Claude review: drm/amdgpu: Add HAINAN clock adjustment

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

Overall Series Review

Subject: drm/amdgpu: Add HAINAN clock adjustment
Author: decce6 <decce6@proton.me>
Patches: 1
Reviewed: 2026-02-11T16:34:52.186882

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This is a single-patch series that adds clock speed limiting for the AMD Radeon R5 M420 GPU (HAINAN chipset, PCI device ID 0x666f, revision 0x00). The patch reduces maximum clock speeds from 850/1000MHz to 800/950MHz (core/memory) to address stability issues.

**Overall Assessment: NEEDS WORK**

The patch addresses a legitimate stability concern, but has several issues that need to be addressed before it can be merged:

1. **Missing justification**: No explanation of why these specific clock values were chosen or what testing was performed
2. **Incomplete commit message**: Lacks hardware details, symptom description, and testing methodology
3. **Hardcoded values without documentation**: Magic numbers with no explanation
4. **Potential scope concern**: Only targets one specific revision; unclear if other R5 M420 variants exist
5. **Missing references**: No bug reports, user reports, or hardware documentation cited

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Generated by Claude Code Patch Reviewer