[Bug 110689] [CI][DRMTIP] igt at kms_* - dmesg-warn - WARN_ON(intel_wait_for_register(&dev_priv->uncore, regs->driver, (0x1 << ((pw_idx) * 2)), (0x1 << ((pw_idx) * 2)), 1))

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110689

Imre Deak <imre.deak at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #9 from Imre Deak <imre.deak at intel.com> ---
The VBT has been changed now and has:

<7>[    9.660348] [drm:intel_bios_init [i915]] Port C VBT info: CRT:0 DVI:0
HDMI:0 DP:1 eDP:0 LSPCON:0 USB-Type-C:0 TBT:0

so the port is marked as connected to a native Display Port connector. However
due to the missing RVP rework or the wrong setting in BIOS setup, the
corresponding PHY is still not ready for legacy mode:

<7>[    9.677087] [drm:icl_tc_phy_connect [i915]] Port C/TC#1: PHY not ready
<7>[    9.677147] [drm:intel_tc_port_sanitize [i915]] Port C/TC#1: sanitize
mode (tbt-alt)

However we can close this bug as the originally reported timeouts shouldn't
happen, as the driver will not use the port in legacy/DP-alt mode (which
originally caused the timeouts).

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