From mboxrd@z Thu Jan 1 00:00:00 1970 From: Josh Wu Subject: [v3][PATCH 5/5] media: ov2640: dt: add the device tree binding document Date: Thu, 11 Dec 2014 15:35:39 +0800 Message-ID: <1418283339-16281-6-git-send-email-josh.wu@atmel.com> References: <1418283339-16281-1-git-send-email-josh.wu@atmel.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1418283339-16281-1-git-send-email-josh.wu@atmel.com> Sender: linux-media-owner@vger.kernel.org To: linux-media@vger.kernel.org, g.liakhovetski@gmx.de Cc: m.chehab@samsung.com, linux-arm-kernel@lists.infradead.org, laurent.pinchart@ideasonboard.com, s.nawrocki@samsung.com, festevam@gmail.com, Josh Wu , devicetree@vger.kernel.org List-Id: devicetree@vger.kernel.org Add the document for ov2640 dt. Cc: devicetree@vger.kernel.org Signed-off-by: Josh Wu --- v2 -> v3: 1. fix incorrect description. 2. Add assigned-clocks & assigned-clock-rates. 3. resetb pin should be ACTIVE_LOW. v1 -> v2: 1. change the compatible string to be consistent with verdor file. 2. change the clock and pins' name. 3. add missed pinctrl in example. .../devicetree/bindings/media/i2c/ov2640.txt | 53 ++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/i2c/ov2640.txt diff --git a/Documentation/devicetree/bindings/media/i2c/ov2640.txt b/Documentation/devicetree/bindings/media/i2c/ov2640.txt new file mode 100644 index 0000000..958e120 --- /dev/null +++ b/Documentation/devicetree/bindings/media/i2c/ov2640.txt @@ -0,0 +1,53 @@ +* Omnivision ov2640 CMOS sensor + +The Omnivision OV2640 sensor support multiple resolutions output, such as +CIF, SVGA, UXGA. It also can support YUV422/420, RGB565/555 or raw RGB +output format. + +Required Properties: +- compatible: Must be "ovti,ov2640" +- clocks: reference to the xvclk input clock. It can be an external fixed + clock or a programmable clock from SoC. +- clock-names: Must be "xvclk". +- assigned-clocks: reference to the above 'clocks' property. +- assigned-clock-rates: reference to the clock frequency of xvclk. Typical + value is 25Mhz (25000000). + This clock should only have single user. Specifying + Conflicting rate configuration in multiple consumer + nodes for a shared clock is forbidden. + +Optional Properties: +- resetb-gpios: reference to the GPIO connected to the resetb pin, if any. +- pwdn-gpios: reference to the GPIO connected to the pwdn pin, if any. + +The device node must contain one 'port' child node for its digital output +video port, in accordance with the video interface bindings defined in +Documentation/devicetree/bindings/media/video-interfaces.txt. + +Example: + + i2c1: i2c@f0018000 { + ov2640: camera@0x30 { + compatible = "ovti,ov2640"; + reg = <0x30>; + + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_pck1 &pinctrl_ov2640_pwdn &pinctrl_ov2640_resetb>; + + resetb-gpios = <&pioE 24 GPIO_ACTIVE_LOW>; + pwdn-gpios = <&pioE 29 GPIO_ACTIVE_HIGH>; + + clocks = <&pck1>; + clock-names = "xvclk"; + + assigned-clocks = <&pck1>; + assigned-clock-rates = <25000000>; + + port { + ov2640_0: endpoint { + remote-endpoint = <&isi_0>; + bus-width = <8>; + }; + }; + }; + }; -- 1.9.1