| Message ID | 20240313094922.311743-3-julien.massot@collabora.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add support for MAX96714/F and MAX96717/F GMSL2 ser/des | expand |
On Wed, Mar 13, 2024 at 10:49:20AM +0100, Julien Massot wrote: > Add DT bindings for Maxim MAX96714 GMSL2 Deserializer. > > Signed-off-by: Julien Massot <julien.massot@collabora.com> > --- > Change since v4: > - Add compatible for MAX96714 and use it as a fallback for MAX96714F > - Remove extra '|' for decriptions > - Reference 'i2c-gate' instead of 'i2c-controller' > > Change since v3: > - Renamed file to maxim,max96714.yaml dropped the 'f' suffix > - Removed mention to C-PHY since it's not supported by MAX96714 deserializers > - Removed bus-type requirement on CSI endpoint since the device only support D-PHY > - Removed the clock-lanes property in the dt example > > Change since v2: > - remove reg description > - rename enable gpio to powerdown > - use generic node name: i2c, serializer, deserializer > --- > .../bindings/media/i2c/maxim,max96714.yaml | 176 ++++++++++++++++++ > 1 file changed, 176 insertions(+) > create mode 100644 Documentation/devicetree/bindings/media/i2c/maxim,max96714.yaml > > diff --git a/Documentation/devicetree/bindings/media/i2c/maxim,max96714.yaml b/Documentation/devicetree/bindings/media/i2c/maxim,max96714.yaml > new file mode 100644 > index 000000000000..59b116092834 > --- /dev/null > +++ b/Documentation/devicetree/bindings/media/i2c/maxim,max96714.yaml > @@ -0,0 +1,176 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +# Copyright (C) 2024 Collabora Ltd. > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/media/i2c/maxim,max96714.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Maxim MAX96714 GMSL2 to CSI-2 Deserializer > + > +maintainers: > + - Julien Massot <julien.massot@collabora.com> > + > +description: > + The MAX96714 deserializer converts GMSL2 serial inputs into MIPI > + CSI-2 D-PHY formatted output. The device allows the GMSL2 link to > + simultaneously transmit bidirectional control-channel data while forward > + video transmissions are in progress. The MAX96714 can connect to one > + remotely located serializer using industry-standard coax or STP > + interconnects. The device cans operate in pixel or tunnel mode. In pixel mode > + the MAX96714 can select individual video stream, while the tunnel mode forward all > + the MIPI data received by the serializer. > + > + The GMSL2 serial link operates at a fixed rate of 3Gbps or 6Gbps in the > + forward direction and 187.5Mbps in the reverse direction. > + MAX96714F only supports a fixed rate of 3Gbps in the forward direction. > + > +properties: > + compatible: > + oneOf: > + - enum: > + - maxim,max96714 There's only once device here, make it const rather than enum. > + - items: > + - enum: > + - maxim,max96714f > + - const: maxim,max96714 # fallback for 'f' variant Drop the comment btw, it doesn't make sense given you have an enum that will allow for more devices and it being a fallback is obvious. That said, given what you told me on the last version | Yes there are a few differences visible to the software, for example the | GMSL | link rate since MAX96714 support 6 and 3 Gbps, while MAX96714F only | supports 3Gbps. | the registers map is the same, but a few values are not possible with | the 'f' version. I don't think your ordering here is correct. The 96714 should fall back to the 96714f, not the opposite that you have here, as the f is the version which supports fewer features. I think this should be: oneOf: - const: maxim,max96714f - items: - enum: - maxim,max96714 - const: maxim,max96714f Cheers, Conor. > + > + reg: > + maxItems: 1 > + > + powerdown-gpios: > + maxItems: 1 > + description: > + Specifier for the GPIO connected to the PWDNB pin. > + > + ports: > + $ref: /schemas/graph.yaml#/properties/ports > + > + properties: > + port@0: > + $ref: /schemas/graph.yaml#/properties/port > + unevaluatedProperties: false > + description: GMSL Input > + properties: > + endpoint: > + $ref: /schemas/media/video-interfaces.yaml# > + unevaluatedProperties: false > + description: > + Endpoint for GMSL2-Link port. > + > + port@1: > + $ref: /schemas/graph.yaml#/$defs/port-base > + unevaluatedProperties: false > + description: CSI-2 Output port > + > + properties: > + endpoint: > + $ref: /schemas/media/video-interfaces.yaml# > + unevaluatedProperties: false > + > + properties: > + data-lanes: > + minItems: 1 > + maxItems: 4 > + > + lane-polarities: > + minItems: 1 > + maxItems: 5 > + > + link-frequencies: > + maxItems: 1 > + > + required: > + - data-lanes > + > + required: > + - port@1 > + > + i2c-gate: > + $ref: /schemas/i2c/i2c-gate.yaml > + unevaluatedProperties: false > + description: > + The MAX96714 will pass through and forward the I2C requests from the > + incoming I2C bus over the GMSL2 link. Therefore it supports an i2c-gate > + subnode to configure a serializer. > + > + port0-poc-supply: > + description: Regulator providing Power over Coax for the GMSL port > + > +required: > + - compatible > + - reg > + - ports > + > +additionalProperties: false > + > +examples: > + - | > + #include <dt-bindings/gpio/gpio.h> > + #include <dt-bindings/media/video-interfaces.h> > + > + i2c { > + #address-cells = <1>; > + #size-cells = <0>; > + > + deserializer@28 { > + compatible = "maxim,max96714f", "maxim,max96714"; > + reg = <0x28>; > + powerdown-gpios = <&main_gpio0 37 GPIO_ACTIVE_LOW>; > + > + ports { > + #address-cells = <1>; > + #size-cells = <0>; > + port@0 { > + reg = <0>; > + max96714_gmsl_in: endpoint { > + remote-endpoint = <&max96917f_gmsl_out>; > + }; > + }; > + > + port@1 { > + reg = <1>; > + max96714_csi_out: endpoint { > + data-lanes = <1 2 3 4>; > + link-frequencies = /bits/ 64 <400000000>; > + remote-endpoint = <&csi_in>; > + }; > + }; > + }; > + > + i2c-gate { > + #address-cells = <1>; > + #size-cells = <0>; > + > + serializer@40 { > + compatible = "maxim,max96717f", "maxim,max96717"; > + reg = <0x40>; > + gpio-controller; > + #gpio-cells = <2>; > + #clock-cells = <0>; > + > + ports { > + #address-cells = <1>; > + #size-cells = <0>; > + > + port@0 { > + reg = <0>; > + max96717f_csi_in: endpoint { > + bus-type = <MEDIA_BUS_TYPE_CSI2_DPHY>; > + data-lanes = <1 2>; > + lane-polarities = <1 0 1>; > + remote-endpoint = <&sensor_out>; > + }; > + }; > + > + port@1 { > + reg = <1>; > + max96917f_gmsl_out: endpoint { > + remote-endpoint = <&max96714_gmsl_in>; > + }; > + }; > + }; > + }; > + }; > + }; > + }; > +... > -- > 2.44.0 >
Hi Conor, Thanks for your review. On 3/17/24 16:18, Conor Dooley wrote: > On Wed, Mar 13, 2024 at 10:49:20AM +0100, Julien Massot wrote: >> Add DT bindings for Maxim MAX96714 GMSL2 Deserializer. >> >> Signed-off-by: Julien Massot <julien.massot@collabora.com> >> --- >> Change since v4: >> - Add compatible for MAX96714 and use it as a fallback for MAX96714F >> - Remove extra '|' for decriptions >> - Reference 'i2c-gate' instead of 'i2c-controller' >> >> Change since v3: >> - Renamed file to maxim,max96714.yaml dropped the 'f' suffix >> - Removed mention to C-PHY since it's not supported by MAX96714 deserializers >> - Removed bus-type requirement on CSI endpoint since the device only support D-PHY >> - Removed the clock-lanes property in the dt example >> >> Change since v2: >> - remove reg description >> - rename enable gpio to powerdown >> - use generic node name: i2c, serializer, deserializer >> --- >> .../bindings/media/i2c/maxim,max96714.yaml | 176 ++++++++++++++++++ >> 1 file changed, 176 insertions(+) >> create mode 100644 Documentation/devicetree/bindings/media/i2c/maxim,max96714.yaml >> >> diff --git