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=-5.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, 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 5F7FDC4363A for ; Thu, 29 Oct 2020 14:50:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 16DDD20738 for ; Thu, 29 Oct 2020 14:50:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727526AbgJ2Ouy (ORCPT ); Thu, 29 Oct 2020 10:50:54 -0400 Received: from retiisi.eu ([95.216.213.190]:59088 "EHLO hillosipuli.retiisi.eu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726521AbgJ2Ouy (ORCPT ); Thu, 29 Oct 2020 10:50:54 -0400 Received: from valkosipuli.localdomain (valkosipuli.retiisi.org.uk [IPv6:2a01:4f9:c010:4572::80:2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by hillosipuli.retiisi.eu (Postfix) with ESMTPS id 41139634C87; Thu, 29 Oct 2020 16:50:12 +0200 (EET) Received: from sailus by valkosipuli.localdomain with local (Exim 4.92) (envelope-from ) id 1kY9Fl-0001vS-EP; Thu, 29 Oct 2020 16:50:13 +0200 Date: Thu, 29 Oct 2020 16:50:13 +0200 From: Sakari Ailus To: Sowjanya Komatineni Cc: Hans Verkuil , Thierry Reding , linux-media@vger.kernel.org Subject: Re: Suggestion regarding x8 gang mode device tree changes Message-ID: <20201029145013.GA6899@valkosipuli.retiisi.org.uk> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Hi Sowjanya, On Wed, Oct 28, 2020 at 06:48:59PM -0700, Sowjanya Komatineni wrote: > Hi Sakari, > > Missed to add you to below patch series for HDMI2CSI bridge support > > https://patchwork.kernel.org/project/linux-media/cover/1603768763-25590-1-git-send-email-skomatineni@nvidia.com/ > > Patch-10 of this series is for x8 capture from HDMI2CSI bridge. > > Would like to get your suggestion on x8 gang/combined ports capture > implementation. The majority of CSI-2 receiver devices support partitioning the lanes among different PHYs in various ways. They do support usually up to four lanes, but adding four more lanes is not a reason for making the API different. So instead, you should implement this as a single port that simply has 8 lanes. -- Kind regards, Sakari Ailus