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The MAX96712 can support both a CSI-2 C-PHY and D-PHY bus. The initial staging driver however only supported D-PHY and the bus-type property was left optional. In preparation for adding C-PHY support to the staging driver make the bus-type property mandatory as it is needed to select the correct PHY mode. Without the bus-type property present, the driver falls-back to D-PHY mode, so the change is functionally backward compatible with old DTS files lacking the property. The only in-tree DTS file (renesas/r8a779a0-falcon-csi-dsi.dtsi) that lacked the property uses D-PHY and have been updated. Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
119 lines
3.4 KiB
YAML
119 lines
3.4 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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# Copyright (C) 2021 Renesas Electronics Corp.
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/media/i2c/maxim,max96712.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Quad GMSL2 to CSI-2 Deserializer with GMSL1 Compatibility
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maintainers:
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- Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
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description: |
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The MAX96712 deserializer converts GMSL2 or GMSL1 serial inputs into MIPI
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CSI-2 D-PHY or C-PHY formatted outputs. The device allows each link to
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simultaneously transmit bidirectional control-channel data while forward
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video transmissions are in progress. The MAX96712 can accommodate as many as
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four remotely located sensors using industry-standard coax or STP
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interconnects.
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Each GMSL2 serial link operates at a fixed rate of 3Gbps or 6Gbps in the
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forward direction and 187.5Mbps in the reverse direction. In GMSL1 mode, the
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MAX96712 can be paired with first-generation 3.12Gbps or 1.5Gbps GMSL1
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serializers or operate up to 3.12Gbps with GMSL2 serializers in GMSL1 mode.
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properties:
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compatible:
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const: maxim,max96712
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reg:
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description: I2C device address
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maxItems: 1
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enable-gpios: true
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ports:
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$ref: /schemas/graph.yaml#/properties/ports
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properties:
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port@0:
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$ref: /schemas/graph.yaml#/properties/port
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description: GMSL Input 0
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port@1:
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$ref: /schemas/graph.yaml#/properties/port
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description: GMSL Input 1
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port@2:
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$ref: /schemas/graph.yaml#/properties/port
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description: GMSL Input 2
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port@3:
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$ref: /schemas/graph.yaml#/properties/port
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description: GMSL Input 3
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port@4:
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$ref: /schemas/graph.yaml#/$defs/port-base
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unevaluatedProperties: false
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description: CSI-2 Output
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properties:
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endpoint:
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$ref: /schemas/media/video-interfaces.yaml#
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unevaluatedProperties: false
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properties:
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data-lanes: true
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bus-type:
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enum:
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- 1 # MEDIA_BUS_TYPE_CSI2_CPHY
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- 4 # MEDIA_BUS_TYPE_CSI2_DPHY
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required:
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- data-lanes
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- bus-type
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required:
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- port@4
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required:
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- compatible
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- reg
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- ports
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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#include <dt-bindings/media/video-interfaces.h>
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i2c@e6508000 {
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#address-cells = <1>;
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#size-cells = <0>;
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reg = <0 0xe6508000>;
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gmsl0: gmsl-deserializer@49 {
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compatible = "maxim,max96712";
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reg = <0x49>;
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enable-gpios = <&pca9654_a 0 GPIO_ACTIVE_HIGH>;
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ports {
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#address-cells = <1>;
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#size-cells = <0>;
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port@4 {
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reg = <4>;
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max96712_out0: endpoint {
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bus-type = <MEDIA_BUS_TYPE_CSI2_DPHY>;
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clock-lanes = <0>;
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data-lanes = <1 2 3 4>;
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remote-endpoint = <&csi40_in>;
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};
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};
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};
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};
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};
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