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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no 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 EFF5EC433FF for ; Wed, 14 Aug 2019 22:22:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C7AE0208C2 for ; Wed, 14 Aug 2019 22:22:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729267AbfHNWWk (ORCPT ); Wed, 14 Aug 2019 18:22:40 -0400 Received: from foss.arm.com ([217.140.110.172]:34496 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725895AbfHNWWk (ORCPT ); Wed, 14 Aug 2019 18:22:40 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id ABC72344; Wed, 14 Aug 2019 15:22:39 -0700 (PDT) Received: from [10.1.196.61] (tuskha01.cambridge.arm.com [10.1.196.61]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 70C7C3F718; Wed, 14 Aug 2019 15:22:38 -0700 (PDT) Subject: Re: [PATCH 1/4] mailbox: arm_mhuv2: add device tree binding documentation To: Sudeep Holla , Jassi Brar Cc: Morten Borup Petersen , Linux Kernel Mailing List , "tushar.2nov@gmail.com" , "nd@arm.com" , Morten Borup Petersen , Rob Herring , Mark Rutland , Devicetree List References: <20190717192616.1731-1-tushar.khandelwal@arm.com> <20190717192616.1731-2-tushar.khandelwal@arm.com> <20190814100518.GA21898@e107155-lin> <20190814165133.GA8346@e107155-lin> From: "tushar.khandelwal@arm.com" Message-ID: <55dcfe02-8c2c-4f9a-b467-bcac0d6b0fd7@arm.com> Date: Wed, 14 Aug 2019 23:22:37 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <20190814165133.GA8346@e107155-lin> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 14/08/2019 17:51, Sudeep Holla wrote: > On Wed, Aug 14, 2019 at 09:52:25AM -0500, Jassi Brar wrote: >> On Wed, Aug 14, 2019 at 5:05 AM Sudeep Holla wrote: >>> >>> On Tue, Aug 13, 2019 at 11:36:56AM -0500, Jassi Brar wrote: >>> [...] >>> >>>>>>> >>>>>>> As mentioned in the response to your initial comment, the driver does >>>>>>> not currently support mixing protocols. >>>>>>> >>>>>> Thanks for acknowledging that limitation. But lets also address it. >>>>>> >>>>> >>>>> We are hesitant to dedicate time to developing mixing protocols given >>>>> that we don't have any current usecase nor any current platform which >>>>> would support this. >>>>> >>>> Can you please share the client code against which you tested this driver? >>>> From my past experience, I realise it is much more efficient to tidyup >>>> the code myself, than endlessly trying to explain the benefits. >>>> >>> >>> Thanks for the patience and offer. >>> >> Ok, but the offer is to Morten for MHUv2 driver. >> >>> Can we try the same with MHUv1 and SCMI >>> upstream driver. >>> >> MHUv1 driver is fine as it is. >> I did try my best to keep you from messing the SCMI driver, without success >> https://lkml.org/lkml/2017/8/7/924 > > I disagree, you haven't told me how to address the usecase which I mentioned > with the abstraction/multiplexer on top of MHU as you have been suggesting. > > I am sure MHUv2 will have the same usecase. > MHUv2 driver is addressing existing (door-bell) use case as well as new (multi-word) use case using new IP features. > -- > Regards, > Sudeep >