From 76e50ea054ae2369040494208a4099eee70cc5c3 Mon Sep 17 00:00:00 2001 From: Manasi Navare Date: Wed, 14 Jul 2021 15:34:14 -0700 Subject: [PATCH] drm/i915/display: Fix shared dpll mismatch for bigjoiner slave MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Cc: Ankit Nautiyal Tested-by: Swati Sharma Signed-off-by: Manasi Navare Reviewed-by: Ankit Nautiyal Link: https://patchwork.freedesktop.org/patch/msgid/20210714223414.9849-1-manasi.d.navare@intel.com --- drivers/gpu/drm/i915/display/intel_display.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 588b8ebe3020..834d285b6477 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -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, -- 2.50.1