diff --git a/configs/skylake_ult b/configs/skylake_ult
index 8c386db..5e67484 100644
--- a/configs/skylake_ult
+++ b/configs/skylake_ult
@@ -1,4 +1,5 @@
 CONFIG_GFX_GMA_CPU		= Skylake
 CONFIG_GFX_GMA_CPU_VARIANT	= ULT
 CONFIG_GFX_GMA_INTERNAL_PORT	= DP
+CONFIG_GFX_GMA_ANALOG_I2C_PORT	= PCH_DAC
 CONFIG_GFX_GMA_DEFAULT_MMIO	= 16#e000_0000#