diff --git a/examples/platform/silabs/efr32/rs911x/hal/efx32_ncp_host.c b/examples/platform/silabs/efr32/rs911x/hal/efx32_ncp_host.c
index b48d72cdc00aee..09634f1fc35d19 100644
--- a/examples/platform/silabs/efr32/rs911x/hal/efx32_ncp_host.c
+++ b/examples/platform/silabs/efr32/rs911x/hal/efx32_ncp_host.c
@@ -110,8 +110,11 @@ static void efx32_spi_init(void)
 
     // Enable USART interface pins
     GPIO->USARTROUTE[SPI_USART_ROUTE_INDEX].ROUTEEN = GPIO_USART_ROUTEEN_RXPEN | // MISO
-        GPIO_USART_ROUTEEN_TXPEN |                                               // MOSI
-        GPIO_USART_ROUTEEN_CLKPEN;
+        GPIO_USART_ROUTEEN_TXPEN |                                              // MOSI
+#if !SL_SPICTRL_MUX
+        GPIO_USART_ROUTEEN_CSPEN |
+#endif
+    GPIO_USART_ROUTEEN_CLKPEN;
 
     // Set slew rate for alternate usage pins
     GPIO_SlewrateSet(SPI_CLOCK_PIN.port, 7, 7);
diff --git a/examples/platform/silabs/efr32/rs911x/hal/sl_si91x_ncp_utility.c b/examples/platform/silabs/efr32/rs911x/hal/sl_si91x_ncp_utility.c
index 14e47f43f99f5d..b6ab0b6b81f091 100644
--- a/examples/platform/silabs/efr32/rs911x/hal/sl_si91x_ncp_utility.c
+++ b/examples/platform/silabs/efr32/rs911x/hal/sl_si91x_ncp_utility.c
@@ -87,10 +87,7 @@ sl_status_t sl_wfx_host_pre_lcd_spi_transfer(void)
     if (SL_STATUS_OK == status)
     {
         SPIDRV_SetBaudrate(SL_SPIDRV_LCD_BITRATE);
-    }
-#if SL_SPICTRL_MUX
-    xSemaphoreGive(spi_sem_sync_hdl);
-#endif // SL_SPICTRL_MUX
+    } 
     return status;
 }