[Bug 111996] [CI][RESUME] Igt@* dmesg-fail/dmesg-warn/incomplete - WARN_ON(!power_well->desc->hsw.is_tc_tbt)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111996

--- Comment #10 from Swati Sharma <swati2.sharma at intel.com> ---
(In reply to Ville Syrjala from comment #6)
> Someone should test this:
> --- a/drivers/gpu/drm/i915/display/intel_display_power.c
> +++ b/drivers/gpu/drm/i915/display/intel_display_power.c
> @@ -423,10 +423,8 @@ icl_combo_phy_aux_power_well_enable(struct
> drm_i915_private *dev_priv,
>         val = I915_READ(regs->driver);
>         I915_WRITE(regs->driver, val | HSW_PWR_WELL_CTL_REQ(pw_idx));
>  
> -       if (INTEL_GEN(dev_priv) < 12) {
>                 val = I915_READ(ICL_PORT_CL_DW12(phy));
>                 I915_WRITE(ICL_PORT_CL_DW12(phy), val | ICL_LANE_ENABLE_AUX);
> -       }
>  
>         hsw_wait_for_power_well_enable(dev_priv, power_well);
>  
> Another observation I made was that the 1178 anaovrd w/a is no longer listed
> for tgl, so should be nuked. Although it shouldn't matter for this
> particular bug.

Hi Ville,
I tested with above change. Attaching @dmesg_logs and @display_info
In dmesg we can see that
[    1.902424] [drm:drm_calc_timestamping_constants] *ERROR* crtc 91: Can't
calculate constants, dotclock = 0!
Kernel booted but display didn't come up.

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