Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1033038AbdDTQJd (ORCPT ); Thu, 20 Apr 2017 12:09:33 -0400 Received: from mx07-00178001.pphosted.com ([62.209.51.94]:26454 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S971014AbdDTQIU (ORCPT ); Thu, 20 Apr 2017 12:08:20 -0400 From: Hugues Fruchet To: Rob Herring , Mark Rutland , Maxime Coquelin , Alexandre Torgue , Mauro Carvalho Chehab , Hans Verkuil CC: , , , , Benjamin Gaignard , Yannick Fertre , Hugues Fruchet Subject: [PATCH v4 1/8] dt-bindings: Document STM32 DCMI bindings Date: Thu, 20 Apr 2017 18:07:18 +0200 Message-ID: <1492704445-22186-2-git-send-email-hugues.fruchet@st.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1492704445-22186-1-git-send-email-hugues.fruchet@st.com> References: <1492704445-22186-1-git-send-email-hugues.fruchet@st.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.201.23.73] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-04-20_15:,, signatures=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2352 Lines: 64 This adds documentation of device tree bindings for the STM32 DCMI (Digital Camera Memory Interface). Acked-by: Rob Herring Signed-off-by: Hugues Fruchet --- .../devicetree/bindings/media/st,stm32-dcmi.txt | 46 ++++++++++++++++++++++ 1 file changed, 46 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..f8baf65 --- /dev/null +++ b/Documentation/devicetree/bindings/media/st,stm32-dcmi.txt @@ -0,0 +1,46 @@ +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 +- resets: reference to a reset controller, + see Documentation/devicetree/bindings/reset/st,stm32-rcc.txt +- clocks: list of clock specifiers, corresponding to entries in + the clock-names property +- clock-names: must contain "mclk", which is the DCMI peripherial clock +- pinctrl: the pincontrol settings to configure muxing properly + for pins that connect to DCMI device. + See Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.txt. +- dmas: phandle to DMA controller node, + see Documentation/devicetree/bindings/dma/stm32-dma.txt +- dma-names: must contain "tx", which is the transmit channel from DCMI to DMA + +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: + + 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"; + port { + dcmi_0: endpoint { + remote-endpoint = <...>; + bus-width = <8>; + hsync-active = <0>; + vsync-active = <0>; + pclk-sample = <1>; + }; + }; + }; + -- 1.9.1