diff --git a/soc/xtensa/intel_s1000/soc.c b/soc/xtensa/intel_s1000/soc.c
index c2dd7c16f93..f852e6d4d47 100644
--- a/soc/xtensa/intel_s1000/soc.c
+++ b/soc/xtensa/intel_s1000/soc.c
@@ -147,24 +147,6 @@ void _soc_irq_disable(u32_t irq)
 	}
 }
 
-void soc_config_iomux_ctsrts(void)
-{
-	volatile struct soc_io_mux_regs *regs =
-		(volatile struct soc_io_mux_regs *)IOMUX_BASE;
-
-	/* Configure the MUX to select GPIO functionality for GPIO 23 and 24 */
-	regs->io_mux_ctl0 |= SOC_UART_RTS_CTS_MS;
-}
-
-void soc_config_iomux_i2c(void)
-{
-	volatile struct soc_io_mux_regs *regs =
-		(volatile struct soc_io_mux_regs *)IOMUX_BASE;
-
-	/* Configure the MUX to select the correct I2C port (I2C1) */
-	regs->io_mux_ctl2 |= SOC_I2C_I0_I1_MS;
-}
-
 static inline void soc_set_resource_ownership(void)
 {
 	volatile struct soc_resource_alloc_regs *regs =
@@ -244,14 +226,6 @@ static int soc_init(struct device *dev)
 	soc_set_resource_ownership();
 	soc_set_power_and_clock();
 
-#ifdef CONFIG_I2C
-	soc_config_iomux_i2c();
-#endif
-
-#ifdef CONFIG_GPIO
-	soc_config_iomux_ctsrts();
-#endif
-
 	return 0;
 }
 
diff --git a/soc/xtensa/intel_s1000/soc.h b/soc/xtensa/intel_s1000/soc.h
index e92d7404326..c04453eb8a5 100644
--- a/soc/xtensa/intel_s1000/soc.h
+++ b/soc/xtensa/intel_s1000/soc.h
@@ -92,17 +92,6 @@
 #define SOC_NUM_LPGPDMAC			3
 #define SOC_NUM_CHANNELS_IN_DMAC		8
 
-#define IOMUX_BASE				0x00081C00
-#define SOC_I2C_I0_I1_MS			BIT(0)
-#define SOC_UART_RTS_CTS_MS			BIT(16)
-
-struct soc_io_mux_regs {
-	u32_t	reserved[12];
-	u32_t	io_mux_ctl0;
-	u32_t	io_mux_ctl1;
-	u32_t	io_mux_ctl2;
-};
-
 /* SOC Resource Allocation Registers */
 #define SOC_RESOURCE_ALLOC_REG_BASE		0x00071A60
 /* bit field definition for LP GPDMA ownership register */