[Mediatek] mt8195-demo: please help to include these MediaTek drivers in initrd.img in CD/DVD release image

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 2038512

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

ubuntu kernel team does not handle which drivers do or do not get included in the initrd.

Since this is stuff that affects generic, these should be added by default for modules=most mode by initramfs-tools.

please contact ubuntu foundations team about this.

The setting of /etc/initramfs-tools/initramfs.conf was already set to 'MODULES=most'.

But it seems just not working for adding some of these drivers.
I was trying to configure these drivers on...

[Ubuntu Version]
Jammy

[initramfs-tools]
0.140ubuntu13.4

[Kernel version]
5.15 -> 6.2
(Generate initrd.img-6.2.0 on 5.15 kernel.)

Update:

It seems adding both files for the dependencies is required.
1. /etc/modprobe.d/mediatek.conf (module dependencies)
2. /etc/initramfs-tools/conf.d/driver-policy: 'MODULES=dep'

If only one file is added won't work.

update:
file: mediatek.conf (not optimized yet).

Update:

I've tested latest release image [1].

The ethernet is working. However due to the network environment in MediaTek, I could get IP address but just cannot get the correct DNS server. Hence I could not set $URL for packages during installation.

The USB hosts aren't working.
However, according to the debugging result on Suse.
I think these drivers [2][3] are still need for enabling USB hosts.
I've extract initrd from ubuntu-23.10-live-server-arm64.iso and trying to build a customized CD-image via this method [4]. But I've failed at the very last several steps to make a new CD-image with customized initrd.

[1] https://cdimage.ubuntu.com/ubuntu/releases/23.10/release/ubuntu-23.10-live-server-arm64.iso
[2] mt6360_charger, mtk-pmic-wrap, nvmem_mtk-efuse
[3] https://bugzilla.suse.com/show_bug.cgi?id=1215995
[4] https://help.ubuntu.com/community/LiveCDCustomization

Please help to include more drivers [2] in the next daily build release. Thanks.

I'm not sure if the repo https://github.com/snapcore/core-initrd/
is used for creating initrd for server or desktop's live-cd or installation CD image.
However, I've send a pull request.

If this is not the correct repo to send pull request, please help to correct me.
https://github.com/snapcore/core-initrd/pull/216

The initramfs-tools code can be found on https://code.launchpad.net/~ubuntu-core-dev/ubuntu/+source/initramfs-tools/+git/initramfs-tools

Can you test the proposed changes from https://code.launchpad.net/~bdrung/ubuntu/+source/initramfs-tools/+git/initramfs-tools/+ref/mediatek (patch with the changes from the three commits is attached)? Apply the changes to /usr/share/initramfs-tools/hook-functions and test if the boards boot correctly then.

Thanks for pointing the required resource in hook-function in initramfs-tools.
These seems helped. However I'm still check more required drivers.

+ modules="$modules =drivers/nvmem"
     modules="$modules =drivers/phy"
+ modules="$modules =drivers/power"
     modules="$modules =drivers/regulator"
     modules="$modules =drivers/reset"
     modules="$modules =drivers/spi"
+ modules="$modules =drivers/soc"

I think this is also required for "spmi-mtk-pmif"

+modules="$modules =drivers/spmi"

according to this https://bugzilla.suse.com/show_bug.cgi?id=1216767 fix.

linux-modules-extra-6.5.0-10-generic ships four System Power Management Interface (SPMI) modules on arm64:

drivers/spmi/hisi-spmi-controller.ko.zst
drivers/spmi/spmi-mtk-pmif.ko.zst
drivers/spmi/spmi-pmic-arb.ko.zst
drivers/spmi/spmi.ko.zst

See https://packages.ubuntu.com/mantic-updates/arm64/linux-modules-extra-6.5.0-10-generic/filelist

Including those should not consume too much space.

Forwarded adding System Power Management Interface (SPMI) modules to dracut: https://github.com/dracutdevs/dracut/pull/2557

This bug was fixed in the package initramfs-tools - 0.142ubuntu16

---------------
initramfs-tools (0.142ubuntu16) noble; urgency=medium

  * Install nvmem, soc, power, and System Power Management Interface (SPMI)
    kernel modules on ARM/RISC-V for MediaTek boards (LP: #2038512)
  * Install intel_lpss_pci and spi_pxa2xx_platform kernel modules for keyboard
    on MacBook Pro 2017 (LP: #2042710)
  * Install surface_aggregator_registry for keyboard on Surface Laptop 4
    (LP: #2007050)
  * framebuffer: Add privacy screen modules to the initrd (LP: #1954320)

 -- Benjamin Drung <email address hidden> Tue, 14 Nov 2023 19:34:42 +0100