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commit879f70382fupstream. The format of the port width field in the DDI_BUF_CTL and the TRANS_DDI_FUNC_CTL registers are different starting with MTL, where the x3 lane mode for HDMI FRL has a different encoding in the two registers. To account for this use the TRANS_DDI_FUNC_CTL's own port width macro. Cc: <stable@vger.kernel.org> # v6.5+ Fixes:b66a8abaa4("drm/i915/display/mtl: Fill port width in DDI_BUF_/TRANS_DDI_FUNC_/PORT_BUF_CTL for HDMI") Reviewed-by: Jani Nikula <jani.nikula@intel.com> Signed-off-by: Imre Deak <imre.deak@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20250214142001.552916-2-imre.deak@intel.com (cherry picked from commit76120b3a30) Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com> [Imre: Rebased on v6.6.y, due to upstream API changes for intel_de_read(), TRANS_DDI_FUNC_CTL()] Signed-off-by: Imre Deak <imre.deak@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>