From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Warren Subject: Re: [PATCHv5 1/3] ARM: tegra: Add Tegra AHB driver Date: Tue, 08 May 2012 13:45:59 -0600 Message-ID: <4FA977F7.9080806@wwwdotorg.org> References: <201205070859.29174.arnd@arndb.de><20120507.122333.2024326166703361049.hdoyu@nvidia.com><201205071024.48958.arnd@arndb.de> <20120507.143647.508182574757518311.hdoyu@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20120507.143647.508182574757518311.hdoyu-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org> Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Hiroshi Doyu Cc: "arnd-r2nGTMty4D4@public.gmane.org" , "linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org" , "linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org" , "balbi-l0cyMroinI0@public.gmane.org" , "grant.likely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org" , "rob.herring-bsGFqQB8/DxBDgjK7y7TUQ@public.gmane.org" , "rob-VoJi6FS/r0vR7s880joybQ@public.gmane.org" , "ccross-z5hGa2qSFaRBDgjK7y7TUQ@public.gmane.org" , "olof-nZhT3qVonbNeoWH0uzbU5w@public.gmane.org" , "gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org" , "ohad-Ix1uc/W3ht7QT0dZR+AlfA@public.gmane.org" , "linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org" , "linville-2XuSBdqkA4R54TAoqtyWWQ@public.gmane.org" , "myungjoo.ham-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org" , "devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org" , "linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" lin List-Id: linux-tegra@vger.kernel.org On 05/07/2012 05:36 AM, Hiroshi Doyu wrote: ... > Tegra AHB Bus conforms to the AMBA Specification (Rev 2.0) Advanced > High-performance Bus (AHB) architecture. > > The AHB Arbiter controls AHB bus master arbitration. This effectively > forms a second level of arbitration for access to the memory > controller through the AHB Slave Memory device. The AHB pre-fetch > logic can be configured to enhance performance for devices doing > sequential access. Each AHB master is assigned to either the high or > low priority bin. Both Tegra20/30 have this AHB bus. I've applied this (minus the Change-Id line) and the other two patches to Tegra's for-next branch. I'll let it sit there for a day or two before sending a pull request into arm-soc for 3.5; hopefully it's not too late for that. From mboxrd@z Thu Jan 1 00:00:00 1970 From: swarren@wwwdotorg.org (Stephen Warren) Date: Tue, 08 May 2012 13:45:59 -0600 Subject: [PATCHv5 1/3] ARM: tegra: Add Tegra AHB driver In-Reply-To: <20120507.143647.508182574757518311.hdoyu@nvidia.com> References: <201205070859.29174.arnd@arndb.de><20120507.122333.2024326166703361049.hdoyu@nvidia.com><201205071024.48958.arnd@arndb.de> <20120507.143647.508182574757518311.hdoyu@nvidia.com> Message-ID: <4FA977F7.9080806@wwwdotorg.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 05/07/2012 05:36 AM, Hiroshi Doyu wrote: ... > Tegra AHB Bus conforms to the AMBA Specification (Rev 2.0) Advanced > High-performance Bus (AHB) architecture. > > The AHB Arbiter controls AHB bus master arbitration. This effectively > forms a second level of arbitration for access to the memory > controller through the AHB Slave Memory device. The AHB pre-fetch > logic can be configured to enhance performance for devices doing > sequential access. Each AHB master is assigned to either the high or > low priority bin. Both Tegra20/30 have this AHB bus. I've applied this (minus the Change-Id line) and the other two patches to Tegra's for-next branch. I'll let it sit there for a day or two before sending a pull request into arm-soc for 3.5; hopefully it's not too late for that. From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756807Ab2EHTqH (ORCPT ); Tue, 8 May 2012 15:46:07 -0400 Received: from avon.wwwdotorg.org ([70.85.31.133]:50839 "EHLO avon.wwwdotorg.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754583Ab2EHTqF (ORCPT ); Tue, 8 May 2012 15:46:05 -0400 Message-ID: <4FA977F7.9080806@wwwdotorg.org> Date: Tue, 08 May 2012 13:45:59 -0600 From: Stephen Warren User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:12.0) Gecko/20120430 Thunderbird/12.0.1 MIME-Version: 1.0 To: Hiroshi Doyu CC: "arnd@arndb.de" , "linux@arm.linux.org.uk" , "linux-tegra@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "balbi@ti.com" , "grant.likely@secretlab.ca" , "rob.herring@calxeda.com" , "rob@landley.net" , "ccross@android.com" , "olof@lixom.net" , "gregkh@linuxfoundation.org" , "ohad@wizery.com" , "linus.walleij@linaro.org" , "linville@tuxdriver.com" , "myungjoo.ham@samsung.com" , "devicetree-discuss@lists.ozlabs.org" , "linux-doc@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: Re: [PATCHv5 1/3] ARM: tegra: Add Tegra AHB driver References: <201205070859.29174.arnd@arndb.de><20120507.122333.2024326166703361049.hdoyu@nvidia.com><201205071024.48958.arnd@arndb.de> <20120507.143647.508182574757518311.hdoyu@nvidia.com> In-Reply-To: <20120507.143647.508182574757518311.hdoyu@nvidia.com> X-Enigmail-Version: 1.5pre Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 05/07/2012 05:36 AM, Hiroshi Doyu wrote: ... > Tegra AHB Bus conforms to the AMBA Specification (Rev 2.0) Advanced > High-performance Bus (AHB) architecture. > > The AHB Arbiter controls AHB bus master arbitration. This effectively > forms a second level of arbitration for access to the memory > controller through the AHB Slave Memory device. The AHB pre-fetch > logic can be configured to enhance performance for devices doing > sequential access. Each AHB master is assigned to either the high or > low priority bin. Both Tegra20/30 have this AHB bus. I've applied this (minus the Change-Id line) and the other two patches to Tegra's for-next branch. I'll let it sit there for a day or two before sending a pull request into arm-soc for 3.5; hopefully it's not too late for that.