Claude review: drm/ipv3: add CONFIG_OF dependency for DRM_OF_DISPLAY_MODE_BRIDGE

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Overall Series Review

Subject: drm/ipv3: add CONFIG_OF dependency for DRM_OF_DISPLAY_MODE_BRIDGE
Author: Arnd Bergmann <arnd@kernel.org>
Patches: 4
Reviewed: 2026-05-05T11:36:17.719753

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This is a single patch from Arnd Bergmann fixing a Kconfig dependency issue where `DRM_OF_DISPLAY_MODE_BRIDGE` (which depends on `OF`) gets force-selected by `DRM_IMX_PARALLEL_DISPLAY` and `DRM_IMX_LDB` even when `OF` is disabled (reachable via `COMPILE_TEST`). The Kconfig `select` mechanism notoriously overrides `depends on`, so the selecting symbols must carry the dependency themselves.

The fix is correct and the standard approach for this class of Kconfig problem. The patch is minimal and well-targeted.

**Note:** This patch does not apply cleanly to the current drm-next tree. In drm-next, the `DRM_OF_DISPLAY_MODE_BRIDGE` symbol has already been renamed to `DRM_IMX_LEGACY_BRIDGE`, and that renamed config no longer carries a `depends on OF` (only `depends on DRM_IMX`). However, `DRM_IMX_LEGACY_BRIDGE` still uses `of_get_drm_display_mode()` per its own help text, so the underlying issue may persist in a different form on drm-next — the OF dependency was apparently dropped during the rename rather than being pushed to the callers. The patch is presumably targeting the tree where `DRM_OF_DISPLAY_MODE_BRIDGE` still exists.

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