sun8i-dw-hdmi 5500000.hdmi: Couldn't get the HDMI PHY

[Heinrich Schuchardt]

I am testing the Mantic preinstalled image on the LicheeRV Dock. HDMI output is not working.

There is a kernel message "sun8i-dw-hdmi 5500000.hdmi: Couldn't get the HDMI PHY".

ProblemType: Bug
DistroRelease: Ubuntu 23.10
Package: linux-image-6.5.0-9-generic 6.5.0-9.9.1
ProcVersionSignature: Ubuntu 6.5.0-9.9.1-generic 6.5.3
Uname: Linux 6.5.0-9-generic riscv64
ApportVersion: 2.27.0-0ubuntu5
Architecture: riscv64
CasperMD5CheckResult: unknown
CloudArchitecture: riscv64
CloudBuildName: server
CloudID: nocloud
CloudName: unknown
CloudPlatform: nocloud
CloudSerial: 20231010
CloudSubPlatform: seed-dir (/var/lib/cloud/seed/nocloud-net)
Date: Tue Oct 10 14:42:06 2023
ProcEnviron:
 LANG=C.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 TERM=vt220
SourcePackage: linux-riscv
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Heinrich Schuchardt (xypron)]

With 6.8.0-31-generic I am not able to get any HDMI output on the LicheeRV Dock.
Unplugging and reconnecting did not help.

[ 0.133313] platform 5460000.tcon-top: Fixed dependency cycle(s) with /soc/hdmi@5500000
[ 0.141438] platform 5460000.tcon-top: Fixed dependency cycle(s) with /soc/hdmi@5500000
[ 0.141784] platform 5500000.hdmi: Fixed dependency cycle(s) with /soc/tcon-top@5460000
[ 0.151475] platform 5500000.hdmi: Fixed dependency cycle(s) with /connector
[ 0.151769] platform connector: Fixed dependency cycle(s) with /soc/hdmi@5500000
[ 63.119552] sun8i-dw-hdmi 5500000.hdmi: Couldn't get the HDMI PHY
[ 63.287954] sun8i-dw-hdmi 5500000.hdmi: Detected HDMI TX controller v2.12a with HDCP (sun8i_dw_hdmi_phy)
[ 63.298653] sun8i-dw-hdmi 5500000.hdmi: registered DesignWare HDMI I2C bus driver
[ 63.299605] sun4i-drm display-engine: bound 5500000.hdmi (ops sun8i_dw_hdmi_ops [sun8i_drm_hdmi])
[ 72.732580] rc rc0: dw_hdmi as /devices/platform/soc/5500000.hdmi/rc/rc0
[ 72.733035] input: dw_hdmi as /devices/platform/soc/5500000.hdmi/rc/rc0/input1

[Emil Renner Berthing (esmil)]

For all previous kernels and the 6.8.0-31-generic in Noble detection have been an issue. As long as the cable is attached at boot it does work.

[Heinrich Schuchardt (xypron)]

On my LicheeRV Dock it dos not work for me with HDMI plugged in at start. I just get

[ 67.521944] sun8i-dw-hdmi 5500000.hdmi: Couldn't get the HDMI PHY
[ 67.613930] sun4i-drm display-engine: Couldn't bind all pipelines components

and no output. On the Nezha D1 I did not have this issue.

When Alexandre wrote the tests it was explicitly foreseen to plug in HDMI after login. So this must have worked previously.