shilimkar
2014-02-27 21:17 ` [PATCH v2 1/7] ARM: mm: Introduce archdata.dma_pfn_offset Santosh Shilimkar
2014-02-27 21:17   ` Santosh Shilimkar
     [not found]   ` <1393535872-20915-2-git-send-email-santosh.shilimkar-l0cyMroinI0@public.gmane.org>
2014-02-28  9:30     ` Arnd Bergmann
2014-02-28  9:30       ` Arnd Bergmann
2014-03-05  4:45     ` Linus Walleij
2014-03-05  4:45       ` Linus Walleij
     [not found]       ` <CACRpkdaRgf2yn51HYnJHBVKdrGdYhwSr0yf2GLmT3DwzmPbMDA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-03-05  6:37         ` Santosh Shilimkar
2014-03-05  6:37           ` Santosh Shilimkar
     [not found] ` <1393535872-20915-1-git-send-email-santosh.shilimkar-l0cyMroinI0@public.gmane.org>
2014-02-27 21:17   ` [PATCH v2 2/7] ARM: mm: Remove unsed dma_to_virt() Santosh Shilimkar
2014-02-27 21:17     ` Santosh Shilimkar
     [not found]     ` <1393535872-20915-3-git-send-email-santosh.shilimkar-l0cyMroinI0@public.gmane.org>
2014-02-28  9:31       ` Arnd Bergmann
2014-02-28  9:31         ` Arnd Bergmann
2014-03-07  5:59     ` Greg Ungerer
2014-03-07  5:59       ` Greg Ungerer
2014-02-27 21:17   ` [PATCH v2 3/7] dma: of: introduce of_dma_get_range() helper Santosh Shilimkar
2014-02-27 21:17     ` Santosh Shilimkar
2014-02-27 21:17   ` [PATCH v2 4/7] dma: of: introduce of_dma_is_coherent() helper Santosh Shilimkar
2014-02-27 21:17     ` Santosh Shilimkar
2014-02-28  9:39     ` Arnd Bergmann
2014-02-28  9:39       ` Arnd Bergmann
2014-02-28 14:17       ` Santosh Shilimkar
2014-02-28 14:17         ` Santosh Shilimkar
     [not found]         ` <53109A64.9030701-l0cyMroinI0@public.gmane.org>
2014-03-03  1:49           ` Catalin Marinas
2014-03-03  1:49             ` Catalin Marinas
2014-02-28 15:14       ` Rob Herring
2014-02-28 15:14         ` Rob Herring
     [not found]         ` <CAL_JsqL6-hoD4F7+adPhsOJXeM5f+wpEuBWg_6AWqj3k2v0NEw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-02-28 15:17           ` Santosh Shilimkar
2014-02-28 15:17             ` Santosh Shilimkar
2014-02-28 15:24           ` Arnd Bergmann
2014-02-28 15:24             ` Arnd Bergmann
2014-03-03 14:04             ` Rob Herring
2014-03-03 14:04               ` Rob Herring
2014-03-04 15:21               ` Will Deacon
2014-03-04 15:21                 ` Will Deacon
2014-02-27 21:17   ` [PATCH v2 5/7] ARM: of: introduce common routine for DMA configuration Santosh Shilimkar
2014-02-27 21:17     ` Santosh Shilimkar
2014-02-28 10:00     ` Arnd Bergmann
2014-02-28 10:00       ` Arnd Bergmann
2014-02-28 11:49       ` Grygorii Strashko
2014-02-28 11:49         ` Grygorii Strashko
2014-02-28 11:14         ` Arnd Bergmann
2014-02-28 11:14           ` Arnd Bergmann
2014-02-28 15:06       ` Santosh Shilimkar
2014-02-28 15:06         ` Santosh Shilimkar
     [not found]         ` <5310A5F1.9070901-l0cyMroinI0@public.gmane.org>
2014-02-28 15:31           ` Arnd Bergmann [this message]
2014-02-28 15:31             ` Arnd Bergmann
2014-02-28 15:35             ` Santosh Shilimkar
2014-02-28 15:35               ` Santosh Shilimkar
2014-03-07  3:15       ` Linus Walleij
2014-03-07  3:15         ` Linus Walleij
     [not found]     ` <1393535872-20915-6-git-send-email-santosh.shilimkar-l0cyMroinI0@public.gmane.org>
2014-02-28 14:56       ` Rob Herring
2014-02-28 14:56         ` Rob Herring
2014-02-27 21:17   ` [PATCH v2 6/7] ARM: dts: keystone: Use dma-ranges property Santosh Shilimkar
2014-02-27 21:17     ` Santosh Shilimkar
2014-02-27 21:17   ` [PATCH v2 7/7] ARM: dts: keystone: Udate USB node for dma properties Santosh Shilimkar
2014-02-27 21:17     ` Santosh Shilimkar

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