Hi Niklas, I have posted 4 versions of this already, so this should be v5. Have you considered the review comments from Rob Herring [0] What version did you take to start this process? Is this an arbitrary new version? Something you had lying around? Or did you get the latest version from my branches? If so - what changes have you made against that version ? [0] https://lore.kernel.org/lkml/20181105200238.GA12435@bogus/ -- Kieran On 09/08/2019 05:05, Niklas Söderlund wrote: > From: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx> > > The MAX9286 deserializes video data received on up to 4 Gigabit > Multimedia Serial Links (GMSL) and outputs them on a CSI-2 port using up > to 4 data lanes. > > Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx> > Signed-off-by: Jacopo Mondi <jacopo+renesas@xxxxxxxxxx> > Signed-off-by: Kieran Bingham <kieran.bingham+renesas@xxxxxxxxxxxxxxxx> > Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx> > Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx> > --- > .../bindings/media/i2c/maxim,max9286.txt | 182 ++++++++++++++++++ > 1 file changed, 182 insertions(+) > create mode 100644 Documentation/devicetree/bindings/media/i2c/maxim,max9286.txt > > diff --git a/Documentation/devicetree/bindings/media/i2c/maxim,max9286.txt b/Documentation/devicetree/bindings/media/i2c/maxim,max9286.txt > new file mode 100644 > index 0000000000000000..afff77a55bb70744 > --- /dev/null > +++ b/Documentation/devicetree/bindings/media/i2c/maxim,max9286.txt > @@ -0,0 +1,182 @@ > +Maxim Integrated Quad GMSL Deserializer > +--------------------------------------- > + > +The MAX9286 deserializer receives video data on up to 4 Gigabit Multimedia > +Serial Links (GMSL) and outputs them on a CSI-2 D-PHY port using up to 4 data > +lanes. > + > +In addition to video data, the GMSL links carry a bidirectional control channel > +that encapsulates I2C messages. The MAX9286 forwards all I2C traffic not > +addressed to itself to the other side of the links, where a GMSL serializer > +will output it on a local I2C bus. In the other direction all I2C traffic > +received over GMSL by the MAX9286 is output on the local I2C bus. > + > +Required Properties: > + > +- compatible: Shall be "maxim,max9286" > +- reg: I2C device address > + > +Optional Properties: > + > +- poc-supply: Regulator providing Power over Coax to the cameras > +- enable-gpios: GPIO connected to the #PWDN pin with inverted polarity > + > +Required endpoint nodes: > +----------------------- > + > +The connections to the MAX9286 GMSL and its endpoint nodes are modelled using > +the OF graph bindings in accordance with the video interface bindings defined > +in Documentation/devicetree/bindings/media/video-interfaces.txt. > + > +The following table lists the port number corresponding to each device port. > + > + Port Description > + ---------------------------------------- > + Port 0 GMSL Input 0 > + Port 1 GMSL Input 1 > + Port 2 GMSL Input 2 > + Port 3 GMSL Input 3 > + Port 4 CSI-2 Output > + > +Optional Endpoint Properties for GMSL Input Ports (Port [0-3]): > + > +- remote-endpoint: phandle to the remote GMSL source endpoint subnode in the > + remote node port. > + > +Required Endpoint Properties for CSI-2 Output Port (Port 4): > + > +- remote-endpoint: phandle to the remote CSI-2 sink endpoint node. > +- data-lanes: array of physical CSI-2 data lane indexes. > + > +Required i2c-mux nodes: > +---------------------- > + > +Each GMSL link is modelled as a child bus of an i2c bus multiplexer/switch, in > +accordance with bindings described in > +Documentation/devicetree/bindings/i2c/i2c-mux.txt. The serializer device on the > +remote end of the GMSL link shall be modelled as a child node of the > +corresponding I2C bus. > + > +Required i2c child bus properties: > +- all properties described as required i2c child bus nodes properties in > + Documentation/devicetree/bindings/i2c/i2c-mux.txt. > + > +Example: > +------- > + > + gmsl-deserializer@2c { > + compatible = "maxim,max9286"; > + reg = <0x2c>; > + poc-supply = <&camera_poc_12v>; > + enable-gpios = <&gpio 13 GPIO_ACTIVE_HIGH>; > + > + #address-cells = <1>; > + #size-cells = <0>; > + > + ports { > + #address-cells = <1>; > + #size-cells = <0>; > + > + port@0 { > + reg = <0>; > + max9286_in0: endpoint { > + remote-endpoint = <&rdacm20_out0>; > + }; > + }; > + > + port@1 { > + reg = <1>; > + max9286_in1: endpoint { > + remote-endpoint = <&rdacm20_out1>; > + }; > + }; > + > + port@2 { > + reg = <2>; > + max9286_in2: endpoint { > + remote-endpoint = <&rdacm20_out2>; > + }; > + }; > + > + port@3 { > + reg = <3>; > + max9286_in3: endpoint { > + remote-endpoint = <&rdacm20_out3>; > + }; > + }; > + > + port@4 { > + reg = <4>; > + max9286_out: endpoint { > + data-lanes = <1 2 3 4>; > + remote-endpoint = <&csi40_in>; > + }; > + }; > + }; > + > + i2c@0 { > + #address-cells = <1>; > + #size-cells = <0>; > + reg = <0>; > + > + camera@51 { > + compatible = "imi,rdacm20"; > + reg = <0x51 0x61>; > + > + port { > + rdacm20_out0: endpoint { > + remote-endpoint = <&max9286_in0>; > + }; > + }; > + > + }; > + }; > + > + i2c@1 { > + #address-cells = <1>; > + #size-cells = <0>; > + reg = <1>; > + > + camera@52 { > + compatible = "imi,rdacm20"; > + reg = <0x52 0x62>; > + port { > + rdacm20_out1: endpoint { > + remote-endpoint = <&max9286_in1>; > + }; > + }; > + }; > + }; > + > + i2c@2 { > + #address-cells = <1>; > + #size-cells = <0>; > + reg = <2>; > + > + camera@53 { > + compatible = "imi,rdacm20"; > + reg = <0x53 0x63>; > + port { > + rdacm20_out2: endpoint { > + remote-endpoint = <&max9286_in2>; > + }; > + }; > + }; > + }; > + > + i2c@3 { > + #address-cells = <1>; > + #size-cells = <0>; > + reg = <3>; > + > + camera@54 { > + compatible = "imi,rdacm20"; > + reg = <0x54 0x64>; > + port { > + rdacm20_out3: endpoint { > + remote-endpoint = <&max9286_in3>; > + }; > + }; > + }; > + }; > + }; >
