diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 223a236c3d..250384c020 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -94,28 +94,28 @@ config XTENSA_CP_INITSET
 		is provided by CONFIG_XTENSA_CP_INITSET.  Each bit corresponds to one
 		coprocessor with the same bit layout as for the CPENABLE register.
 
-config XTENSA_USE_SEPERATE_IMEM
-	bool "Use a seperate heap for internal memory"
+config XTENSA_USE_SEPARATE_IMEM
+	bool "Use a separate heap for internal memory"
 	default n
 	help
-		This is a seperate internal heap that's used by drivers when certain operations
+		This is a separate internal heap that's used by drivers when certain operations
 		are not possible with the provided buffer(s).
 		Mainly, when the provided buffer comes from external RAM and a DMA or flash 
 		operation is going to be performed.
 
-		This seperate heap will be part of the internal DRAM.  It starts right after .data
+		This separate heap will be part of the internal DRAM.  It starts right after .data
 		and ends at the configurable size given by the OPTION XTENSA_IMEM_REGION_SIZE.
 
 config XTENSA_IMEM_REGION_SIZE
 	hex "DRAM region size for internal use"
-	depends on XTENSA_USE_SEPERATE_IMEM
+	depends on XTENSA_USE_SEPARATE_IMEM
 	range 0x2000 0x28000
 	default 0x28000
 
 config XTENSA_IMEM_PROCFS
 	bool "Internal memory PROCFS support"
 	default n
-	depends on XTENSA_USE_SEPERATE_IMEM && !DISABLE_MOUNTPOINT && FS_PROCFS && FS_PROCFS_REGISTER
+	depends on XTENSA_USE_SEPARATE_IMEM && !DISABLE_MOUNTPOINT && FS_PROCFS && FS_PROCFS_REGISTER
 
 source arch/xtensa/src/lx6/Kconfig
 if ARCH_CHIP_ESP32
diff --git a/arch/xtensa/include/arch.h b/arch/xtensa/include/arch.h
index 919f4dad5e..b3a66c3869 100644
--- a/arch/xtensa/include/arch.h
+++ b/arch/xtensa/include/arch.h
@@ -91,16 +91,15 @@ extern "C"
 #define EXTERN extern
 #endif
 
-#ifdef CONFIG_XTENSA_USE_SEPERATE_IMEM
-
+#ifdef CONFIG_XTENSA_USE_SEPARATE_IMEM
 struct mallinfo; /* Forward reference, see malloc.h */
 
-void      up_imm_initialize(void);
-FAR void *up_imm_malloc(size_t size);
-void      up_imm_free(FAR void *mem);
-FAR void *up_imm_memalign(size_t alignment, size_t size);
-bool up_imm_heapmember(FAR void *mem);
-int up_imm_mallinfo(FAR struct mallinfo *info);
+void      xtensa_imm_initialize(void);
+FAR void *xtensa_imm_malloc(size_t size);
+void      xtensa_imm_free(FAR void *mem);
+FAR void *xtensa_imm_memalign(size_t alignment, size_t size);
+bool      xtensa_imm_heapmember(FAR void *mem);
+int       xtensa_imm_mallinfo(FAR struct mallinfo *info);
 #endif
 
 #undef EXTERN
diff --git a/arch/xtensa/src/common/xtensa_initialize.c b/arch/xtensa/src/common/xtensa_initialize.c
index be7ecf1d6d..aba916426c 100644
--- a/arch/xtensa/src/common/xtensa_initialize.c
+++ b/arch/xtensa/src/common/xtensa_initialize.c
@@ -111,7 +111,7 @@ void up_initialize(void)
   /* Initialize the internal heap */
 
 #ifdef CONFIG_XTENSA_USE_SEPERATE_IMEM
-  up_imm_initialize();
+  xtensa_imm_initialize();
 #endif
 
 #ifdef CONFIG_ARCH_DMA
diff --git a/arch/xtensa/src/common/xtensa_mm.h b/arch/xtensa/src/common/xtensa_mm.h
index a95faf5fe6..81a60cbc78 100644
--- a/arch/xtensa/src/common/xtensa_mm.h
+++ b/arch/xtensa/src/common/xtensa_mm.h
@@ -35,10 +35,10 @@
  ****************************************************************************/
 
