From: Lyude Paul <lyude@xxxxxxxxxx> drm/i915/tgl/psr: Disable PSR on Tigerlake for now Currently PSR2 appears to be broken on TGL which causes some pretty nasty refresh issues. Intel doesn't have a fix for this quite yet, and this definitely affects a couple of OEM machines shipping with Fedora. We don't have a better workaround for the time being, so just disable PSR2 outright for Tigerlake by default until this gets fixed. Signed-off-by: Lyude Paul <lyude@xxxxxxxxxx> Cc: Jared Dominguez <jaredz@xxxxxxxxxx> Cc: Mark Pearson <markpearson@xxxxxxxxxx> Bugzilla: https://gitlab.freedesktop.org/drm/intel/-/issues/3134 diff a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c --- a/drivers/gpu/drm/i915/display/intel_psr.c +++ b/drivers/gpu/drm/i915/display/intel_psr.c @@ -1817,9 +1817,14 @@ void intel_psr_init(struct drm_i915_private *dev_priv) */ dev_priv->hsw_psr_mmio_adjust = _SRD_CTL_EDP - _HSW_EDP_PSR_BASE; - if (dev_priv->params.enable_psr == -1) - if (INTEL_GEN(dev_priv) < 9 || !dev_priv->vbt.psr.enable) + if (dev_priv->params.enable_psr == -1) { + if (INTEL_GEN(dev_priv) < 9 || !dev_priv->vbt.psr.enable) { dev_priv->params.enable_psr = 0; + } else if (INTEL_GEN(dev_priv) == 12) { + /* See https://gitlab.freedesktop.org/drm/intel/-/issues/3134 */ + dev_priv->params.enable_psr = 0; + } + } /* Set link_standby x link_off defaults */ if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) -- https://gitlab.com/cki-project/kernel-ark/-/merge_requests/981 _______________________________________________ kernel mailing list -- kernel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to kernel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/kernel@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
