[v9,1/4] dt-bindings: media: i2c: Add bindings for Maxim Integrated MAX9286
Commit Message
From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Rob Herring <robh@kernel.org>
---
v7:
- Collect Rob's RB tag
- Remove redundant maxItems from remote-endpoints
- Fix SPDX licence tag
.../bindings/media/i2c/maxim,max9286.yaml | 287 ++++++++++++++++++
1 file changed, 287 insertions(+)
create mode 100644 Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml
Comments
On Tue, 12 May 2020 16:51:02 +0100, Kieran Bingham wrote:
> From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
>
> 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@ideasonboard.com>
> Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
> Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
> Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
> Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
> Reviewed-by: Rob Herring <robh@kernel.org>
>
> ---
>
> v7:
> - Collect Rob's RB tag
> - Remove redundant maxItems from remote-endpoints
> - Fix SPDX licence tag
>
> .../bindings/media/i2c/maxim,max9286.yaml | 287 ++++++++++++++++++
> 1 file changed, 287 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml
>
My bot found errors running 'make dt_binding_check' on your patch:
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml: properties: {'enum': ['$ref', 'additionalItems', 'additionalProperties', 'allOf', 'anyOf', 'const', 'contains', 'default', 'dependencies', 'deprecated', 'description', 'else', 'enum', 'if', 'items', 'maxItems', 'maximum', 'minItems', 'minimum', 'multipleOf', 'not', 'oneOf', 'pattern', 'patternProperties', 'properties', 'propertyNames', 'required', 'then', 'unevaluatedProperties']} is not allowed for 'additionalProperties'
Documentation/devicetree/bindings/Makefile:12: recipe for target 'Documentation/devicetree/bindings/media/i2c/maxim,max9286.example.dts' failed
make[1]: *** [Documentation/devicetree/bindings/media/i2c/maxim,max9286.example.dts] Error 1
make[1]: *** Waiting for unfinished jobs....
Makefile:1300: recipe for target 'dt_binding_check' failed
make: *** [dt_binding_check] Error 2
See https://patchwork.ozlabs.org/patch/1288573
If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure dt-schema is up to date:
pip3 install git+https://github.com/devicetree-org/dt-schema.git@master --upgrade
Please check and re-submit.
On Tue, May 12, 2020 at 04:51:02PM +0100, Kieran Bingham wrote:
> From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
>
> 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@ideasonboard.com>
> Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
> Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
> Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
> Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
> Reviewed-by: Rob Herring <robh@kernel.org>
>
> ---
>
> v7:
> - Collect Rob's RB tag
> - Remove redundant maxItems from remote-endpoints
> - Fix SPDX licence tag
>
> .../bindings/media/i2c/maxim,max9286.yaml | 287 ++++++++++++++++++
> 1 file changed, 287 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml
>
> diff --git a/Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml b/Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml
> new file mode 100644
> index 000000000000..f9d3e5712c59
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml
> @@ -0,0 +1,287 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +# Copyright (C) 2019 Renesas Electronics Corp.
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/media/i2c/maxim,max9286.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Maxim Integrated Quad GMSL Deserializer
> +
> +maintainers:
> + - Jacopo Mondi <jacopo+renesas@jmondi.org>
> + - Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
> + - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
> + - Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
> +
> +description: |
> + 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.
> +
> +properties:
> + '#address-cells':
> + const: 1
> +
> + '#size-cells':
> + const: 0
> +
> + compatible:
> + const: maxim,max9286
> +
> + reg:
> + description: I2C device address
> + maxItems: 1
> +
> + poc-supply:
> + description: Regulator providing Power over Coax to the cameras
> + maxItems: 1
> +
> + enable-gpios:
> + description: GPIO connected to the \#PWDN pin with inverted polarity
> + maxItems: 1
> +
> + ports:
> + type: object
> + description: |
> + 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
> +
> + properties:
> + '#address-cells':
> + const: 1
> +
> + '#size-cells':
> + const: 0
> +
> + port@[0-3]:
> + type: object
> + properties:
> + reg:
> + enum: [ 0, 1, 2, 3 ]
> +
> + endpoint:
> + type: object
> +
> + properties:
> + remote-endpoint:
> + description: |
> + phandle to the remote GMSL source endpoint subnode in the
> + remote node port.
