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Date: Tue, 28 Mar 2017 19:21:34 -0500 From: Rob Herring <robh+dt@...nel.org> To: Steve Longerbeam <slongerbeam@...il.com> Cc: Mark Rutland <mark.rutland@....com>, Shawn Guo <shawnguo@...nel.org>, "kernel@...gutronix.de" <kernel@...gutronix.de>, Fabio Estevam <fabio.estevam@....com>, Russell King <linux@...linux.org.uk>, Mauro Carvalho Chehab <mchehab@...nel.org>, Hans Verkuil <hverkuil@...all.nl>, Nick Dyer <nick@...anahar.org>, markus.heiser@...marit.de, Philipp Zabel <p.zabel@...gutronix.de>, Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>, Benoit Parrot <bparrot@...com>, Geert Uytterhoeven <geert@...ux-m68k.org>, Arnd Bergmann <arnd@...db.de>, Sudip Mukherjee <sudipm.mukherjee@...il.com>, Minghsiu Tsai <minghsiu.tsai@...iatek.com>, tiffany lin <tiffany.lin@...iatek.com>, Jean-Christophe Trotin <jean-christophe.trotin@...com>, Simon Horman <horms+renesas@...ge.net.au>, Niklas Söderlund <niklas.soderlund+renesas@...natech.se>, Robert Jarzmik <robert.jarzmik@...e.fr>, Songjun Wu <songjun.wu@...rochip.com>, Andrew-CT Chen (陳智迪) <andrew-ct.chen@...iatek.com>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, shuah@...nel.org, Sakari Ailus <sakari.ailus@...ux.intel.com>, Pavel Machek <pavel@....cz>, "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "linux-arm-kernel@...ts.infradead.org" <linux-arm-kernel@...ts.infradead.org>, "linux-media@...r.kernel.org" <linux-media@...r.kernel.org>, devel@...verdev.osuosl.org, Steve Longerbeam <steve_longerbeam@...tor.com> Subject: Re: [PATCH v6 02/39] [media] dt-bindings: Add bindings for i.MX media driver On Mon, Mar 27, 2017 at 7:40 PM, Steve Longerbeam <slongerbeam@...il.com> wrote: > 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"; As I mentioned in v5, there's a DW CSI2 binding in progress. This needs to be based on that. Rob
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