From patchwork Wed Nov 4 17:32:10 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hugues FRUCHET X-Patchwork-Id: 11881741 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BE5BB139F for ; Wed, 4 Nov 2020 17:32:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 958132080D for ; Wed, 4 Nov 2020 17:32:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=st.com header.i=@st.com header.b="UypEoQRO" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731180AbgKDRcm (ORCPT ); Wed, 4 Nov 2020 12:32:42 -0500 Received: from mx08-00178001.pphosted.com ([91.207.212.93]:9672 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726950AbgKDRcl (ORCPT ); Wed, 4 Nov 2020 12:32:41 -0500 Received: from pps.filterd (m0046660.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 0A4HHFWl032201; Wed, 4 Nov 2020 18:32:28 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=st.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=STMicroelectronics; bh=qYfPxMthkznc92y4PPwL9Vj3JHriBF17CldNWKVusdQ=; b=UypEoQROkbPFehrf3Y6uitAKpcTaEtMbBt8UjmE8yquPFSXL5zxRgSZz1SRQ8vwUaEbP q6v7KUAg64Kf9I+54x/S4UYoo82ylECg0+st0BFeLGLBYfPROogN4Zv6qwruPvrQCg+m 7zFTrFZqO5F7H4YKfGWwCctNv3kuaAdzhydvFCiFPM9OKb9vg0X5jgHruxL0DRwVLOUy EYzqwOGBcSJMdRASVsilfba1pixmDlU1U8njn0viLGx1DeY/3b1he9BbafcZm9Xa+Pp/ N5t/iPizoGmKTJCcAMe1fx+9hybdUpgqg6FmIdzZYuAHIsnOHS8ZpAsSBzeKBAsKXmfE Lw== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 34h031ubqn-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 04 Nov 2020 18:32:28 +0100 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 704A910002A; Wed, 4 Nov 2020 18:32:27 +0100 (CET) Received: from Webmail-eu.st.com (sfhdag1node1.st.com [10.75.127.1]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 64583225C2A; Wed, 4 Nov 2020 18:32:27 +0100 (CET) Received: from localhost (10.75.127.44) by SFHDAG1NODE1.st.com (10.75.127.1) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Wed, 4 Nov 2020 18:32:26 +0100 From: Hugues Fruchet To: Alexandre Torgue , Mauro Carvalho Chehab , Hans Verkuil , Sakari Ailus , Rob Herring CC: , , , , , Hugues Fruchet , Alain Volmat , Yannick Fertre , Philippe CORNU Subject: [PATCH v5 2/4] media: dt-bindings: media: st,stm32-dcmi: add support of BT656 bus Date: Wed, 4 Nov 2020 18:32:10 +0100 Message-ID: <1604511132-4014-3-git-send-email-hugues.fruchet@st.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1604511132-4014-1-git-send-email-hugues.fruchet@st.com> References: <1604511132-4014-1-git-send-email-hugues.fruchet@st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.44] X-ClientProxiedBy: SFHDAG1NODE1.st.com (10.75.127.1) To SFHDAG1NODE1.st.com (10.75.127.1) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.312,18.0.737 definitions=2020-11-04_11:2020-11-04,2020-11-04 signatures=0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Add support of BT656 embedded synchronization bus mode in DCMI driver. Add "bus-type" property and make it required so that there is no ambiguity between parallel mode (bus-type=5) and BT656 mode (bus-type=6). BT656 mode allows to save hardware synchro lines hsync & vsync by replacing them with synchro codes embedded in data stream, hence hsync-active & vsync-active properties are useless in this mode. With DCMI, BT656 bus mode is only compatible with 8 bits width data bus. Signed-off-by: Hugues Fruchet Reviewed-by: Rob Herring --- .../devicetree/bindings/media/st,stm32-dcmi.yaml | 38 ++++++++++++++++++++++ 1 file changed, 38 insertions(+) diff --git a/Documentation/devicetree/bindings/media/st,stm32-dcmi.yaml b/Documentation/devicetree/bindings/media/st,stm32-dcmi.yaml index 3fe778c..c18574b 100644 --- a/Documentation/devicetree/bindings/media/st,stm32-dcmi.yaml +++ b/Documentation/devicetree/bindings/media/st,stm32-dcmi.yaml @@ -44,6 +44,43 @@ properties: bindings defined in Documentation/devicetree/bindings/media/video-interfaces.txt. + properties: + endpoint: + type: object + + properties: + bus-type: + enum: [5, 6] + default: 5 + + bus-width: + enum: [8, 10, 12, 14] + default: 8 + + remote-endpoint: true + + allOf: + - if: + properties: + bus-type: + const: 6 + + then: + properties: + hsync-active: false + vsync-active: false + bus-width: + enum: [8] + + required: + - remote-endpoint + - bus-type + - pclk-sample + + unevaluatedProperties: false + + additionalProperties: false + required: - compatible - reg @@ -75,6 +112,7 @@ examples: port { dcmi_0: endpoint { remote-endpoint = <&ov5640_0>; + bus-type = <5>; bus-width = <8>; hsync-active = <0>; vsync-active = <0>;