175 lines
4.9 KiB
YAML
175 lines
4.9 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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# Copyright (C) 2024 Collabora Ltd.
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/media/i2c/maxim,max96714.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Maxim MAX96714 GMSL2 to CSI-2 Deserializer
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maintainers:
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- Julien Massot <julien.massot@collabora.com>
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description:
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The MAX96714 deserializer converts GMSL2 serial inputs into MIPI
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CSI-2 D-PHY formatted output. The device allows the GMSL2 link to
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simultaneously transmit bidirectional control-channel data while forward
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video transmissions are in progress. The MAX96714 can connect to one
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remotely located serializer using industry-standard coax or STP
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interconnects. The device cans operate in pixel or tunnel mode. In pixel mode
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the MAX96714 can select individual video stream, while the tunnel mode forward all
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the MIPI data received by the serializer.
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The 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.
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MAX96714F only supports a fixed rate of 3Gbps in the forward direction.
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properties:
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compatible:
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oneOf:
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- const: maxim,max96714f
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- items:
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- enum:
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- maxim,max96714
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- const: maxim,max96714f
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reg:
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maxItems: 1
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powerdown-gpios:
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maxItems: 1
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description:
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Specifier for the GPIO connected to the PWDNB pin.
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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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unevaluatedProperties: false
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description: GMSL Input
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properties:
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endpoint:
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$ref: /schemas/media/video-interfaces.yaml#
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unevaluatedProperties: false
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description:
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Endpoint for GMSL2-Link port.
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port@1:
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$ref: /schemas/graph.yaml#/$defs/port-base
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unevaluatedProperties: false
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description: CSI-2 Output port
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properties:
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endpoint:
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$ref: /schemas/media/video-interfaces.yaml#
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unevaluatedProperties: false
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properties:
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data-lanes:
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minItems: 1
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maxItems: 4
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lane-polarities:
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minItems: 1
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maxItems: 5
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link-frequencies:
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maxItems: 1
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required:
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- data-lanes
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required:
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- port@1
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i2c-gate:
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$ref: /schemas/i2c/i2c-gate.yaml
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unevaluatedProperties: false
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description:
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The MAX96714 will pass through and forward the I2C requests from the
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incoming I2C bus over the GMSL2 link. Therefore it supports an i2c-gate
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subnode to configure a serializer.
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port0-poc-supply:
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description: Regulator providing Power over Coax for the GMSL port
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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 {
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#address-cells = <1>;
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#size-cells = <0>;
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deserializer@28 {
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compatible = "maxim,max96714f";
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reg = <0x28>;
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powerdown-gpios = <&main_gpio0 37 GPIO_ACTIVE_LOW>;
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ports {
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#address-cells = <1>;
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#size-cells = <0>;
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port@0 {
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reg = <0>;
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max96714_gmsl_in: endpoint {
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remote-endpoint = <&max96917f_gmsl_out>;
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};
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};
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port@1 {
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reg = <1>;
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max96714_csi_out: endpoint {
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data-lanes = <1 2 3 4>;
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link-frequencies = /bits/ 64 <400000000>;
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remote-endpoint = <&csi_in>;
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};
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};
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};
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i2c-gate {
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#address-cells = <1>;
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#size-cells = <0>;
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serializer@40 {
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compatible = "maxim,max96717f";
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reg = <0x40>;
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gpio-controller;
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#gpio-cells = <2>;
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#clock-cells = <0>;
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ports {
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#address-cells = <1>;
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#size-cells = <0>;
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port@0 {
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reg = <0>;
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max96717f_csi_in: endpoint {
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data-lanes = <1 2>;
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lane-polarities = <1 0 1>;
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remote-endpoint = <&sensor_out>;
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};
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};
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port@1 {
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reg = <1>;
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max96917f_gmsl_out: endpoint {
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remote-endpoint = <&max96714_gmsl_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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};
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};
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...
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