From patchwork Thu Sep 27 14:46:06 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hugues FRUCHET X-Patchwork-Id: 10618117 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A832E14BD for ; Thu, 27 Sep 2018 14:46:30 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 984A328C10 for ; Thu, 27 Sep 2018 14:46:30 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8CA4A2B560; Thu, 27 Sep 2018 14:46:30 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3EE3028C10 for ; Thu, 27 Sep 2018 14:46:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727621AbeI0VFE (ORCPT ); Thu, 27 Sep 2018 17:05:04 -0400 Received: from mx07-00178001.pphosted.com ([62.209.51.94]:48166 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727541AbeI0VFD (ORCPT ); Thu, 27 Sep 2018 17:05:03 -0400 Received: from pps.filterd (m0046668.ppops.net [127.0.0.1]) by mx07-.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id w8REd0KU009398; Thu, 27 Sep 2018 16:46:17 +0200 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 2mnb6xugs0-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Thu, 27 Sep 2018 16:46:17 +0200 Received: from zeta.dmz-eu.st.com (zeta.dmz-eu.st.com [164.129.230.9]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 24EF134; Thu, 27 Sep 2018 14:46:16 +0000 (GMT) Received: from Webmail-eu.st.com (Safex1hubcas22.st.com [10.75.90.92]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id F0C2E4E0A; Thu, 27 Sep 2018 14:46:15 +0000 (GMT) Received: from SAFEX1HUBCAS23.st.com (10.75.90.46) by Safex1hubcas22.st.com (10.75.90.92) with Microsoft SMTP Server (TLS) id 14.3.361.1; Thu, 27 Sep 2018 16:46:15 +0200 Received: from localhost (10.201.23.73) by webmail-ga.st.com (10.75.90.48) with Microsoft SMTP Server (TLS) id 14.3.361.1; Thu, 27 Sep 2018 16:46:15 +0200 From: Hugues Fruchet To: Steve Longerbeam , Sakari Ailus , Hans Verkuil , "Mauro Carvalho Chehab" , Rob Herring , Mark Rutland , Maxime Ripard CC: , , , Hugues Fruchet , Benjamin Gaignard , Jacopo Mondi Subject: [PATCH 3/4] media: dt-bindings: media: Document pclk-max-frequency property Date: Thu, 27 Sep 2018 16:46:06 +0200 Message-ID: <1538059567-8381-4-git-send-email-hugues.fruchet@st.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1538059567-8381-1-git-send-email-hugues.fruchet@st.com> References: <1538059567-8381-1-git-send-email-hugues.fruchet@st.com> MIME-Version: 1.0 X-Originating-IP: [10.201.23.73] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-09-27_07:,, signatures=0 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This optional property aims to inform parallel video devices of the maximum pixel clock frequency admissible by host video interface. If bandwidth of data to be transferred requires a pixel clock which is higher than this value, parallel video device could then typically adapt framerate to reach this constraint. Signed-off-by: Hugues Fruchet --- Documentation/devicetree/bindings/media/video-interfaces.txt | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/media/video-interfaces.txt b/Documentation/devicetree/bindings/media/video-interfaces.txt index baf9d97..fa4c112 100644 --- a/Documentation/devicetree/bindings/media/video-interfaces.txt +++ b/Documentation/devicetree/bindings/media/video-interfaces.txt @@ -147,6 +147,8 @@ Optional endpoint properties as 0 (normal). This property is valid for serial busses only. - strobe: Whether the clock signal is used as clock (0) or strobe (1). Used with CCP2, for instance. +- pclk-max-frequency: maximum pixel clock frequency admissible by video + host interface. Example -------