From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 32119C0018C for ; Mon, 7 Dec 2020 18:24:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E720223888 for ; Mon, 7 Dec 2020 18:24:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726120AbgLGSXv (ORCPT ); Mon, 7 Dec 2020 13:23:51 -0500 Received: from mga02.intel.com ([134.134.136.20]:5050 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725852AbgLGSXv (ORCPT ); Mon, 7 Dec 2020 13:23:51 -0500 IronPort-SDR: 7U+6VjvvlgE29G6zdeQlgp2yrYz4sFJQD0aN/QzsFGaAIr0jPvvNjO9eZByGKisiBOOJmXbGXJ qH5dvWR7JvWA== X-IronPort-AV: E=McAfee;i="6000,8403,9828"; a="160792547" X-IronPort-AV: E=Sophos;i="5.78,400,1599548400"; d="scan'208";a="160792547" Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Dec 2020 10:22:05 -0800 IronPort-SDR: LJpIOl5qR3FbYUO6GpoIFjBgNfoBKfI9nILXpkiVbNmPIE2cwe4CBMx+aKHMiSLNbd9lF6n3GV MEf4AfTulbig== X-IronPort-AV: E=Sophos;i="5.78,400,1599548400"; d="scan'208";a="551915231" Received: from smtp.ostc.intel.com ([10.54.29.231]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Dec 2020 10:22:04 -0800 Received: from localhost (mtg-dev.jf.intel.com [10.54.74.10]) by smtp.ostc.intel.com (Postfix) with ESMTP id D3A0A6363; Mon, 7 Dec 2020 10:22:04 -0800 (PST) Date: Mon, 7 Dec 2020 10:22:04 -0800 From: mark gross To: Rob Herring Cc: mgross@linux.intel.com, markgross@kernel.org, arnd@arndb.de, bp@suse.de, damien.lemoal@wdc.com, dragan.cvetic@xilinx.com, gregkh@linuxfoundation.org, corbet@lwn.net, leonard.crestez@nxp.com, palmerdabbelt@google.com, paul.walmsley@sifive.com, peng.fan@nxp.com, shawnguo@kernel.org, linux-kernel@vger.kernel.org, Daniele Alessandrelli , devicetree@vger.kernel.org Subject: Re: [PATCH 02/22] dt-bindings: Add bindings for Keem Bay IPC driver Message-ID: <20201207182204.GC49179@linux.intel.com> Reply-To: mgross@linux.intel.com References: <20201201223511.65542-1-mgross@linux.intel.com> <20201201223511.65542-3-mgross@linux.intel.com> <20201207160152.GB351233@robh.at.kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201207160152.GB351233@robh.at.kernel.org> User-Agent: Mutt/1.9.4 (2018-02-28) Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On Mon, Dec 07, 2020 at 10:01:52AM -0600, Rob Herring wrote: > On Tue, Dec 01, 2020 at 02:34:51PM -0800, mgross@linux.intel.com wrote: > > From: Daniele Alessandrelli > > > > Add DT binding documentation for the Intel Keem Bay IPC driver, which > > enables communication between the Computing Sub-System (CSS) and the > > Multimedia Sub-System (MSS) of the Intel Movidius SoC code named Keem > > Bay. > > > > Cc: devicetree@vger.kernel.org > > Reviewed-by: Mark Gross > > Signed-off-by: Daniele Alessandrelli > > --- > > .../bindings/soc/intel/intel,keembay-ipc.yaml | 63 +++++++++++++++++++ > > 1 file changed, 63 insertions(+) > > create mode 100644 Documentation/devicetree/bindings/soc/intel/intel,keembay-ipc.yaml > > > > diff --git a/Documentation/devicetree/bindings/soc/intel/intel,keembay-ipc.yaml b/Documentation/devicetree/bindings/soc/intel/intel,keembay-ipc.yaml > > new file mode 100644 > > index 000000000000..6e21c54d8f34 > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/soc/intel/intel,keembay-ipc.yaml > > @@ -0,0 +1,63 @@ > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > > +# Copyright (C) 2020 Intel Corporation > > +%YAML 1.2 > > +--- > > +$id: "http://devicetree.org/schemas/soc/intel/intel,keembay-ipc.yaml#" > > +$schema: "http://devicetree.org/meta-schemas/core.yaml#" > > + > > +title: Keem Bay IPC > > + > > +maintainers: > > + - Daniele Alessandrelli > > + > > +description: > > + The Keem Bay IPC driver enables Inter-Processor Communication (IPC) with the > > + Visual Processor Unit (VPU) embedded in the Intel Movidius SoC code named > > + Keem Bay. > > Sounds like a mailbox. Its a multi-channel mailbox like thing with priority channel support. > > What's the relationship between this and the xlink thing? Xlink is a SW abstraction to allow multiple user access to the VPU as well as enabling use cases where a Keem Bay is used as an accelerator add in card as well as a simple SBC type of design. The xlink stuff sits on top of the IPC stuff. --mark