From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from out20-73.mail.aliyun.com ([115.124.20.73]:50790 "EHLO out20-73.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726203AbeJ3RGP (ORCPT ); Tue, 30 Oct 2018 13:06:15 -0400 From: Yong Deng To: Maxime Ripard Cc: Mauro Carvalho Chehab , Rob Herring , Mark Rutland , Chen-Yu Tsai , Greg Kroah-Hartman , "David S. Miller" , Andrew Morton , Arnd Bergmann , Hans Verkuil , Laurent Pinchart , Geert Uytterhoeven , Neil Armstrong , Philipp Zabel , Jacopo Mondi , Thomas Gleixner , Todor Tomov , linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com, Sakari Ailus , Yong Deng Subject: [PATCH v12 1/2] dt-bindings: media: Add Allwinner V3s Camera Sensor Interface (CSI) Date: Tue, 30 Oct 2018 16:12:23 +0800 Message-Id: <1540887143-27904-1-git-send-email-yong.deng@magewell.com> Sender: linux-media-owner@vger.kernel.org List-ID: Add binding documentation for Allwinner V3s CSI. Acked-by: Maxime Ripard Acked-by: Sakari Ailus Reviewed-by: Rob Herring Signed-off-by: Yong Deng --- .../devicetree/bindings/media/sun6i-csi.txt | 56 ++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/sun6i-csi.txt diff --git a/Documentation/devicetree/bindings/media/sun6i-csi.txt b/Documentation/devicetree/bindings/media/sun6i-csi.txt new file mode 100644 index 000000000000..443e18c181b3 --- /dev/null +++ b/Documentation/devicetree/bindings/media/sun6i-csi.txt @@ -0,0 +1,56 @@ +Allwinner V3s Camera Sensor Interface +------------------------------------- + +Allwinner V3s SoC features a CSI module(CSI1) with parallel interface. + +Required properties: + - compatible: value must be "allwinner,sun8i-v3s-csi" + - reg: base address and size of the memory-mapped region. + - interrupts: interrupt associated to this IP + - clocks: phandles to the clocks feeding the CSI + * bus: the CSI interface clock + * mod: the CSI module clock + * ram: the CSI DRAM clock + - clock-names: the clock names mentioned above + - resets: phandles to the reset line driving the CSI + +The CSI node should contain one 'port' child node with one child 'endpoint' +node, according to the bindings defined in +Documentation/devicetree/bindings/media/video-interfaces.txt. + +Endpoint node properties for CSI +--------------------------------- +See the video-interfaces.txt for a detailed description of these properties. +- remote-endpoint : (required) a phandle to the bus receiver's endpoint + node +- bus-width: : (required) must be 8, 10, 12 or 16 +- pclk-sample : (optional) (default: sample on falling edge) +- hsync-active : (required; parallel-only) +- vsync-active : (required; parallel-only) + +Example: + +csi1: csi@1cb4000 { + compatible = "allwinner,sun8i-v3s-csi"; + reg = <0x01cb4000 0x1000>; + interrupts = ; + clocks = <&ccu CLK_BUS_CSI>, + <&ccu CLK_CSI1_SCLK>, + <&ccu CLK_DRAM_CSI>; + clock-names = "bus", "mod", "ram"; + resets = <&ccu RST_BUS_CSI>; + + port { + /* Parallel bus endpoint */ + csi1_ep: endpoint { + remote-endpoint = <&adv7611_ep>; + bus-width = <16>; + + /* If hsync-active/vsync-active are missing, + embedded BT.656 sync is used */ + hsync-active = <0>; /* Active low */ + vsync-active = <0>; /* Active low */ + pclk-sample = <1>; /* Rising */ + }; + }; +}; -- 1.8.3.1