This bug was fixed in the package linux-raspi - 6.8.0-1024.28
---------------
linux-raspi (6.8.0-1024.28) noble; urgency=medium
* noble/linux-raspi: 6.8.0-1024.28 -proposed tracker (LP: #2107068)
* Remove obsolete build flags in derivative kernels (LP: #2077306)
- [Packaging] raspi: Remove obsolete do_source_package build flag
* Packaging resync (LP: #1786013)
- [Packaging] debian.raspi/dkms-versions -- update from kernel-versions
(main/s2025.03.17)
* mmc0 error on boot with eMMC CM5 (LP: #2089555)
- DTS: bcm2712: emmc2 clock frequency is 200MHz
- DTS: bcm2712: defer SDIO1 CQE selection to the board dtb
- dts: bcm2712: cm5: Disable HS400
- dts: bcm2712: cm5: There is no card detect signal
- dts: bcm2712: cm5: Add antenna controls
- dts: bcm2712: cm5: Force the ANT pins to GPIOs
- dts: bcm2712: cm5: fix typo and declare HS400es support
* GPIO sysfs disabled in raspi kernel (LP: #2099685)
- [Config] raspi: Set GPIO_SYSFS=y
* Kernel compiled with different CONFIG_SERIAL_8250_NR_UARTS to Raspberry Pi
OS (LP: #2096796)
- [Config] raspi: Set SERIAL_8250_NR_UARTS=16
-- Juerg Haefliger <juerg.haefli...@canonical.com> Thu, 17 Apr 2025
13:09:26 +0200
** Changed in: linux-raspi (Ubuntu Noble)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/2089555
Title:
mmc0 error on boot with eMMC CM5
Status in linux-raspi package in Ubuntu:
Confirmed
Status in linux-raspi source package in Noble:
Fix Released
Bug description:
[ Impact ]
When attempting to boot the Ubuntu 24.04 image on an eMMC variant of
the CM5, attached to a CM4 I/O carrier board, the boot hangs fairly
early on, just presumably at the point it attempts to mount the "real"
root. The following error message is repeated on the console:
[ 14.648143] mmc0: mmc_select_hs400 failed, error -84
[ 14.653123] mmc0: error -84 whilst initialising MMC card
This occurs with both the noble release kernel (6.8.0-1004.4), and
with an image built from up to date sources using the noble-updates
kernel (6.8.0-1015.17). I haven't managed to test the noble-proposed
kernel (6.8.0-1016.18) yet.
The issue doesn't occur with the oracular image (with kernel
6.11.0-1004.4).
I'll attach the output from the serial console from as far as it got.
[ Fix ]
Update Pi5/CM5 DTB.
[ Test Case ]
Boot CM5 from eMMC. Verify rebooting is working as well.
[ Where Problems Could Occur ]
DTB fixes are Pi5/CM5 specific, so only Pi5/CM5 might exhibit problems
introduced by this fix. Other Pis shouldn't be affected by this
change.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux-raspi/+bug/2089555/+subscriptions
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