 #ifdef CONFIG_XTENSA_USE_SEPERATE_IMEM
-#  define UMM_MALLOC(s)      up_imm_malloc(s)
-#  define UMM_MEMALIGN(a,s)  up_imm_memalign(a,s)
-#  define UMM_FREE(p)        up_imm_free(p)
-#  define UMM_HEAPMEMEBER(p) up_imm_heapmember(p)
+#  define UMM_MALLOC(s)      xtensa_imm_malloc(s)
+#  define UMM_MEMALIGN(a,s)  xtensa_imm_memalign(a,s)
+#  define UMM_FREE(p)        xtensa_imm_free(p)
+#  define UMM_HEAPMEMEBER(p) xtensa_imm_heapmember(p)
 #else
 #  define UMM_MALLOC(s)      kumm_malloc(s)
 #  define UMM_MEMALIGN(a,s)  kumm_memalign(a,s)
diff --git a/arch/xtensa/src/esp32/esp32_allocateheap.c b/arch/xtensa/src/esp32/esp32_allocateheap.c
index d81eaa1ca0..098a31c867 100644
--- a/arch/xtensa/src/esp32/esp32_allocateheap.c
+++ b/arch/xtensa/src/esp32/esp32_allocateheap.c
@@ -75,7 +75,7 @@
 void up_allocate_heap(FAR void **heap_start, size_t *heap_size)
 {
   board_autoled_on(LED_HEAPALLOCATE);
-#ifdef CONFIG_XTENSA_USE_SEPERATE_IMEM
+#ifdef CONFIG_XTENSA_USE_SEPARATE_IMEM
   *heap_start = (FAR void *)&_sheap + CONFIG_XTENSA_IMEM_REGION_SIZE;
   *heap_size = (size_t)((uintptr_t)&_eheap - (uintptr_t)*heap_start);
 #else
diff --git a/arch/xtensa/src/esp32/esp32_imm.c b/arch/xtensa/src/esp32/esp32_imm.c
index 24077f64ec..163f88e90c 100644
--- a/arch/xtensa/src/esp32/esp32_imm.c
+++ b/arch/xtensa/src/esp32/esp32_imm.c
@@ -30,7 +30,7 @@
 
 #include "xtensa.h"
 
-#if CONFIG_XTENSA_USE_SEPERATE_IMEM
+#if CONFIG_XTENSA_USE_SEPARATE_IMEM
 
 /****************************************************************************
  * Private Data
@@ -43,14 +43,14 @@ struct mm_heap_s g_iheap;
  ****************************************************************************/
 
 /****************************************************************************
- * Name: up_imm_initialize
+ * Name: xtensa_imm_initialize
  *
  * Description:
  *   Initialize the internal heap.
  *
  ****************************************************************************/
 
-void up_imm_initialize(void)
+void xtensa_imm_initialize(void)
 {
   void  *start;
   size_t size;
@@ -61,33 +61,33 @@ void up_imm_initialize(void)
 }
 
 /****************************************************************************
- * Name: up_imm_malloc
+ * Name: xtensa_imm_malloc
  *
  * Description:
  *   Allocate memory from the internal heap.
  *
  ****************************************************************************/
 
-FAR void *up_imm_malloc(size_t size)
+FAR void *xtensa_imm_malloc(size_t size)
 {
   return mm_malloc(&g_iheap, size);
 }
 
 /****************************************************************************
- * Name: up_imm_free
+ * Name: xtensa_imm_free
  *
  * Description:
  *   Free memory from the internal heap.
  *
  ****************************************************************************/
 
-void up_imm_free(FAR void *mem)
+void xtensa_imm_free(FAR void *mem)
 {
   mm_free(&g_iheap, mem);
 }
 
 /****************************************************************************
- * Name: up_imm_memalign
+ * Name: xtensa_imm_memalign
  *
  * Description:
  *   memalign requests more than enough space from malloc, finds a region
@@ -99,13 +99,13 @@ void up_imm_free(FAR void *mem)
  *
  ****************************************************************************/
 
-FAR void *up_imm_memalign(size_t alignment, size_t size)
+FAR void *xtensa_imm_memalign(size_t alignment, size_t size)
 {
   return mm_memalign(&g_iheap, alignment, size);
 }
 
 /****************************************************************************
- * Name: up_imm_heapmember
+ * Name: xtensa_imm_heapmember
  *
  * Description:
  *   Check if an address lies in the internal heap.
@@ -118,13 +118,13 @@ FAR void *up_imm_memalign(size_t alignment, size_t size)
  *
  ****************************************************************************/
 
-bool up_imm_heapmember(FAR void *mem)
+bool xtensa_imm_heapmember(FAR void *mem)
 {
   return mm_heapmember(&g_iheap, mem);
 }
 
 /****************************************************************************
- * Name: up_imm_mallinfo
+ * Name: xtensa_imm_mallinfo
  *
  * Description:
  *   mallinfo returns a copy of updated current heap information for the
@@ -132,9 +132,9 @@ bool up_imm_heapmember(FAR void *mem)
  *
  ****************************************************************************/
 
-int up_imm_mallinfo(FAR struct mallinfo *info)
+int xtensa_imm_mallinfo(FAR struct mallinfo *info)
 {
   return mm_mallinfo(&g_iheap, info);
 }
 
-#endif /* CONFIG_XTENSA_USE_SEPERATE_IMEM */
+#endif /* CONFIG_XTENSA_USE_SEPARATE_IMEM */
diff --git a/arch/xtensa/src/esp32/esp32_procfs_imm.c b/arch/xtensa/src/esp32/esp32_procfs_imm.c
index 65e6183fdb..3983af6dc8 100644
--- a/arch/xtensa/src/esp32/esp32_procfs_imm.c
+++ b/arch/xtensa/src/esp32/esp32_procfs_imm.c
@@ -205,7 +205,7 @@ static ssize_t imm_read(FAR struct file *filep, FAR char *buffer,
   priv = (FAR struct imm_file_s *)filep->f_priv;
   DEBUGASSERT(priv);
 
