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Date: Tue, 6 Mar 2018 10:13:45 +0800 From: Yong Deng <yong.deng@...ewell.com> To: Maxime Ripard <maxime.ripard@...e-electrons.com> Cc: Mauro Carvalho Chehab <mchehab@...nel.org>, Rob Herring <robh+dt@...nel.org>, Mark Rutland <mark.rutland@....com>, Chen-Yu Tsai <wens@...e.org>, "David S. Miller" <davem@...emloft.net>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Linus Walleij <linus.walleij@...aro.org>, Randy Dunlap <rdunlap@...radead.org>, Hans Verkuil <hans.verkuil@...co.com>, Stanimir Varbanov <stanimir.varbanov@...aro.org>, Benjamin Gaignard <benjamin.gaignard@...aro.org>, Arnd Bergmann <arnd@...db.de>, Philipp Zabel <p.zabel@...gutronix.de>, Ramesh Shanmugasundaram <ramesh.shanmugasundaram@...renesas.com>, Yannick Fertre <yannick.fertre@...com>, Sakari Ailus <sakari.ailus@...ux.intel.com>, Todor Tomov <todor.tomov@...aro.org>, linux-media@...r.kernel.org, devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, linux-sunxi@...glegroups.com, Yong Deng <yong.deng@...ewell.com> Subject: [PATCH v9 1/2] dt-bindings: media: Add Allwinner V3s Camera Sensor Interface (CSI) Add binding documentation for Allwinner V3s CSI. Acked-by: Maxime Ripard <maxime.ripard@...tlin.com> Acked-by: Sakari Ailus <sakari.ailus@...ux.intel.com> Reviewed-by: Rob Herring <robh@...nel.org> Signed-off-by: Yong Deng <yong.deng@...ewell.com> --- .../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 000000000000..2ff47a9507a6 --- /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@...4000 { + compatible = "allwinner,sun8i-v3s-csi"; + reg = <0x01cb4000 0x1000>; + interrupts = <GIC_SPI 84 IRQ_TYPE_LEVEL_HIGH>; + 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
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