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SubjectRe: [PATCH v5 02/39] [media] dt-bindings: Add bindings for i.MX media driver
+Ramiro

On Thu, Mar 09, 2017 at 08:52:42PM -0800, Steve Longerbeam wrote:
> Add bindings documentation for the i.MX media driver.
>
> Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>
> ---
> Documentation/devicetree/bindings/media/imx.txt | 74 +++++++++++++++++++++++++
> 1 file changed, 74 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/media/imx.txt
>
> diff --git a/Documentation/devicetree/bindings/media/imx.txt b/Documentation/devicetree/bindings/media/imx.txt
> new file mode 100644
> index 0000000..3059c06
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/imx.txt
> @@ -0,0 +1,74 @@
> +Freescale i.MX Media Video Device
> +=================================
> +
> +Video Media Controller node
> +---------------------------
> +
> +This is the media controller node for video capture support. It is a
> +virtual device that lists the camera serial interface nodes that the
> +media device will control.
> +
> +Required properties:
> +- compatible : "fsl,imx-capture-subsystem";
> +- ports : Should contain a list of phandles pointing to camera
> + sensor interface ports of IPU devices
> +
> +example:
> +
> +capture-subsystem {
> + compatible = "fsl,imx-capture-subsystem";
> + ports = <&ipu1_csi0>, <&ipu1_csi1>;
> +};
> +
> +fim child node
> +--------------
> +
> +This is an optional child node of the ipu_csi port nodes. If present and
> +available, it enables the Frame Interval Monitor. Its properties can be
> +used to modify the method in which the FIM measures frame intervals.
> +Refer to Documentation/media/v4l-drivers/imx.rst for more info on the
> +Frame Interval Monitor.
> +
> +Optional properties:
> +- fsl,input-capture-channel: an input capture channel and channel flags,
> + specified as <chan flags>. The channel number
> + must be 0 or 1. The flags can be
> + IRQ_TYPE_EDGE_RISING, IRQ_TYPE_EDGE_FALLING, or
> + IRQ_TYPE_EDGE_BOTH, and specify which input
> + capture signal edge will trigger the input
> + capture event. If an input capture channel is
> + specified, the FIM will use this method to
> + measure frame intervals instead of via the EOF
> + interrupt. The input capture method is much
> + preferred over EOF as it is not subject to
> + interrupt latency errors. However it requires
> + routing the VSYNC or FIELD output signals of
> + the camera sensor to one of the i.MX input
> + capture pads (SD1_DAT0, SD1_DAT1), which also
> + gives up support for SD1.
> +
> +
> +mipi_csi2 node
> +--------------
> +
> +This is the device node for the MIPI CSI-2 Receiver, required for MIPI
> +CSI-2 sensors.
> +
> +Required properties:
> +- compatible : "fsl,imx6-mipi-csi2", "snps,dw-mipi-csi2";

Ramiro is also working on a binding for DW MIPI CSI2 block[1]. We need 1
binding for that.

> +- reg : physical base address and length of the register set;
> +- clocks : the MIPI CSI-2 receiver requires three clocks: hsi_tx
> + (the D-PHY clock), video_27m (D-PHY PLL reference
> + clock), and eim_podf;
> +- clock-names : must contain "dphy", "ref", "pix";
> +- port@* : five port nodes must exist, containing endpoints
> + connecting to the source and sink devices according to
> + of_graph bindings. The first port is an input port,
> + connecting with a MIPI CSI-2 source, and ports 1
> + through 4 are output ports connecting with parallel
> + bus sink endpoint nodes and correspond to the four
> + MIPI CSI-2 virtual channel outputs.
> +
> +Optional properties:
> +- interrupts : must contain two level-triggered interrupts,
> + in order: 100 and 101;
> --
> 2.7.4
>

[1] https://lkml.org/lkml/2017/3/7/395

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