Bug 2393407

1. Please describe the problem:
In some Rockchip platform, due to missing DCPHY driver, Fedora is unable to output display through DSI

2. What is the Version-Release number of the kernel:
6.16.3-200

3. Did it work previously in Fedora? If so, what kernel version did the issue
   *first* appear?  Old kernels are available for download at
   https://koji.fedoraproject.org/koji/packageinfo?packageID=8 :

I guess it did not work on previous versions of fedora, because the driver is included in kernel 6.15-rc1 according to https://gitlab.collabora.com/hardware-enablement/rockchip-3588/notes-for-rockchip-3588/-/blob/main/mainline-status.md

4. Can you reproduce this issue? If so, please provide the steps to reproduce
   the issue below:

Try to boot Fedora on the following system

* Rockchip RK3588 board with DSI panel connected to any DSI port
* Devicetree has dsi* and mipidcphy* configured

Fedora should recognize display and start displaying something on DSI panel, but it won't and spit out the following kernel message:

deferred probe pending: dw-mipi-dsi2: failed to get mipi phy

5. Does this problem occur with the latest Rawhide kernel? To install the
   Rawhide kernel, run ``sudo dnf install fedora-repos-rawhide`` followed by
   ``sudo dnf update --enablerepo=rawhide kernel``:

I was unable to check rawhide kernel binary itself, but source code retrieved from Fedora Pagure has following in the kconfig.

# CONFIG_PHY_ROCKCHIP_SAMSUNG_DCPHY is not set

I guess it won't work on rawhide due to very same reason.

6. Are you running any modules that not shipped with directly Fedora's kernel?:

No.

7. Please attach the kernel logs. You can get the complete kernel log
   for a boot with ``journalctl --no-hostname -k > dmesg.txt``. If the
   issue occurred on a previous boot, use the journalctl ``-b`` flag.