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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS 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 D01A2C28CF8 for ; Sat, 13 Oct 2018 12:33:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8DDD920895 for ; Sat, 13 Oct 2018 12:33:32 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8DDD920895 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=mentor.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726512AbeJMUK3 (ORCPT ); Sat, 13 Oct 2018 16:10:29 -0400 Received: from relay1.mentorg.com ([192.94.38.131]:37826 "EHLO relay1.mentorg.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726255AbeJMUK2 (ORCPT ); Sat, 13 Oct 2018 16:10:28 -0400 Received: from nat-ies.mentorg.com ([192.94.31.2] helo=SVR-IES-MBX-04.mgc.mentorg.com) by relay1.mentorg.com with esmtps (TLSv1.2:ECDHE-RSA-AES256-SHA384:256) id 1gBJ6k-0003b8-LB from Vladimir_Zapolskiy@mentor.com ; Sat, 13 Oct 2018 05:33:26 -0700 Received: from [137.202.108.125] (137.202.0.90) by SVR-IES-MBX-04.mgc.mentorg.com (139.181.222.4) with Microsoft SMTP Server (TLS) id 15.0.1320.4; Sat, 13 Oct 2018 13:33:22 +0100 Subject: Re: [PATCH 4/7] mfd: ds90ux9xx: add TI DS90Ux9xx de-/serializer MFD driver To: , Laurent Pinchart References: <20181008211205.2900-1-vz@mleia.com> <20181008211205.2900-5-vz@mleia.com> <20181012060314.GU4939@dell> <63733d2e-f95e-8894-f2b0-0b551b5cfeeb@mentor.com> <20181012083924.GW4939@dell> <506c03d7-7986-44dd-3290-92d16a8106ad@mentor.com> <4a807a53-1592-a895-f140-54e7acc473b3@ideasonboard.com> CC: Lee Jones , Vladimir Zapolskiy , Linus Walleij , Rob Herring , Marek Vasut , Wolfram Sang , , , , From: Vladimir Zapolskiy Message-ID: <646af723-b78b-4481-50d9-e1b8f57abd79@mentor.com> Date: Sat, 13 Oct 2018 15:33:21 +0300 User-Agent: Mozilla/5.0 (X11; Linux i686; rv:45.0) Gecko/20100101 Icedove/45.2.0 MIME-Version: 1.0 In-Reply-To: <4a807a53-1592-a895-f140-54e7acc473b3@ideasonboard.com> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Originating-IP: [137.202.0.90] X-ClientProxiedBy: SVR-IES-MBX-09.mgc.mentorg.com (139.181.222.9) To SVR-IES-MBX-04.mgc.mentorg.com (139.181.222.4) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Kieran, On 10/12/2018 02:47 PM, Kieran Bingham wrote: > Hi Vladimir, > [snip] > > Essentially they are multi purpose buses - which do not yet have a home. > We have used media as a home because of our use case. > > The use case whether they transfer frames from a camera or to a display > are of course closely related, but ultimately covered by two separate > subsystems at the pixel level (DRM vs V4L, or other for other data) > > Perhaps as they are buses - on a level with USB or I2C (except they can > of course carry I2C or Serial as well as 'bi-directional video' etc ), > they are looking for their own subsystem. > > Except I don't think we don't want to add a new subsystem for just one > (or two) devices... > I suppose that the incomplete list includes Maxim GMSL, TI FPD-Link III, SMSC/Microchip MOST (drivers/staging/most -- what's the destination after exiting staging?) an Inova APIX. -- Best wishes, Vladimir