ACK: [SRU][N:raspi][PATCH 0/7] mmc0 error on boot with eMMC CM5 (LP: #2089555)

[Manuel Diewald]

On Wed, Mar 19, 2025 at 10:58:24AM +0100, Juerg Haefliger wrote:
> BugLink: https://bugs.launchpad.net/bugs/2089555
> 
> [ 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.
> 
> 
> Jonathan Bell (3):
>   DTS: bcm2712: emmc2 clock frequency is 200MHz
>   DTS: bcm2712: defer SDIO1 CQE selection to the board dtb
>   dts: bcm2712: cm5: fix typo and declare HS400es support
> 
> Phil Elwell (3):
>   dts: bcm2712: cm5: There is no card detect signal
>   dts: bcm2712: cm5: Add antenna controls
>   dts: bcm2712: cm5: Force the ANT pins to GPIOs
> 
> Tim Gover (1):
>   dts: bcm2712: cm5: Disable HS400
> 
>  .../arm/boot/dts/broadcom/bcm2712-rpi-5-b.dts |  1 +
>  .../boot/dts/broadcom/bcm2712-rpi-cm5.dtsi    | 44 +++++++++++++++----
>  arch/arm/boot/dts/broadcom/bcm2712.dtsi       |  3 +-
>  arch/arm/boot/dts/overlays/README             | 10 +++--
>  4 files changed, 45 insertions(+), 13 deletions(-)
> 
> -- 
> 2.43.0
> 
> 
> -- 
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> kernel-team at lists.ubuntu.com
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Acked-by: Manuel Diewald <manuel.diewald at canonical.com>

-- 
 Manuel
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