-  up_imm_mallinfo(&mem);
+  xtensa_imm_mallinfo(&mem);
 
   remaining = buflen;
   totalsize = 0;
diff --git a/arch/xtensa/src/esp32/esp32_spi.c b/arch/xtensa/src/esp32/esp32_spi.c
index facc2e202d..9de633c10b 100644
--- a/arch/xtensa/src/esp32/esp32_spi.c
+++ b/arch/xtensa/src/esp32/esp32_spi.c
@@ -880,7 +880,7 @@ static void esp32_spi_dma_exchange(FAR struct esp32_spi_priv_s *priv,
 #ifdef CONFIG_XTENSA_USE_SEPERATE_IMEM
   if (esp32_ptr_extram(txbuffer))
     {
-      alloctp = up_imm_malloc(bytes);
+      alloctp = xtensa_imm_malloc(bytes);
       DEBUGASSERT(alloctp != NULL);
       memcpy(alloctp, txbuffer, bytes);
       tp = alloctp;
@@ -894,7 +894,7 @@ static void esp32_spi_dma_exchange(FAR struct esp32_spi_priv_s *priv,
 #ifdef CONFIG_XTENSA_USE_SEPERATE_IMEM
   if (esp32_ptr_extram(rxbuffer))
     {
-      allocrp = up_imm_malloc(bytes);
+      allocrp = xtensa_imm_malloc(bytes);
       DEBUGASSERT(allocrp != NULL);
       rp = allocrp;
     }
@@ -967,14 +967,14 @@ static void esp32_spi_dma_exchange(FAR struct esp32_spi_priv_s *priv,
   if (esp32_ptr_extram(rxbuffer))
     {
       memcpy(rxbuffer, allocrp, bytes);
-      up_imm_free(allocrp);
+      xtensa_imm_free(allocrp);
     }
 #endif
 
 #ifdef CONFIG_XTENSA_USE_SEPERATE_IMEM
   if (esp32_ptr_extram(txbuffer))
     {
-      up_imm_free(alloctp);
+      xtensa_imm_free(alloctp);
     }
 #endif
 }
diff --git a/arch/xtensa/src/esp32/esp32_spiflash.c b/arch/xtensa/src/esp32/esp32_spiflash.c
index be43d05b65..8ee3cd4b8d 100644
--- a/arch/xtensa/src/esp32/esp32_spiflash.c
+++ b/arch/xtensa/src/esp32/esp32_spiflash.c
@@ -1054,7 +1054,7 @@ static ssize_t esp32_read(FAR struct mtd_dev_s *dev, off_t offset,
 #ifdef CONFIG_XTENSA_USE_SEPERATE_IMEM
   if (esp32_ptr_extram(buffer))
     {
-      tmpbuff = up_imm_malloc(nbytes);
+      tmpbuff = xtensa_imm_malloc(nbytes);
       if (tmpbuff == NULL)
         {
           return (ssize_t)-ENOMEM;
@@ -1089,7 +1089,7 @@ error_with_buffer:
   if (esp32_ptr_extram(buffer))
     {
       memcpy(buffer, tmpbuff, (ret == OK) ? nbytes : 0);
-      up_imm_free(tmpbuff);
+      xtensa_imm_free(tmpbuff);
     }
 #endif
 
@@ -1173,7 +1173,7 @@ static ssize_t esp32_write(FAR struct mtd_dev_s *dev, off_t offset,
 #ifdef CONFIG_XTENSA_USE_SEPERATE_IMEM
   if (esp32_ptr_extram(buffer))
     {
-      tmpbuff = up_imm_malloc(nbytes);
+      tmpbuff = xtensa_imm_malloc(nbytes);
       if (tmpbuff == NULL)
         {
           return (ssize_t)-ENOMEM;
@@ -1213,7 +1213,7 @@ error_with_buffer:
 #ifdef CONFIG_XTENSA_USE_SEPERATE_IMEM
   if (esp32_ptr_extram(buffer))
     {
-      up_imm_free(tmpbuff);
+      xtensa_imm_free(tmpbuff);
     }
 #endif
 
diff --git a/boards/xtensa/esp32/esp32-core/configs/spiflash/defconfig b/boards/xtensa/esp32/esp32-core/configs/spiflash/defconfig
index c603aeb049..a93ff5c55d 100644
--- a/boards/xtensa/esp32/esp32-core/configs/spiflash/defconfig
+++ b/boards/xtensa/esp32/esp32-core/configs/spiflash/defconfig
@@ -48,4 +48,3 @@ CONFIG_START_YEAR=2011
 CONFIG_SYSTEM_NSH=y
 CONFIG_UART0_SERIAL_CONSOLE=y
 CONFIG_USER_ENTRYPOINT="nsh_main"
-CONFIG_XTENSA_USE_SEPERATE_IMEM=y