Claude review: dt-bindings: display: ti, am65x-dss: Fix AM62L DSS reg and clock constraints

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

Patch Review

**Overall: Good patch. The logic is correct and the YAML schema structure is sound.**

**Positive aspects:**

- The `oneOf` for `reg` correctly differentiates AM62L's 5 registers (common, vidl1, ovr1, vp1, common1) from the dual-VP variants' 8 registers (adding vid, ovr2, vp2). This accurately reflects that AM62L lacks the full VID plane, the second overlay manager, and the second video port.

- The `reg-names` `oneOf` is kept in sync with the `reg` `oneOf`, maintaining the correct name-to-register mapping.

- The `if`/`then`/`else` conditional tightly binds the register and clock counts to the `compatible` string, preventing mismatched DTs from validating:

```yaml
    then:
      properties:
        clock-names:
          maxItems: 2
        clocks:
          maxItems: 2
        reg:
          maxItems: 5
    else:
      properties:
        clock-names:
          minItems: 3
        clocks:
          minItems: 3
        reg:
          minItems: 8
```

**Minor observations (not blocking):**

1. **Base `clocks`/`clock-names` still list 3 items:** The base `items` array still describes all 3 clocks (fck, vp1, vp2), with `minItems: 2` added to relax the requirement. For AM62L (maxItems: 2), the third item schema (vp2) becomes dead/unreachable. This is functionally correct — JSON Schema tuple validation simply won't exercise the third schema — but it could be slightly clearer if a comment or the description noted that vp2 only applies to dual-VP variants. This is purely a readability nit.

2. **Commit message formatting:** The subject line wraps oddly across two lines in the mbox:
   ```
   Subject: [PATCH v3] dt-bindings: display: ti,
    am65x-dss: Fix AM62L DSS reg and clock constraints
   ```
   This appears to be an artifact of the mail header folding (the comma after "ti" triggers the line wrap). It should be fine when applied via `git am`, but worth verifying the subject renders correctly.

3. **No example DT for AM62L:** The `examples:` section has DT snippets for `am65x-dss` and `am625-dss` but none for `am62l-dss`. Adding an AM62L example with the 5-register, 2-clock layout would be helpful for validation and documentation, but this could reasonably be done as a separate follow-up patch. The gist linked in the changelog shows the author has validated with examples externally.

4. **Schema cross-validation:** The `oneOf` on `reg`/`reg-names` and the `if`/`then`/`else` on counts are intentionally redundant — the `oneOf` constrains the valid layouts structurally, while the conditional constrains the counts per-compatible. Together they ensure that e.g. `ti,am62l-dss` with 8 registers would fail both the `maxItems: 5` check and (potentially) the `oneOf` matching. This belt-and-suspenders approach is good practice in dt-bindings.

**No functional issues found. The patch correctly fixes the AM62L DSS binding constraints.**

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