> +
> + required:
> + - remote-endpoint
> +
> + required:
> + - reg
> + - endpoint
> +
> + additionalProperties: false
> +
> + port@4:
> + type: object
> + properties:
> + reg:
> + const: 4
> +
> + endpoint:
> + type: object
> +
> + properties:
> + remote-endpoint:
> + description: phandle to the remote CSI-2 sink endpoint.
> +
> + data-lanes:
> + description: array of physical CSI-2 data lane indexes.
> +
> + required:
> + - remote-endpoint
> + - data-lanes
> +
> + required:
> + - reg
> + - endpoint
> +
> + additionalProperties: false
> +
> + required:
> + - port@4
> +
> + i2c-mux:
> + type: object
> + description: |
> + 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.
> +
> + properties:
> + '#address-cells':
> + const: 1
> +
> + '#size-cells':
> + const: 0
> +
> + additionalProperties: false
Wrong indentation. Should be 2 more or this is a DT property.
> +
> +required:
> + - compatible
> + - reg
> + - ports
> + - i2c-mux
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/gpio/gpio.h>
> +
> + i2c@e66d8000 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + reg = <0 0xe66d8000 0 0x40>;
> +
> + gmsl-deserializer@2c {
> + compatible = "maxim,max9286";
> + reg = <0x2c>;
> + poc-supply = <&camera_poc_12v>;
> + enable-gpios = <&gpio 13 GPIO_ACTIVE_HIGH>;
> +
> + 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-mux {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + i2c@0 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + reg = <0>;
> +
> + camera@51 {
> + reg = <0x51>;
> +
> + port {
> + rdacm20_out0: endpoint {
> + remote-endpoint = <&max9286_in0>;
> + };
> + };
> +
> + };
> + };
> +
> + i2c@1 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <1>;
> +
> + camera@52 {
> + reg = <0x52>;
> +
> + port {
> + rdacm20_out1: endpoint {
> + remote-endpoint = <&max9286_in1>;
> + };
> + };
> + };
> + };
> +
> + i2c@2 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <2>;
> +
> + camera@53 {
> + reg = <0x53>;
> +
> + port {
> + rdacm20_out2: endpoint {
> + remote-endpoint = <&max9286_in2>;
> + };
> + };
> + };
> + };
> +
> + i2c@3 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <3>;
> +
> + camera@54 {
> + reg = <0x54>;
> +
> + port {
> + rdacm20_out3: endpoint {
> + remote-endpoint = <&max9286_in3>;
> + };
> + };
> + };
> + };
> + };
> + };
> + };
> --
> 2.25.1
>
Hi Rob,
On Tue, May 12, 2020 at 05:36:10PM -0500, Rob Herring wrote:
> On Tue, May 12, 2020 at 04:51:02PM +0100, Kieran Bingham wrote:
> > From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
> >
> > 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@ideasonboard.com>
> > Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
> > Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
> > Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
> > Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
> > Reviewed-by: Rob Herring <robh@kernel.org>
> >
> > ---
> >
> > v7:
> > - Collect Rob's RB tag
> > - Remove redundant maxItems from remote-endpoints
> > - Fix SPDX licence tag
> >
> > .../bindings/media/i2c/maxim,max9286.yaml | 287 ++++++++++++++++++
> > 1 file changed, 287 insertions(+)
> > create mode 100644 Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml b/Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml
> > new file mode 100644
> > index 000000000000..f9d3e5712c59
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml
> > @@ -0,0 +1,287 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +# Copyright (C) 2019 Renesas Electronics Corp.
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/media/i2c/maxim,max9286.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Maxim Integrated Quad GMSL Deserializer
> > +
> > +maintainers:
> > + - Jacopo Mondi <jacopo+renesas@jmondi.org>
> > + - Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
> > + - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
> > + - Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
> > +
> > +description: |
> > + 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.
