From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yong Deng Subject: [PATCH v6 1/2] dt-bindings: media: Add Allwinner V3s Camera Sensor Interface (CSI) Date: Tue, 23 Jan 2018 16:16:17 +0800 Message-ID: <1516695377-23262-1-git-send-email-yong.deng@magewell.com> Return-path: Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Maxime Ripard Cc: Mauro Carvalho Chehab , Rob Herring , Mark Rutland , Chen-Yu Tsai , "David S. Miller" , Greg Kroah-Hartman , Hans Verkuil , Linus Walleij , Randy Dunlap , Stanimir Varbanov , Hugues Fruchet , Yannick Fertre , Philipp Zabel , Arnd Bergmann , Benjamin Gaignard , Ramesh Shanmugasundaram , Sakari Ailus , Rick Chang List-Id: devicetree@vger.kernel.org Add binding documentation for Allwinner V3s CSI. Reviewed-by: Rob Herring Signed-off-by: Yong Deng --- .../devicetree/bindings/media/sun6i-csi.txt | 59 ++++++++++++++++++++++ 1 file changed, 59 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 0000000..2ff47a9 --- /dev/null +++ b/Documentation/devicetree/bindings/media/sun6i-csi.txt @@ -0,0 +1,59 @@ +Allwinner V3s Camera Sensor Interface +------------------------------------- + +Allwinner V3s SoC features two CSI module. CSI0 is used for MIPI CSI-2 +interface and CSI1 is used for 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 + +Each 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. As mentioned +above, the endpoint's bus type should be MIPI CSI-2 for CSI0 and parallel or +Bt656 for CSI1. + +Endpoint node properties for CSI1 +--------------------------------- + +- 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 : (only required for parallel) +- vsync-active : (only required for parallel) + +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 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html