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drm/i915/display: Fix shared dpll mismatch for bigjoiner slave

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Currently when we do the HW state readout, we dont set the shared dpll to NULL
for the bigjoiner slave which should not have a DPLL assigned. So it has
some garbage while the HW state readout is NULL. So explicitly reset
the shared dpll for bigjoiner slave pipe.

Bug: https://gitlab.freedesktop.org/drm/intel/-/issues/3465
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Tested-by: Swati Sharma <swati2.sharma@intel.com>
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210714223414.9849-1-manasi.d.navare@intel.com
This commit is contained in:
Manasi Navare
2021-07-14 15:34:14 -07:00
parent 425057e725
commit 76e50ea054
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/i915/display/intel_display.c
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@@ -9003,6 +9003,10 @@ verify_crtc_state(struct intel_crtc *crtc,
if (!new_crtc_state->hw.active)
return;
if (new_crtc_state->bigjoiner_slave)
/* No PLLs set for slave */
pipe_config->shared_dpll = NULL;
intel_pipe_config_sanity_check(dev_priv, pipe_config);
if (!intel_pipe_config_compare(new_crtc_state,