[PATCH 1/4] dt-bindings: media: i2c: Add ST VD55G0 camera sensor

[Sergey Lebedev <lsa.uz@pm.me>]

The VD55G0 is a monochrome global shutter sensor with a 644x604 active
array, sending over a single MIPI CSI-2 lane.

Merged from ST's own binding in STMicroelectronics/vd55g0-linux-driver,
which gives the supply voltages, and st,vd55g1.yaml, whose conventions and
property list it follows. ST's st,out-sync and st,in-sync are left out, as
in vd55g1. Link frequencies run from 375 to 600 MHz, for the sensor's MIPI
rate of 750 to 1200 Mbps (UM2829, 13.1).

Co-developed-by: Benjamin Mugnier <benjamin.mugnier@foss.st.com>
Signed-off-by: Benjamin Mugnier <benjamin.mugnier@foss.st.com>
Assisted-by: Claude:claude-opus-5-5
Signed-off-by: Sergey Lebedev <lsa.uz@pm.me>
---
The properties follow st,vd55g1.yaml nearly line for line. If a
compatible in that file is preferred, with an if/then for the
link-frequency minimum, I can fold it in there.

 .../bindings/media/i2c/st,vd55g0.yaml         | 137 ++++++++++++++++++
 1 file changed, 137 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/i2c/st,vd55g0.yaml

diff --git a/Documentation/devicetree/bindings/media/i2c/st,vd55g0.yaml b/Documentation/devicetree/bindings/media/i2c/st,vd55g0.yaml
new file mode 100644
index 00000000000..be03d7e8b9c
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/st,vd55g0.yaml
@@ -0,0 +1,137 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright (c) 2026 STMicroelectronics SA.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/i2c/st,vd55g0.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: STMicroelectronics VD55G0 Global Shutter Image Sensor
+
+maintainers:
+  - Benjamin Mugnier <benjamin.mugnier@foss.st.com>
+  - Sylvain Petinot <sylvain.petinot@foss.st.com>
+
+description: |-
+ The STMicroelectronics VD55G0 is a monochrome global shutter image sensor
+ with an active array size of 644H x 604V. It is programmable through an I2C
+ interface.
+
+ Image data is sent through MIPI CSI-2, over a single data lane. The sensor
+ provides 4 GPIOs, which can drive a strobe light source synchronised with the
+ exposure period.
+
+allOf:
+  - $ref: /schemas/media/video-interface-devices.yaml#
+
+properties:
+  compatible:
+    const: st,vd55g0
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  vcore-supply:
+    description: Digital core power supply (1.2V)
+
+  vddio-supply:
+    description: Digital IO power supply (1.8V)
+
+  vana-supply:
+    description: Analog power supply (2.8V)
+
+  reset-gpios:
+    description: Sensor reset active low GPIO (XSHUTDOWN)
+    maxItems: 1
+
+  st,leds:
+    description:
+      List of sensor GPIOs used to control strobe light sources during the
+      exposure time. The numbers identify the sensor pin on which the
+      illumination system is connected. GPIOs are active-high.
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    minItems: 1
+    maxItems: 4
+    items:
+      minimum: 0
+      maximum: 3
+
+  port:
+    $ref: /schemas/graph.yaml#/$defs/port-base
+    additionalProperties: false
+
+    properties:
+      endpoint:
+        $ref: /schemas/media/video-interfaces.yaml#
+        unevaluatedProperties: false
+
+        properties:
+          data-lanes:
+            items:
+              - const: 1
+
+          link-frequencies:
+            maxItems: 1
+            items:
+              minimum: 375000000
+              maximum: 600000000
+            description:
+              The MIPI output runs at twice the link frequency, 750 to 1200
+              Mbps, and at an integer multiple of the input clock frequency.
+
+          lane-polarities:
+            minItems: 1
+            maxItems: 2
+
+        required:
+          - data-lanes
+          - link-frequencies
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - vcore-supply
+  - vddio-supply
+  - vana-supply
+  - reset-gpios
+  - port
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/media/video-interface-devices.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        camera-sensor@60 {
+            compatible = "st,vd55g0";
+            reg = <0x60>;
+
+            clocks = <&camera_clk_12M>;
+
+            vcore-supply = <&camera_vcore_v1v2>;
+            vddio-supply = <&camera_vddio_v1v8>;
+            vana-supply = <&camera_vana_v2v8>;
+
+            reset-gpios = <&gpio 5 GPIO_ACTIVE_LOW>;
+            st,leds = <1>;
+
+            orientation = <MEDIA_ORIENTATION_FRONT>;
+            rotation = <0>;
+
+            port {
+                endpoint {
+                    data-lanes = <1>;
+                    link-frequencies = /bits/ 64 <402000000>;
+                    remote-endpoint = <&csiphy0_ep>;
+                };
+            };
+        };
+    };
-- 
2.54.0