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Groups > linux.debian.kernel > #93400

Bug#1142442: linux: no installer udeb ships reset-gpio, breaking SDIO Wi-Fi (mmc-pwrseq-simple) in d-i on ARM Chromebooks

From Cyril Brulebois <kibi@debian.org>
Newsgroups linux.debian.bugs.dist, linux.debian.maint.boot, linux.debian.kernel
Subject Bug#1142442: linux: no installer udeb ships reset-gpio, breaking SDIO Wi-Fi (mmc-pwrseq-simple) in d-i on ARM Chromebooks
Date 2026-07-20 03:00 +0200
Message-ID <NiKwp-5Nu4-1@gated-at.bofh.it> (permalink)
References <NiJK2-5NdF-1@gated-at.bofh.it> <NiJK2-5NdF-1@gated-at.bofh.it>
Organization Debian

Cross-posted to 3 groups.

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Hi Daniel,

Daniel Golle <daniel@makrotopia.org> (2026-07-20):
> Package: src:linux
> Version: 7.1.3-1
> Severity: normal
> Tags: patch
> X-Debbugs-Cc: debian-boot@lists.debian.org
> 
> Dear Maintainers,
> 
> The debian-installer initrds for arm64 cannot bring up SDIO-attached
> Wi-Fi devices sitting behind an mmc-pwrseq-simple power sequencer,
> because the reset-gpio module is not included in any installer udeb.
> 
> Observed on a MediaTek MT8186 Chromebook (Lenovo IdeaPad Slim 3
> Chrome 14M868, device-tree compatible google,steelix-sku393221,
> "corsola" family) with an MT7921S Wi-Fi module on SDIO, booting the
> current daily arm64 netboot installer (kernel 7.1.3+deb14-arm64):
> ethdetect finds no NIC, manually loading mt7921s does nothing, and
> /sys/kernel/debug/devices_deferred shows:
> 
>   wifi-pwrseq     pwrseq_simple: reset control not ready
>   11240000.mmc    platform: supplied wifi-pwrseq not ready

[…]

From an installer team point of view: great work, thank you!


Cheers,
-- 
Cyril Brulebois (kibi@debian.org)            <https://debamax.com/>
D-I release manager -- Release team member -- Freelance Consultant

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Bug#1142442: linux: no installer udeb ships reset-gpio, breaking SDIO Wi-Fi (mmc-pwrseq-simple) in d-i on ARM Chromebooks Daniel Golle <daniel@makrotopia.org> - 2026-07-20 02:10 +0200
  Bug#1142442: linux: no installer udeb ships reset-gpio, breaking SDIO Wi-Fi (mmc-pwrseq-simple) in d-i on ARM Chromebooks Cyril Brulebois <kibi@debian.org> - 2026-07-20 03:00 +0200

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