> > +
> > +properties:
> > + '#address-cells':
> > + const: 1
> > +
> > + '#size-cells':
> > + const: 0
> > +
> > + compatible:
> > + const: maxim,max9286
> > +
> > + reg:
> > + description: I2C device address
> > + maxItems: 1
> > +
> > + poc-supply:
> > + description: Regulator providing Power over Coax to the cameras
> > + maxItems: 1
> > +
> > + enable-gpios:
> > + description: GPIO connected to the \#PWDN pin with inverted polarity
> > + maxItems: 1
> > +
> > + ports:
> > + type: object
> > + description: |
> > + 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
> > +
> > + properties:
> > + '#address-cells':
> > + const: 1
> > +
> > + '#size-cells':
> > + const: 0
> > +
> > + port@[0-3]:
> > + type: object
> > + properties:
> > + reg:
> > + enum: [ 0, 1, 2, 3 ]
> > +
> > + endpoint:
> > + type: object
> > +
> > + properties:
> > + remote-endpoint:
> > + description: |
> > + phandle to the remote GMSL source endpoint subnode in the
> > + remote node port.
> > +
> > + required:
> > + - remote-endpoint
> > +
> > + required:
> > + - reg
> > + - endpoint
> > +
> > + additionalProperties: false
> > +
> > + port@4:
> > + type: object
> > + properties:
> > + reg:
> > + const: 4
> > +
> > + endpoint:
> > + type: object
> > +
> > + properties:
> > + remote-endpoint:
> > + description: phandle to the remote CSI-2 sink endpoint.
> > +
> > + data-lanes:
> > + description: array of physical CSI-2 data lane indexes.
> > +
> > + required:
> > + - remote-endpoint
> > + - data-lanes
> > +
> > + required:
> > + - reg
> > + - endpoint
> > +
> > + additionalProperties: false
> > +
> > + required:
> > + - port@4
> > +
> > + i2c-mux:
> > + type: object
> > + description: |
> > + 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.
> > +
> > + properties:
> > + '#address-cells':
> > + const: 1
> > +
> > + '#size-cells':
> > + const: 0
> > +
> > + additionalProperties: false
>
> Wrong indentation. Should be 2 more or this is a DT property.
>
Thanks, updating the dt tools helped spotting the error locally as
well.
This fixes the error reported in the previous email, now I get a
Documentation/devicetree/bindings/media/i2c/maxim,max9286.example.dt.yaml:
gmsl-deserializer@2c: i2c-mux: 'i2c@0', 'i2c@1', 'i2c@2', 'i2c@3' do not match any of the regexes: 'pinctrl-[0-9]+'
which makes me think the i2c-mux child nodes are under-specified in
this bindings.
I have expanded them and will reply with a fixup to be applied on top
of this patch to ease review and eventually include in v10.
Thanks
j
> > +
> > +required:
> > + - compatible
> > + - reg
> > + - ports
> > + - i2c-mux
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > + - |
> > + #include <dt-bindings/gpio/gpio.h>
> > +
> > + i2c@e66d8000 {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > +
> > + reg = <0 0xe66d8000 0 0x40>;
> > +
> > + gmsl-deserializer@2c {
> > + compatible = "maxim,max9286";
> > + reg = <0x2c>;
> > + poc-supply = <&camera_poc_12v>;
> > + enable-gpios = <&gpio 13 GPIO_ACTIVE_HIGH>;
> > +
> > + 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-mux {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > +
> > + i2c@0 {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > +
> > + reg = <0>;
> > +
> > + camera@51 {
> > + reg = <0x51>;
> > +
> > + port {
> > + rdacm20_out0: endpoint {
> > + remote-endpoint = <&max9286_in0>;
> > + };
> > + };
> > +
> > + };
> > + };
> > +
> > + i2c@1 {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + reg = <1>;
> > +
> > + camera@52 {
> > + reg = <0x52>;
> > +
> > + port {
> > + rdacm20_out1: endpoint {
> > + remote-endpoint = <&max9286_in1>;
> > + };
> > + };
> > + };
> > + };
> > +
> > + i2c@2 {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + reg = <2>;
> > +
> > + camera@53 {
> > + reg = <0x53>;
> > +
> > + port {
> > + rdacm20_out2: endpoint {
> > + remote-endpoint = <&max9286_in2>;
> > + };
> > + };
> > + };
> > + };
> > +
> > + i2c@3 {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + reg = <3>;
> > +
> > + camera@54 {
> > + reg = <0x54>;
> > +
> > + port {
> > + rdacm20_out3: endpoint {
> > + remote-endpoint = <&max9286_in3>;
> > + };
> > + };
> > + };
> > + };
> > + };
> > + };
> > + };
> > --
> > 2.25.1
> >
new file mode 100644
@@ -0,0 +1,287 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2019 Renesas Electronics Corp.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/i2c/maxim,max9286.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Maxim Integrated Quad GMSL Deserializer
+
+maintainers:
+ - Jacopo Mondi <jacopo+renesas@jmondi.org>
+ - Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
+ - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
+ - Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
+
+description: |
+ 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.
