From: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
To: Linus Walleij <linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Cc: Catalin Marinas <catalin.marinas-5wv7dgnIgG8@public.gmane.org>,
"linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org"
<linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>,
Mark Rutland <Mark.Rutland-5wv7dgnIgG8@public.gmane.org>,
"devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Pawel Moll <Pawel.Moll-5wv7dgnIgG8@public.gmane.org>,
Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Marc Zyngier <Marc.Zyngier-5wv7dgnIgG8@public.gmane.org>,
Will Deacon <Will.Deacon-5wv7dgnIgG8@public.gmane.org>,
Feng Kan <fkan-qTEPVZfXA3Y@public.gmane.org>,
Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
Subject: Re: [PATCH v2] ARM: realview: basic device tree implementation
Date: Thu, 22 May 2014 22:35:51 +0200 [thread overview]
Message-ID: <6096979.7R8fyMRDdE@wuerfel> (raw)
In-Reply-To: <CACRpkdZX=UFhMfUn68hA+s2FLGRYy_dmjRng_fHtAQEhah0oRA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
On Thursday 22 May 2014 20:52:38 Linus Walleij wrote:
> On Thu, May 22, 2014 at 5:49 PM, Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org> wrote:
> > On Thursday 22 May 2014 15:45:03 Catalin Marinas wrote:
>
> >> Anyway, I don't think we have any streaming DMA used on these RealView
> >> boards.
> >
> > Yes, I think that is correct. MMCI, SSP and serial could all use
> > DMA but are not configured to do it.
>
> PB1176 has no working DMA (borked DMA hardware), the PB11MPCore
> actually has working DMA but only on UART TX and maybe AACI
> (haven't tested) no clue about the Cortex boards PBA8 and PBX though.
I don't see any DMA data passed to the pl011 driver for PB11MPCore
or any other realview board, so even if it works, we don't use it.
The AACI driver doesn't seem to support DMA.
PBA8 and PBX don't need the hack because they don't have a broken
l2x0.
Arnd
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next prev parent reply other threads:[~2014-05-22 20:35 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-08 22:08 [PATCH v2] ARM: realview: basic device tree implementation Linus Walleij
[not found] ` <1399586896-16906-1-git-send-email-linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2014-05-09 10:44 ` Arnd Bergmann
[not found] ` <201405091244.02066.arnd-r2nGTMty4D4@public.gmane.org>
2014-05-22 7:41 ` Linus Walleij
[not found] ` <CACRpkdb8c=k3Ky=TisNdzycc3owJsNSQmSTu03RR5E0QvE0KZA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-05-22 8:31 ` Arnd Bergmann
2014-05-22 13:04 ` Linus Walleij
[not found] ` <CACRpkdYE0Fb+HezqgDbVcqQmWwn7QL2+RWSRyAigv2qcMp2qFQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-05-22 13:38 ` Arnd Bergmann
2014-05-22 14:45 ` Catalin Marinas
[not found] ` <20140522144503.GA27931-5wv7dgnIgG8@public.gmane.org>
2014-05-22 15:49 ` Arnd Bergmann
2014-05-22 16:09 ` Catalin Marinas
2014-05-22 18:09 ` Nicolas Pitre
[not found] ` <alpine.LFD.2.11.1405221406100.17310-fMhRO7WWcppj+hNMo8g0rg@public.gmane.org>
2014-05-22 18:26 ` Arnd Bergmann
2014-05-22 18:39 ` Nicolas Pitre
[not found] ` <alpine.LFD.2.11.1405221431370.17310-fMhRO7WWcppj+hNMo8g0rg@public.gmane.org>
2014-05-22 20:25 ` Arnd Bergmann
2014-05-22 18:52 ` Linus Walleij
[not found] ` <CACRpkdZX=UFhMfUn68hA+s2FLGRYy_dmjRng_fHtAQEhah0oRA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-05-22 20:35 ` Arnd Bergmann [this message]
2014-05-29 9:38 ` Linus Walleij
2014-05-22 22:34 ` Sebastian Hesselbarth
[not found] ` <537E7B83.4020900-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2014-05-29 9:44 ` Linus Walleij
[not found] ` <CACRpkdap1U19EiULnq11udhY91UnnNu_-5MnLby3idbdjzBj4Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-05-29 10:10 ` Sebastian Hesselbarth
[not found] ` <53870787.3030202-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2014-05-29 14:13 ` Linus Walleij
[not found] ` <CACRpkdYVe+++Qb-CWrWwM1zDHxNqmpE0CFzp959Q40Zqb5sUEg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-05-29 14:47 ` Sebastian Hesselbarth
2014-05-22 13:17 ` Rob Herring
[not found] ` <CAL_JsqLN_f1uvrY6w7J7ZcR9pfM0_XKYMQ5YU8F4yAcMW+oDGw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-05-22 13:30 ` Linus Walleij
[not found] ` <CACRpkdaqsVUDA+6NC=EQmxcnDAnJEfPNYoptrEv=nq=eZEbA_g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-05-22 13:36 ` Arnd Bergmann
2014-05-28 22:47 ` Rob Herring
2014-05-22 13:41 ` Jason Cooper
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