From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnd Bergmann Subject: Re: [PATCHv5 1/3] ARM: tegra: Add Tegra AHB driver Date: Mon, 7 May 2012 08:04:28 +0000 Message-ID: <201205070804.29154.arnd@arndb.de> References: <1336373032-16881-1-git-send-email-hdoyu@nvidia.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-15" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1336373032-16881-1-git-send-email-hdoyu@nvidia.com> Sender: linux-doc-owner@vger.kernel.org To: Hiroshi DOYU Cc: swarren@wwwdotorg.org, linux-tegra@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Felipe Balbi , Grant Likely , Rob Herring , Rob Landley , Colin Cross , Olof Johansson , Russell King , Greg Kroah-Hartman , Ohad Ben-Cohen , Linus Walleij , "John W. Linville" , MyungJoo Ham , devicetree-discuss@lists.ozlabs.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-tegra@vger.kernel.org On Monday 07 May 2012, 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. > > Some of configuration params could be passed from DT too if needed. > > Signed-off-by: Hiroshi DOYU > Cc: Felipe Balbi > Cc: Arnd Bergmann Acked-by: Arnd Bergmann for the driver, but please fix the issue pointed out by Russell. Arnd From mboxrd@z Thu Jan 1 00:00:00 1970 From: arnd@arndb.de (Arnd Bergmann) Date: Mon, 7 May 2012 08:04:28 +0000 Subject: [PATCHv5 1/3] ARM: tegra: Add Tegra AHB driver In-Reply-To: <1336373032-16881-1-git-send-email-hdoyu@nvidia.com> References: <1336373032-16881-1-git-send-email-hdoyu@nvidia.com> Message-ID: <201205070804.29154.arnd@arndb.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Monday 07 May 2012, 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. > > Some of configuration params could be passed from DT too if needed. > > Signed-off-by: Hiroshi DOYU > Cc: Felipe Balbi > Cc: Arnd Bergmann Acked-by: Arnd Bergmann for the driver, but please fix the issue pointed out by Russell. Arnd