+
+properties:
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+ compatible:
+ const: maxim,max9286
+
+ reg:
+ description: I2C device address
+ maxItems: 1
+
+ poc-supply:
+ description: Regulator providing Power over Coax to the cameras
+ maxItems: 1
+
+ enable-gpios:
+ description: GPIO connected to the \#PWDN pin with inverted polarity
+ maxItems: 1
+
+ ports:
+ type: object
+ description: |
+ 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
+
+ properties:
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+ port@[0-3]:
+ type: object
+ properties:
+ reg:
+ enum: [ 0, 1, 2, 3 ]
+
+ endpoint:
+ type: object
+
+ properties:
+ remote-endpoint:
+ description: |
+ phandle to the remote GMSL source endpoint subnode in the
+ remote node port.
+
+ required:
+ - remote-endpoint
+
+ required:
+ - reg
+ - endpoint
+
+ additionalProperties: false
+
+ port@4:
+ type: object
+ properties:
+ reg:
+ const: 4
+
+ endpoint:
+ type: object
+
+ properties:
+ remote-endpoint:
+ description: phandle to the remote CSI-2 sink endpoint.
+
+ data-lanes:
+ description: array of physical CSI-2 data lane indexes.
+
+ required:
+ - remote-endpoint
+ - data-lanes
+
+ required:
+ - reg
+ - endpoint
+
+ additionalProperties: false
+
+ required:
+ - port@4
+
+ i2c-mux:
+ type: object
+ description: |
+ 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.
+
+ properties:
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+ additionalProperties: false
+
+required:
+ - compatible
+ - reg
+ - ports
+ - i2c-mux
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+
+ i2c@e66d8000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ reg = <0 0xe66d8000 0 0x40>;
+
+ gmsl-deserializer@2c {
+ compatible = "maxim,max9286";
+ reg = <0x2c>;
+ poc-supply = <&camera_poc_12v>;
+ enable-gpios = <&gpio 13 GPIO_ACTIVE_HIGH>;
+
+ 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-mux {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ i2c@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ reg = <0>;
+
+ camera@51 {
+ reg = <0x51>;
+
+ port {
+ rdacm20_out0: endpoint {
+ remote-endpoint = <&max9286_in0>;
+ };
+ };
+
+ };
+ };
+
+ i2c@1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <1>;
+
+ camera@52 {
+ reg = <0x52>;
+
+ port {
+ rdacm20_out1: endpoint {
+ remote-endpoint = <&max9286_in1>;
+ };
+ };
+ };
+ };
+
+ i2c@2 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <2>;
+
+ camera@53 {
+ reg = <0x53>;
+
+ port {
+ rdacm20_out2: endpoint {
+ remote-endpoint = <&max9286_in2>;
+ };
+ };
+ };
+ };
+
+ i2c@3 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <3>;
+
+ camera@54 {
+ reg = <0x54>;
+
+ port {
+ rdacm20_out3: endpoint {
+ remote-endpoint = <&max9286_in3>;
+ };
+ };
+ };
+ };
+ };
+ };
+ };