Claude review: dt-bindings: display: panel: document the Renesas R63419 based dual-DSI video mode Display Panels

[Claude Code Review Bot <claude-review@example.com>]

Patch Review

This patch adds a YAML DT binding for the R63419-based panels. Generally well-structured.

**Issue: Swapped vsp/vsn supply phandle names in the example**

```yaml
            vsn-supply = <&vdd_5v0_pos>;
            vsp-supply = <&vdd_5v0_neg>;
```

VSP is "Voltage Supply Positive" and VSN is "Voltage Supply Negative". The example connects VSP to `vdd_5v0_neg` and VSN to `vdd_5v0_pos`. While phandle names are arbitrary, this is confusing and likely copy-paste error. Should be:

```yaml
            vsp-supply = <&vdd_5v0_pos>;
            vsn-supply = <&vdd_5v0_neg>;
```

**Minor: `ports` could specify the port layout**

The binding declares `ports: true` but doesn't describe the expected port structure (port@0 = primary DSI, port@1 = secondary DSI). Other dual-DSI bindings sometimes specify this. The example makes it clear, but a schema-level description of the two ports would be more robust.

**Minor: `reg` not listed as required**

DSI panel nodes typically require `reg`. It's defined in the `properties` section but not listed in `required`. This may be inherited from `panel-common.yaml`, but worth verifying.

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Generated by Claude Code Patch Reviewer