Hi Sakari,
On 2/9/24 10:28, Sakari Ailus wrote:
Hi Julien,
On Thu, Jan 11, 2024 at 02:03:46PM +0100, Julien Massot wrote:
Add DT bindings for Maxim MAX96717F GMSL2 Serializer.
Signed-off-by: Julien Massot <julien.massot@xxxxxxxxxxxxx>
---
Change since v2:
- remove reg description
- add data lanes min/maxItems
- Use generic node name
---
.../bindings/media/i2c/maxim,max96717f.yaml | 147 ++++++++++++++++++
1 file changed, 147 insertions(+)
create mode 100644 Documentation/devicetree/bindings/media/i2c/maxim,max96717f.yaml
diff --git a/Documentation/devicetree/bindings/media/i2c/maxim,max96717f.yaml b/Documentation/devicetree/bindings/media/i2c/maxim,max96717f.yaml
new file mode 100644
index 000000000000..f31517b1dbc8
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/maxim,max96717f.yaml
@@ -0,0 +1,147 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2024 Collabora Ltd.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/i2c/maxim,max96717f.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MAX96717 CSI-2 to GMSL2 Serializer
+
+maintainers:
+ - Julien Massot <julien.massot@xxxxxxxxxxxxx>
+
+description: |
+ The MAX96717F serializer converts MIPI CSI-2 D-PHY or C-PHY formatted input
Presumably this will need to be configured on the device? You should thus
require the bus-type property in the endpoint.
Yes I will add the bus-type propery
+ into GMSL2 serial outputs. The device allows the GMSL2 link to
+ simultaneously transmit bidirectional control-channel data while forward
+ video transmissions are in progress. The MAX96717F can connect to one
+ remotely located deserializer using industry-standard coax or STP
+ interconnects. The device cans operate in pixel or tunnel mode. In pixel mode
+ the MAX96717F can select the MIPI datatype, while the tunnel mode forward all the MIPI
+ data received by the serializer.
+ The MAX96717F supports Reference Over Reverse (channel),
+ to generate a clock output for the sensor from the GMSL reverse channel.
+
+ The GMSL2 serial link operates at a fixed rate of 3Gbps in the
+ forward direction and 187.5Mbps in the reverse direction.
+
+properties:
+ compatible:
+ const: maxim,max96717f
+
+ '#gpio-cells':
+ const: 2
+ description:
+ First cell is the GPIO pin number, second cell is the flags. The GPIO pin
+ number must be in range of [0, 10].
+
+ gpio-controller: true
+
+ '#clock-cells':
+ const: 0
+
+ reg:
+ maxItems: 1
+
+ ports:
+ $ref: /schemas/graph.yaml#/properties/ports
+
+ properties:
+ port@0:
+ $ref: /schemas/graph.yaml#/$defs/port-base
+ unevaluatedProperties: false
+ description: CSI-2 Input port
+
+ properties:
+ endpoint:
+ $ref: /schemas/media/video-interfaces.yaml#
+ unevaluatedProperties: false
+
+ properties:
+ data-lanes:
+ minItems: 1
+ maxItems: 4
+
+ required:
+ - data-lanes
+
+ port@1:
+ $ref: /schemas/graph.yaml#/properties/port
+ unevaluatedProperties: false
+ description: GMSL Output port
+
+ required:
+ - port@1
+
+ i2c-gate:
+ $ref: /schemas/i2c/i2c-controller.yaml
+ unevaluatedProperties: false
+ description: |
I think you can remove ' |'.
Ok
+ The MAX96717F will forward the I2C requests from the
+ incoming GMSL2 link. Therefore, it supports an i2c-gate
+ subnode to configure a sensor.
+
+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>;
+ serializer: serializer@40 {
+ compatible = "maxim,max96717f";
+ 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 {
+ data-lanes = <1 2 3 4>;
+ remote-endpoint = <&sensor_out>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+ max96917f_gmsl_out: endpoint {
+ remote-endpoint = <&deser_gmsl_in>;
+ };
+ };
+ };
+
+ i2c-gate {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ sensor@10 {
+ compatible = "st,st-vgxy61";
+ reg = <0x10>;
+ reset-gpios = <&serializer 0 GPIO_ACTIVE_LOW>;
+ clocks = <&serializer>;
+ VCORE-supply = <&v1v2>;
+ VDDIO-supply = <&v1v8>;
+ VANA-supply = <&v2v8>;
+ port {
+ sensor_out: endpoint {
+ data-lanes = <1 2 3 4>;
+ remote-endpoint = <&max96717f_csi_in>;
+ };
+ };
+ };
+ };
+ };
+ };
+...
--
Julien Massot
Senior Software Engineer
Collabora Ltd.
Platinum Building, St John's Innovation Park, Cambridge CB4 0DS, UK
Registered in England & Wales, no. 5513718
