[PATCH v2 07/15] drm/bridge: inno-hdmi: Add .mode_valid platform operation
sashiko-bot at kernel.org
sashiko-bot at kernel.org
Fri Aug 28 06:52:32 PDT 2026
> inno_hdmi_bridge_mode_valid() validates the pixel clock against
> hdmi->refclk, but that clock is optional and is only present on
> platforms that describe a "ref" clock. Platforms where the pixel clock
> is produced by a separate device - such as the StarFive JH7110, whose
> PHY is both the clock and the PHY provider - have no "ref" clock, so
> the check is skipped entirely and every mode is reported as valid.
>
> A mode the platform cannot generate is then advertised to userspace.
> The subsequent modeset appears to succeed, since the atomic enable path
> cannot fail, and the display silently stays blank.
>
> Add a .mode_valid platform operation so platforms can reject modes they
> are unable to drive. Platforms that do not implement it are unaffected.
>
> Signed-off-by: Michal Wilczynski <m.wilczynski at samsung.com>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20260828-jh7110-clean-send-v2-0-331680c8b9d1@samsung.com?part=7
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