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,URIBL_BLOCKED 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 CDCCBC2BC61 for ; Tue, 30 Oct 2018 16:43:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6D4FB20664 for ; Tue, 30 Oct 2018 16:43:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6D4FB20664 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lucaceresoli.net 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 S1727715AbeJaBh7 (ORCPT ); Tue, 30 Oct 2018 21:37:59 -0400 Received: from srv-hp10-72.netsons.net ([94.141.22.72]:41276 "EHLO srv-hp10-72.netsons.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727429AbeJaBh6 (ORCPT ); Tue, 30 Oct 2018 21:37:58 -0400 Received: from [109.168.11.45] (port=36330 helo=[192.168.101.125]) by srv-hp10.netsons.net with esmtpsa (TLSv1.2:ECDHE-RSA-AES128-GCM-SHA256:128) (Exim 4.91) (envelope-from ) id 1gHX7E-00ASkR-87; Tue, 30 Oct 2018 17:43:40 +0100 Subject: Re: [PATCH 1/7] dt-bindings: mfd: ds90ux9xx: add description of TI DS90Ux9xx ICs To: Vladimir Zapolskiy , Lee Jones , Linus Walleij , Rob Herring Cc: Marek Vasut , Laurent Pinchart , Wolfram Sang , devicetree@vger.kernel.org, linux-gpio@vger.kernel.org, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, Sandeep Jain , Vladimir Zapolskiy References: <20181008211205.2900-1-vz@mleia.com> <20181008211205.2900-2-vz@mleia.com> From: Luca Ceresoli Message-ID: Date: Tue, 30 Oct 2018 17:43:41 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.2.1 MIME-Version: 1.0 In-Reply-To: <20181008211205.2900-2-vz@mleia.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - srv-hp10.netsons.net X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - lucaceresoli.net X-Get-Message-Sender-Via: srv-hp10.netsons.net: authenticated_id: luca@lucaceresoli.net X-Authenticated-Sender: srv-hp10.netsons.net: luca@lucaceresoli.net X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Vladimir, On 08/10/18 23:11, Vladimir Zapolskiy wrote: > From: Sandeep Jain > > The change adds device tree binding description of TI DS90Ux9xx > series of serializer and deserializer controllers which support video, > audio and control data transmission over FPD-III Link connection. [...] > +Example: > + > +serializer: serializer@c { > + compatible = "ti,ds90ub927q", "ti,ds90ux9xx"; > + reg = <0xc>; > + power-gpios = <&gpio5 12 GPIO_ACTIVE_HIGH>; > + ti,backward-compatible-mode = <0>; > + ti,low-frequency-mode = <0>; > + ti,pixel-clock-edge = <0>; > + ... > +} > + > +deserializer: deserializer@3c { > + compatible = "ti,ds90ub940q", "ti,ds90ux9xx"; > + reg = <0x3c>; > + power-gpios = <&gpio6 31 GPIO_ACTIVE_HIGH>; > + ... > +} Interesting patchset, thanks. At the moment I'm working on a driver for the TI FPD-III camera serdes chips [0]. At very first sight they have many commonalities with the display chipsets [1] you implemented. Did you have a look into them? Do you think they could be implemented by the same driver? The camera serdes chips lack some features found on the display chips (e.g. audio, white balance). OTOH they have dual or quad input deserializers, which adds complexity. I'm commenting on the details in reply to the following patches documenting the DT bindings. [0] http://www.ti.com/interface/fpd-link-serdes/camera-serdes/overview.html [1] http://www.ti.com/interface/fpd-link-serdes/display-serdes/overview.html Bye, -- Luca