[PATCH v3 6/7] media: dt-bindings: add NXP i.MX95 compatible string

[Guoniu Zhou]

The i.MX95 CSI-2 controller is nearly identical to i.MX93, with the
main difference being the data output interface:

i.MX93 use IPI (Image Pixel Interface), which requires:
- Pixel clock input
- Software configuration through registers

i.MX95 uses IDI (Image Data Interface), which:
- Does not require pixel clock
- Is software transparent (no register configuration needed)

Due to these differences in register layout and initialization needs,
the two variants cannot share the same compatible string. The driver
needs to distinguish between them to handle the interface correctly.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxxxxxxxx>
Reviewed-by: Frank Li <Frank.Li@xxxxxxx>
Signed-off-by: Guoniu Zhou <guoniu.zhou@xxxxxxxxxxx>
---
Changes in v3:
- Add Reviewed-by tag from Krzysztof Kozlowski

Changes in v2:
- Add dedicated constraint block for i.MX95 to reflect different clock
  requirements (only per clock needed vs i.MX93 which needs both per
  and pixel clocks)
- Update commit message to include more details about interface differences
---
 .../bindings/media/rockchip,rk3568-mipi-csi2.yaml        | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/Documentation/devicetree/bindings/media/rockchip,rk3568-mipi-csi2.yaml b/Documentation/devicetree/bindings/media/rockchip,rk3568-mipi-csi2.yaml
index 4ac4a3b6f406..4e0bc75c2136 100644
--- a/Documentation/devicetree/bindings/media/rockchip,rk3568-mipi-csi2.yaml
+++ b/Documentation/devicetree/bindings/media/rockchip,rk3568-mipi-csi2.yaml
@@ -18,6 +18,7 @@ properties:
   compatible:
     enum:
       - fsl,imx93-mipi-csi2
+      - fsl,imx95-mipi-csi2
       - rockchip,rk3568-mipi-csi2
 
   reg:
@@ -135,6 +136,21 @@ allOf:
         clock-names:
           minItems: 2
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: fsl,imx95-mipi-csi2
+    then:
+      properties:
+        interrupts:
+          maxItems: 1
+        interrupt-names: false
+        clocks:
+          maxItems: 1
+        clock-names:
+          maxItems: 1
+
 examples:
   - |
     #include <dt-bindings/clock/rk3568-cru.h>

-- 
2.34.1