a/Documentation/devicetree/bindings/media/i2c/maxim,max96714.yaml b/Documentation/devicetree/bindings/media/i2c/maxim,max96714.yaml >> new file mode 100644 >> index 000000000000..59b116092834 >> --- /dev/null >> +++ b/Documentation/devicetree/bindings/media/i2c/maxim,max96714.yaml >> @@ -0,0 +1,176 @@ >> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) >> +# Copyright (C) 2024 Collabora Ltd. >> +%YAML 1.2 >> +--- >> +$id: http://devicetree.org/schemas/media/i2c/maxim,max96714.yaml# >> +$schema: http://devicetree.org/meta-schemas/core.yaml# >> + >> +title: Maxim MAX96714 GMSL2 to CSI-2 Deserializer >> + >> +maintainers: >> + - Julien Massot <julien.massot@collabora.com> >> + >> +description: >> + The MAX96714 deserializer converts GMSL2 serial inputs into MIPI >> + CSI-2 D-PHY formatted output. The device allows the GMSL2 link to >> + simultaneously transmit bidirectional control-channel data while forward >> + video transmissions are in progress. The MAX96714 can connect to one >> + remotely located serializer using industry-standard coax or STP >> + interconnects. The device cans operate in pixel or tunnel mode. In pixel mode >> + the MAX96714 can select individual video stream, while the tunnel mode forward all >> + the MIPI data received by the serializer. >> + >> + The GMSL2 serial link operates at a fixed rate of 3Gbps or 6Gbps in the >> + forward direction and 187.5Mbps in the reverse direction. >> + MAX96714F only supports a fixed rate of 3Gbps in the forward direction. >> + >> +properties: >> + compatible: >> + oneOf: >> + - enum: >> + - maxim,max96714 > > There's only once device here, make it const rather than enum. Okay fixed in v6 > >> + - items: >> + - enum: >> + - maxim,max96714f >> + - const: maxim,max96714 # fallback for 'f' variant > > Drop the comment btw, it doesn't make sense given you have an enum that > will allow for more devices and it being a fallback is obvious. That > said, given what you told me on the last version > | Yes there are a few differences visible to the software, for example the > | GMSL > | link rate since MAX96714 support 6 and 3 Gbps, while MAX96714F only > | supports 3Gbps. > | the registers map is the same, but a few values are not possible with > | the 'f' version. > I don't think your ordering here is correct. The 96714 should fall back > to the 96714f, not the opposite that you have here, as the f is the > version which supports fewer features. > > I think this should be: > > oneOf: > - const: maxim,max96714f > - items: > - enum: > - maxim,max96714 > - const: maxim,max96714f I just sent a v6 version with your suggestion. Indeed it makes more sense to use max96714/7f as a fallback for the non f variant. Best regards, Julien
diff --git a/Documentation/devicetree/bindings/media/i2c/maxim,max96714.yaml b/Documentation/devicetree/bindings/media/i2c/maxim,max96714.yaml new file mode 100644 index 000000000000..59b116092834 --- /dev/null +++ b/Documentation/devicetree/bindings/media/i2c/maxim,max96714.yaml @@ -0,0 +1,176 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright (C) 2024 Collabora Ltd. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/media/i2c/maxim,max96714.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Maxim MAX96714 GMSL2 to CSI-2 Deserializer + +maintainers: + - Julien Massot <julien.massot@collabora.com> + +description: + The MAX96714 deserializer converts GMSL2 serial inputs into MIPI + CSI-2 D-PHY formatted output. The device allows the GMSL2 link to + simultaneously transmit bidirectional control-channel data while forward + video transmissions are in progress. The MAX96714 can connect to one + remotely located serializer using industry-standard coax or STP + interconnects. The device cans operate in pixel or tunnel mode. In pixel mode + the MAX96714 can select individual video stream, while the tunnel mode forward