From patchwork Wed Mar 29 13:25:19 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hugues FRUCHET X-Patchwork-Id: 9651573 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 2803D601D7 for ; Wed, 29 Mar 2017 13:35:47 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1931528421 for ; Wed, 29 Mar 2017 13:35:47 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0D6C22849C; Wed, 29 Mar 2017 13:35:47 +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=-1.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 9389428421 for ; Wed, 29 Mar 2017 13:35:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=wdRDHnZlgDCQ0CpDa1g3QdJkfEwqLczZmr/1p6nE63I=; b=st2mqVzVIMt467 WQz1jTscTC+naZA2uqRl5mQUJ2zm3eRtvX5K+rqMLwgF8wXeuoTMxvr9OtWq4SDkv1C2HkTYiQ+q3 PikYD27oozYzXv+XQ2wu32R5y1VC3iLzi1lR9KCzvz9VvaxMSKcJd1vLRjEohmbuNs96ZqzAN5DQc azCJiXzts9zpPrfPlGLIx5Auav4ySxlbvhQ+0fguYKR8Vfk2+k/5qAwlx40gzgXdQPyJ2cs5qJPNv wp4iuKK6ybHg0lLbX+u15h3drfmq/dBo9gWmyH5oMW0df94luJ5NS32Pz6ZdwVqkE/nQLQ2yGEc9R sIPxteOidEZ4ahYkUCnw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1ctDlI-00041l-Nx; Wed, 29 Mar 2017 13:35:44 +0000 Received: from mx08-00178001.pphosted.com ([91.207.212.93] helo=mx07-00178001.pphosted.com) by bombadil.infradead.org with esmtps (Exim 4.87 #1 (Red Hat Linux)) id 1ctDc8-00083H-Rr for linux-arm-kernel@lists.infradead.org; Wed, 29 Mar 2017 13:26:19 +0000 Received: from pps.filterd (m0046661.ppops.net [127.0.0.1]) by mx08-00178001.pphosted.com (8.16.0.11/8.16.0.11) with SMTP id v2TDPdd8015129; Wed, 29 Mar 2017 15:25:46 +0200 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx08-.pphosted.com with ESMTP id 29dgafg6x9-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Wed, 29 Mar 2017 15:25:46 +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 CBB6A38; Wed, 29 Mar 2017 13:25:45 +0000 (GMT) Received: from Webmail-eu.st.com (Safex1hubcas23.st.com [10.75.90.46]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id A3CD929D0; Wed, 29 Mar 2017 13:25:45 +0000 (GMT) Received: from localhost (10.201.23.73) by webmail-ga.st.com (10.75.90.48) with Microsoft SMTP Server (TLS) id 14.3.319.2; Wed, 29 Mar 2017 15:25:45 +0200 From: Hugues Fruchet To: Rob Herring , Mark Rutland , Maxime Coquelin , Alexandre Torgue , Mauro Carvalho Chehab , Hans Verkuil Subject: [PATCH v1 1/8] dt-bindings: Document STM32 DCMI bindings Date: Wed, 29 Mar 2017 15:25:19 +0200 Message-ID: <1490793926-6477-2-git-send-email-hugues.fruchet@st.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1490793926-6477-1-git-send-email-hugues.fruchet@st.com> References: <1490793926-6477-1-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=2.50.10432:, , definitions=2017-03-29_09:, , signatures=0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170329_062617_207403_D7E31D30 X-CRM114-Status: GOOD ( 11.89 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Yannick Fertre , Benjamin Gaignard , Hugues Fruchet , linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP This adds documentation of device tree bindings for the STM32 DCMI (Digital Camera Memory Interface). Signed-off-by: Hugues Fruchet --- .../devicetree/bindings/media/st,stm32-dcmi.txt | 77 ++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/st,stm32-dcmi.txt diff --git a/Documentation/devicetree/bindings/media/st,stm32-dcmi.txt b/Documentation/devicetree/bindings/media/st,stm32-dcmi.txt new file mode 100644 index 0000000..f0dc709 --- /dev/null +++ b/Documentation/devicetree/bindings/media/st,stm32-dcmi.txt @@ -0,0 +1,77 @@ +STMicroelectronics STM32 Digital Camera Memory Interface (DCMI) + +Required properties: +- compatible: "st,stm32-dcmi" +- reg: physical base address and length of the registers set for the device; +- interrupts: should contain IRQ line for the DCMI; +- clocks: list of clock specifiers, corresponding to entries in + the clock-names property; +- clock-names: must contain "mclk", which is the DCMI peripherial clock. +- resets: Reference to a reset controller +- reset-names: see Documentation/devicetree/bindings/reset/st,stm32-rcc.txt + +DCMI supports a single port node with parallel bus. It should contain one +'port' child node with child 'endpoint' node. Please refer to the bindings +defined in Documentation/devicetree/bindings/media/video-interfaces.txt. + +Example: + +Device node example +------------------- + dcmi: dcmi@50050000 { + compatible = "st,stm32-dcmi"; + reg = <0x50050000 0x400>; + interrupts = <78>; + resets = <&rcc STM32F4_AHB2_RESET(DCMI)>; + clocks = <&rcc 0 STM32F4_AHB2_CLOCK(DCMI)>; + clock-names = "mclk"; + pinctrl-names = "default"; + pinctrl-0 = <&dcmi_pins>; + dmas = <&dma2 1 1 0x414 0x3>; + dma-names = "tx"; + status = "disabled"; + }; + +Board setup example +------------------- + +&dcmi { + status = "okay"; + + port { + dcmi_0: endpoint@0 { + remote-endpoint = <&ov2640_0>; + bus-width = <8>; + hsync-active = <0>; + vsync-active = <0>; + pclk-sample = <1>; + }; + }; +}; + +{ + [...] + i2c@0 { + ov2640: camera@30 { + compatible = "ovti,ov2640"; + reg = <0x30>; + resetb-gpios = <&stmpegpio 2 GPIO_ACTIVE_HIGH>; + pwdn-gpios = <&stmpegpio 0 GPIO_ACTIVE_LOW>; + clocks = <&clk_ext_camera>; + clock-names = "xvclk"; + status = "okay"; + + port { + ov2640_0: endpoint { + remote-endpoint = <&dcmi_0>; + }; + }; + }; + }; + + clk_ext_camera: clk-ext-camera { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <24000000>; + }; +}