--- /dev/null
+From e68d6696575e1af3f92125e842f2853708f34589 Mon Sep 17 00:00:00 2001
+From: Sathyanarayana Nujella <sathyanarayana.nujella@intel.com>
+Date: Fri, 20 Dec 2019 11:10:36 -0600
+Subject: ASoC: SOF: Intel: hda: Add iDisp4 DAI
+
+From: Sathyanarayana Nujella <sathyanarayana.nujella@intel.com>
+
+commit e68d6696575e1af3f92125e842f2853708f34589 upstream.
+
+TGL supports more than three iDisp DAI's.
+Add support for iDisp4 CPU DAI.
+
+Without this patch, we saw the below error on our TGL DUT:
+ sof_rt5682 tgl_max98357a_rt5682: ASoC: CPU DAI iDisp4 Pin not registered
+
+Signed-off-by: Sathyanarayana Nujella <sathyanarayana.nujella@intel.com>
+Signed-off-by: Jairaj Arava <jairaj.arava@intel.com>
+Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
+Link: https://lore.kernel.org/r/20191220171037.10689-2-pierre-louis.bossart@linux.intel.com
+Signed-off-by: Mark Brown <broonie@kernel.org>
+Cc: Hans de Goede <hdegoede@redhat.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ sound/soc/sof/intel/hda-dai.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/sound/soc/sof/intel/hda-dai.c
++++ b/sound/soc/sof/intel/hda-dai.c
+@@ -444,6 +444,10 @@ struct snd_soc_dai_driver skl_dai[] = {
+ .ops = &hda_link_dai_ops,
+ },
+ {
++ .name = "iDisp4 Pin",
++ .ops = &hda_link_dai_ops,
++},
++{
+ .name = "Analog CPU DAI",
+ .ops = &hda_link_dai_ops,
+ },