[PATCH v2 1/4] dt-bindings: media: i2c: st,vd55g1: Add ST VD55G0

[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, with the same supplies,
reset and strobe GPIOs as the VD55G1. Its MIPI rate runs from 750 to
1200 Mbps (UM2829, 13.1), so its link frequency starts at 375 MHz, and
its I2C address is set in its NVM rather than fixed.

allOf moves below required to carry the if/then for that minimum.

Assisted-by: Claude:claude-opus-5-5
Signed-off-by: Sergey Lebedev <lsa.uz@pm.me>
---
v2: the VD55G0 joins this file instead of a st,vd55g0.yaml of its own,
with allOf below required for the if/then, as Krzysztof pointed to. It
is Peter Marshall's 01/11 and 02/11 of his vd55g1 v2 squashed, as
Krzysztof asked there, with the VD55G0's description added:
https://lore.kernel.org/all/20260918221705.323510-3-pm@petermarshall.ca/

 .../bindings/media/i2c/st,vd55g1.yaml         | 27 ++++++++++++++++---
 1 file changed, 23 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/media/i2c/st,vd55g1.yaml b/Documentation/devicetree/bindings/media/i2c/st,vd55g1.yaml
index dfd87beba06..0245673d105 100644
--- a/Documentation/devicetree/bindings/media/i2c/st,vd55g1.yaml
+++ b/Documentation/devicetree/bindings/media/i2c/st,vd55g1.yaml
@@ -16,21 +16,23 @@ description: |-
  array size of 804H x 704V. It is programmable through I2C interface. The I2C
  address is fixed to 0x10.
 
+ The VD55G0 is a monochrome global shutter image sensor with an active array
+ size of 644H x 604V, programmable through I2C at an address set in its NVM.
+
  Image data is sent through MIPI CSI-2, which is configured as only 1 data
  lane. The sensor provides 4 GPIOS that can be used for external LED signal
  (synchronized with sensor integration periods).
 
-allOf:
-  - $ref: /schemas/media/video-interface-devices.yaml#
-
 properties:
   compatible:
     enum:
+      - st,vd55g0
       - st,vd55g1
       - st,vd55g4
       - st,vd65g4
     description:
-      VD55G1 and VD55G4 are monochrome variants, while VD65G4 is a color one.
+      VD55G0, VD55G1 and VD55G4 are monochrome variants, while VD65G4 is a
+      color one.
 
   reg:
     maxItems: 1
@@ -101,6 +103,23 @@ required:
   - reset-gpios
   - port
 
+allOf:
+  - $ref: /schemas/media/video-interface-devices.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: st,vd55g0
+    then:
+      properties:
+        port:
+          properties:
+            endpoint:
+              properties:
+                link-frequencies:
+                  items:
+                    minimum: 375000000
+
 unevaluatedProperties: false
 
 examples:
-- 
2.54.0