From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnd Bergmann Subject: Re: [PATCH v2] ARM: realview: basic device tree implementation Date: Thu, 22 May 2014 22:35:51 +0200 Message-ID: <6096979.7R8fyMRDdE@wuerfel> References: <1399586896-16906-1-git-send-email-linus.walleij@linaro.org> <5057707.jNCXlqf9dH@wuerfel> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7Bit Return-path: In-Reply-To: Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Linus Walleij Cc: Catalin Marinas , "linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org" , Mark Rutland , "devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , Pawel Moll , Rob Herring , Marc Zyngier , Will Deacon , Feng Kan , Thomas Gleixner List-Id: devicetree@vger.kernel.org On Thursday 22 May 2014 20:52:38 Linus Walleij wrote: > On Thu, May 22, 2014 at 5:49 PM, Arnd Bergmann 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 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html