diff --git a/bsp/renesas/ra8m1-ek/.config b/bsp/renesas/ra8m1-ek/.config
index 26e4067eaf..379d6d2fc7 100644
--- a/bsp/renesas/ra8m1-ek/.config
+++ b/bsp/renesas/ra8m1-ek/.config
@@ -9,6 +9,7 @@
 CONFIG_RT_NAME_MAX=8
 # CONFIG_RT_USING_ARCH_DATA_TYPE is not set
 # CONFIG_RT_USING_SMART is not set
+# CONFIG_RT_USING_NANO is not set
 # CONFIG_RT_USING_AMP is not set
 # CONFIG_RT_USING_SMP is not set
 CONFIG_RT_CPUS_NR=1
@@ -211,6 +212,12 @@ CONFIG_RT_LIBC_TZ_DEFAULT_SEC=0
 # CONFIG_RT_USING_LWIP is not set
 # CONFIG_RT_USING_AT is not set
 
+#
+# Memory protection
+#
+# CONFIG_RT_USING_MEM_PROTECTION is not set
+# CONFIG_RT_USING_HW_STACK_GUARD is not set
+
 #
 # Utilities
 #
@@ -223,17 +230,6 @@ CONFIG_RT_LIBC_TZ_DEFAULT_SEC=0
 # CONFIG_RT_USING_RT_LINK is not set
 # CONFIG_RT_USING_VBUS is not set
 
-#
-# Memory management
-#
-# CONFIG_RT_USING_MEMBLOCK is not set
-
-#
-# Memory protection
-#
-# CONFIG_RT_USING_MEM_PROTECTION is not set
-# CONFIG_RT_USING_HW_STACK_GUARD is not set
-
 #
 # RT-Thread Utestcases
 #
diff --git a/bsp/renesas/ra8m1-ek/board/Kconfig b/bsp/renesas/ra8m1-ek/board/Kconfig
index 2a7b636187..af5784d1f5 100644
--- a/bsp/renesas/ra8m1-ek/board/Kconfig
+++ b/bsp/renesas/ra8m1-ek/board/Kconfig
@@ -445,7 +445,7 @@ menu "Hardware Drivers Config"
                     default n
             endif
 
-        menuconfig BSP_USING_I2C
+       menuconfig BSP_USING_I2C
             bool "Enable I2C BUS"
             default n
             select RT_USING_I2C
@@ -460,6 +460,21 @@ menu "Hardware Drivers Config"
                         bool "Enable Hardware I2C1 BUS"
                         default n
                 endif
+            if !BSP_USING_HW_I2C
+                    menuconfig BSP_USING_I2C1
+                        bool "Enable I2C1 BUS (software simulation)"
+                        default y
+                        if BSP_USING_I2C1
+                            config BSP_I2C1_SCL_PIN
+                                hex "i2c1 scl pin number"
+                                range 0x0000 0x0B0F
+                                default 0x050C
+                            config BSP_I2C1_SDA_PIN
+                                hex "I2C1 sda pin number"
+                                range 0x0000 0x0B0F
+                                default 0x050B
+                    endif
+                endif
             endif
 
         menuconfig BSP_USING_ADC
diff --git a/bsp/renesas/ra8m1-ek/rtconfig.h b/bsp/renesas/ra8m1-ek/rtconfig.h
index 7d04619e10..b231ec96d6 100644
--- a/bsp/renesas/ra8m1-ek/rtconfig.h
+++ b/bsp/renesas/ra8m1-ek/rtconfig.h
@@ -112,15 +112,12 @@
 /* Network */
 
 
-/* Utilities */
-
-
-/* Memory management */
-
-
 /* Memory protection */
 
 
+/* Utilities */
+
+
 /* RT-Thread Utestcases */