From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Monjalon Subject: Re: [PATCH v4 00/41] Introduce NXP DPAA Bus, Mempool and PMD Date: Fri, 22 Sep 2017 16:19:27 +0200 Message-ID: <2005912.TG1KxgVreU@xps> References: <20170823141213.25476-1-shreyansh.jain@nxp.com> <1563275.iJklTzZNDB@xps> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7Bit Cc: dev@dpdk.org, "ferruh.yigit@intel.com" , Hemant Agrawal To: Shreyansh Jain Return-path: Received: from out1-smtp.messagingengine.com (out1-smtp.messagingengine.com [66.111.4.25]) by dpdk.org (Postfix) with ESMTP id 8E5457CB6 for ; Fri, 22 Sep 2017 16:19:28 +0200 (CEST) In-Reply-To: List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" 22/09/2017 16:00, Shreyansh Jain: > From: Thomas Monjalon [mailto:thomas@monjalon.net] > > At the beginning of fslmc work, I had understood that every NXP SoC were > > connecting components with the same principle which we could call the > > "Freescale bus". > > Then you came with this bus named bus/fslmc, not bus/dpaa2. > > Now I am confused. What is the exact scope of fslmc? Is it just DPAA2? > > My memory is poor. I will have to look through the old emails what happened - but I recall there was a discussion in initial phases about the naming. "fslmc" came out as a name that is what is the real name of the DPAA2 bus. There was initial a confusion if name of bus in Linux Kernel should match or not - but, we realized that bus is *not* device and device name is "dpaa2". > > As for whether fslmc would cover multiple SoC - that is still true. There are multiple SoCs within the DPAA2 umbrella. LS20XX, LS108X series and some more - all of which use the FSLMC bus (DPAA2 architecture, on FSLMC bus, having 'dpaa2' devices). > > There is another architecture, an old one, which are still popular. This is platform type bus which is aptly named 'dpaa' - and here the confusion of bus name and device doesn't appear. (DPAA bus, using DPAA architecture, exposing 'dpaa' devices). > > Exact scope of FSLMC is just DPAA2 architecture based SoCs. There are many here with new coming up. > Exact scope of DPAA bus is just DPAA architecture based SoCs. There are many here. > > Does this clear your doubt to some extent? Yes it is a lot clearer! Thanks Now that I better understand, I think flsmc bus should have been named dpaa2 bus. Is it too late?