diff --git a/src/mainboard/novacustom/mtl-h/ramstage.c b/src/mainboard/novacustom/mtl-h/ramstage.c
index 19d14a6e1a..637257a016 100644
--- a/src/mainboard/novacustom/mtl-h/ramstage.c
+++ b/src/mainboard/novacustom/mtl-h/ramstage.c
@@ -35,6 +35,15 @@ void mainboard_silicon_init_params(FSP_S_CONFIG *params)
 	params->PchEspiHostC10ReportEnable = 1;
 
 	// Pinmux configuration
+	params->PchSerialIoI2cSdaPinMux[3] = 0x1A45CA06; // GPP_H6
+	params->PchSerialIoI2cSclPinMux[3] = 0x1A45AA07; // GPP_H7
+
+	params->PchSerialIoI2cSdaPinMux[4] = 0x8A44CC0C; // GPP_E12
+	params->PchSerialIoI2cSclPinMux[4] = 0x8A44AC0D; // GPP_E13
+
+	params->PchSerialIoI2cSdaPinMux[5] = 0x8A46CE0D; // GPP_F13
+	params->PchSerialIoI2cSclPinMux[5] = 0x8A46AE0C; // GPP_F12
+
 	params->CnviRfResetPinMux = 0x194CE404; // GPP_F04
 	params->CnviClkreqPinMux = 0x394CE605;  // GPP_F05