[Bug 300175] SDHCI Controller Timeout on ASUS VivoBook 15

From: <bugzilla-noreply_at_freebsd.org>
Date: Wed, 28 Oct 2026 21:43:54 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=300175

--- Comment #2 from Anna Fireshevsky <l.snday.l@gmail.com> ---
(In reply to Michael Osipov from comment #1)
I knew the problem was related to the pci sdhci driver. I opened sdhci_pci.c
source file, checked the sdhci devices table, and noticed that my sdhci
controller wasn't listed there

I found a quirk SDHCI_QUIRK_BROKEN_TIMEOUT_VAL (4096), that matched the
"Controller Timeout" error description. Tested it with `sysctl
hw.sdhci.quirk_set=4096` after a reboot, the error didn't pop up

I also checked the linux kernel driver (where this device works fine), which
confirmed this is the correct fix

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