Claude review: drm/bridge: tc358762: Various small fixes

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Overall Series Review

Subject: drm/bridge: tc358762: Various small fixes
Author: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Patches: 14
Reviewed: 2026-05-16T12:04:20.988257

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This is a well-structured 13-patch series from Tomi Valkeinen fixing the TC358762 DSI-to-DPI bridge driver. The series progresses logically: first cleaning up register defines (patches 1-3), then reordering initialization (patch 4), removing dead code (patch 5), fixing DPI enable sequencing (patch 6), documenting constraints (patch 7), adding VTG support (patch 8), fixing polarity bugs (patches 9, 12), refactoring (patches 10-11), and finally fixing the companion panel timings (patch 13).

The register define corrections in patch 3 are the key insight — the old defines were wrong but happened to produce the correct bit pattern by coincidence (`LCDCTRL_VSDELAY(1) | LCDCTRL_RGB888 | LCDCTRL_UNK6 | LCDCTRL_VTGEN` = `FIELD_PREP(LCDCTRL_PXLFORM, RGB888) | LCDCTRL_DPI_EN | LCDCTRL_DCLK_POL` = 0x100150). I verified both the SYSCTRL (0x040f) and LCDCTRL (0x100150) values are preserved exactly through the define cleanup, so the "no functional change" claim is correct.

The series is well-ordered for bisectability and each patch is reasonably self-contained. One issue worth flagging is the missing NULL checks in patch 11.

**Recommendation: Looks good overall. One minor issue (missing NULL check) worth addressing.**

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