VBT may include incorrect information about the presence of port F. Work around this on SKUs where we know the port is not present.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=108915 Cc: Mika Kahola <mika.kah...@intel.com> Cc: Jani Nikula <jani.nik...@linux.intel.com> Signed-off-by: Imre Deak <imre.d...@intel.com> --- drivers/gpu/drm/i915/i915_drv.h | 1 + drivers/gpu/drm/i915/intel_display.c | 4 +++- 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 815db160b966..13f94c4cc062 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2317,6 +2317,7 @@ intel_info(const struct drm_i915_private *dev_priv) (dev_priv)->info.gt == 3) #define IS_CNL_WITH_PORT_F(dev_priv) (IS_CANNONLAKE(dev_priv) && \ (INTEL_DEVID(dev_priv) & 0x0004) == 0x0004) +#define IS_ICL_WITH_PORT_F(dev_priv) (INTEL_DEVID(dev_priv) != 0x8A51) #define IS_ALPHA_SUPPORT(intel_info) ((intel_info)->is_alpha_support) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 2b81da068010..bd7fdaf7e093 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -14276,8 +14276,10 @@ static void intel_setup_outputs(struct drm_i915_private *dev_priv) /* * On some ICL SKUs port F is not present. No strap bits for * this, so rely on VBT. + * Work around broken VBTs on SKUs known to have no port F. */ - if (intel_bios_is_port_present(dev_priv, PORT_F)) + if (IS_ICL_WITH_PORT_F(dev_priv) && + intel_bios_is_port_present(dev_priv, PORT_F)) intel_ddi_init(dev_priv, PORT_F); icl_dsi_init(dev_priv); -- 2.13.2 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
