linux-kernel - [PATCH v7 02/34] [media] dt-bindings: Add bindings for i.MX media driver

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Message-Id: <1495672189-29164-3-git-send-email-steve_longerbeam@mentor.com>
Date:   Wed, 24 May 2017 17:29:17 -0700
From:   Steve Longerbeam <slongerbeam@...il.com>
To:     robh+dt@...nel.org, mark.rutland@....com, shawnguo@...nel.org,
        kernel@...gutronix.de, fabio.estevam@....com,
        linux@...linux.org.uk, mchehab@...nel.org, hverkuil@...all.nl,
        nick@...anahar.org, markus.heiser@...marIT.de,
        p.zabel@...gutronix.de, laurent.pinchart+renesas@...asonboard.com,
        bparrot@...com, geert@...ux-m68k.org, arnd@...db.de,
        sudipm.mukherjee@...il.com, minghsiu.tsai@...iatek.com,
        tiffany.lin@...iatek.com, jean-christophe.trotin@...com,
        horms+renesas@...ge.net.au, niklas.soderlund+renesas@...natech.se,
        robert.jarzmik@...e.fr, songjun.wu@...rochip.com,
        andrew-ct.chen@...iatek.com, gregkh@...uxfoundation.org,
        shuah@...nel.org, sakari.ailus@...ux.intel.com, pavel@....cz
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-media@...r.kernel.org,
        devel@...verdev.osuosl.org,
        Steve Longerbeam <steve_longerbeam@...tor.com>
Subject: [PATCH v7 02/34] [media] dt-bindings: Add bindings for i.MX media driver

Add bindings documentation for the i.MX media driver.

Signed-off-by: Steve Longerbeam <steve_longerbeam@...tor.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";
+- 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