all + the MIPI data received by the serializer. + + The GMSL2 serial link operates at a fixed rate of 3Gbps or 6Gbps in the + forward direction and 187.5Mbps in the reverse direction. + MAX96714F only supports a fixed rate of 3Gbps in the forward direction. + +properties: + compatible: + oneOf: + - enum: + - maxim,max96714 + - items: + - enum: + - maxim,max96714f + - const: maxim,max96714 # fallback for 'f' variant + + reg: + maxItems: 1 + + powerdown-gpios: + maxItems: 1 + description: + Specifier for the GPIO connected to the PWDNB pin. + + ports: + $ref: /schemas/graph.yaml#/properties/ports + + properties: + port@0: + $ref: /schemas/graph.yaml#/properties/port + unevaluatedProperties: false + description: GMSL Input + properties: + endpoint: + $ref: /schemas/media/video-interfaces.yaml# + unevaluatedProperties: false + description: + Endpoint for GMSL2-Link port. + + port@1: + $ref: /schemas/graph.yaml#/$defs/port-base + unevaluatedProperties: false + description: CSI-2 Output port + + properties: + endpoint: + $ref: /schemas/media/video-interfaces.yaml# + unevaluatedProperties: false + + properties: + data-lanes: + minItems: 1 + maxItems: 4 + + lane-polarities: + minItems: 1 + maxItems: 5 + + link-frequencies: + maxItems: 1 + + required: + - data-lanes + + required: + - port@1 + + i2c-gate: + $ref: /schemas/i2c/i2c-gate.yaml + unevaluatedProperties: false + description: + The MAX96714 will pass through and forward the I2C requests from the + incoming I2C bus over the GMSL2 link. Therefore it supports an i2c-gate + subnode to configure a serializer. + + port0-poc-supply: + description: Regulator providing Power over Coax for the GMSL port + +required: + - compatible + - reg + - ports + +additionalProperties: false + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + #include <dt-bindings/media/video-interfaces.h> + + i2c { + #address-cells = <1>; + #size-cells = <0>; + + deserializer@28 { + compatible = "maxim,max96714f", "maxim,max96714"; + reg = <0x28>; + powerdown-gpios = <&main_gpio0 37 GPIO_ACTIVE_LOW>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + port@0 { + reg = <0>; + max96714_gmsl_in: endpoint { + remote-endpoint = <&max96917f_gmsl_out>; + }; + }; + + port@1 { + reg = <1>; + max96714_csi_out: endpoint { + data-lanes = <1 2 3 4>; + link-frequencies = /bits/ 64 <400000000>; + remote-endpoint = <&csi_in>; + }; + }; + }; + + i2c-gate { + #address-cells = <1>; + #size-cells = <0>; + + serializer@40 { + compatible = "maxim,max96717f", "maxim,max96717"; + reg = <0x40>; + gpio-controller; + #gpio-cells = <2>; + #clock-cells = <0>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + max96717f_csi_in: endpoint { + bus-type = <MEDIA_BUS_TYPE_CSI2_DPHY>; + data-lanes = <1 2>; + lane-polarities = <1 0 1>; + remote-endpoint = <&sensor_out>; + }; + }; + + port@1 { + reg = <1>; + max96917f_gmsl_out: endpoint { + remote-endpoint = <&max96714_gmsl_in>; + }; + }; + }; + }; + }; + }; + }; +...
Add DT bindings for Maxim MAX96714 GMSL2 Deserializer. Signed-off-by: Julien Massot <julien.massot@collabora.com> --- Change since v4: - Add compatible for MAX96714 and use it as a fallback for MAX96714F - Remove extra '|' for decriptions - Reference 'i2c-gate' instead of 'i2c-controller' Change since v3: - Renamed file to maxim,max96714.yaml dropped the 'f' suffix - Removed mention to C-PHY since it's not supported by MAX96714 deserializers - Removed bus-type requirement on CSI endpoint since the device only support D-PHY - Removed the clock-lanes property in the dt example Change since v2: - remove reg description - rename enable gpio to powerdown - use generic node name: i2c, serializer, deserializer --- .../bindings/media/i2c/maxim,max96714.yaml | 176 ++++++++++++++++++ 1 file changed, 176 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/i2c/maxim,max96714.yaml