diff --git a/src/mainboard/siemens/mc_rpl/variants/mc_rpl1/gpio.c b/src/mainboard/siemens/mc_rpl/variants/mc_rpl1/gpio.c
index 8b10b57040..ca79d04251 100644
--- a/src/mainboard/siemens/mc_rpl/variants/mc_rpl1/gpio.c
+++ b/src/mainboard/siemens/mc_rpl/variants/mc_rpl1/gpio.c
@@ -30,8 +30,6 @@ static const struct pad_config gpio_table[] = {
 	PAD_CFG_GPI(GPP_H1, NONE, PLTRST),
 	PAD_CFG_GPI(GPP_H2, NONE, PLTRST),
 	PAD_CFG_NF(GPP_H3, NONE, DEEP, NF1),
-	PAD_CFG_NF(GPP_H6, NONE, DEEP, NF1),	/* I2C1_SDA */
-	PAD_CFG_NF(GPP_H7, NONE, DEEP, NF1),	/* I2C1_SCL */
 	PAD_CFG_NF(GPP_H10, NONE, DEEP, NF2),	/* UART0_RXD */
 	PAD_CFG_NF(GPP_H11, NONE, DEEP, NF2),	/* UART0_TXD */
 	PAD_CFG_NF(GPP_H19, NONE, DEEP, NF1),	/* PCIE_XCLKREQ4 */
@@ -44,6 +42,8 @@ static const struct pad_config gpio_table[] = {
 	PAD_CFG_NF(GPP_D8, NONE, DEEP, NF1),	/* PCIE_XCLKREQ3 */
 	PAD_CFG_GPI(GPP_D10, NONE, PLTRST),
 	PAD_CFG_GPI(GPP_D12, NONE, PLTRST),
+	PAD_CFG_NF(GPP_D13, NONE, DEEP, NF3),	/* I2C6_SDA */
+	PAD_CFG_NF(GPP_D14, NONE, DEEP, NF3),	/* I2C6_SCL */
 	PAD_CFG_NF(GPP_D17, NONE, DEEP, NF1),	/* UART1_RXD */
 	PAD_CFG_NF(GPP_D18, NONE, DEEP, NF1),	/* UART1_TXD */
 
diff --git a/src/mainboard/siemens/mc_rpl/variants/mc_rpl1/overridetree.cb b/src/mainboard/siemens/mc_rpl/variants/mc_rpl1/overridetree.cb
index c57481fb41..4c2350b779 100644
--- a/src/mainboard/siemens/mc_rpl/variants/mc_rpl1/overridetree.cb
+++ b/src/mainboard/siemens/mc_rpl/variants/mc_rpl1/overridetree.cb
@@ -42,11 +42,12 @@ chip soc/intel/alderlake
 
 	register "serial_io_i2c_mode" = "{
 		[PchSerialIoIndexI2C0] = PchSerialIoPci,
-		[PchSerialIoIndexI2C1] = PchSerialIoPci,
+		[PchSerialIoIndexI2C1] = PchSerialIoDisabled,
 		[PchSerialIoIndexI2C2] = PchSerialIoDisabled,
 		[PchSerialIoIndexI2C3] = PchSerialIoDisabled,
 		[PchSerialIoIndexI2C4] = PchSerialIoDisabled,
 		[PchSerialIoIndexI2C5] = PchSerialIoDisabled,
+		[PchSerialIoIndexI2C6] = PchSerialIoPci,
 	}"
 
 	register "serial_io_uart_mode" = "{
@@ -60,7 +61,7 @@ chip soc/intel/alderlake
 		.i2c[0] = {
 			.speed = I2C_SPEED_FAST,
 		},
-		.i2c[1] = {
+		.i2c[6] = {
 			.speed = I2C_SPEED_FAST,
 		},
 	}"
@@ -119,7 +120,7 @@ chip soc/intel/alderlake
 			}"
 		end
 		device ref i2c0 on end
-		device ref i2c1 on end
+		device ref i2c6 on end
 		device ref xhci on
 			chip drivers/usb/acpi
 				register "desc" = ""Root Hub""