diff --git a/arch/tricore/src/common/tricore_internal.h b/arch/tricore/src/common/tricore_internal.h
index 21907a82d0..3485f7393d 100644
--- a/arch/tricore/src/common/tricore_internal.h
+++ b/arch/tricore/src/common/tricore_internal.h
@@ -190,8 +190,8 @@ extern uintptr_t        _lc_ge_data[]; /* End+1 of .data */
 #define _edata          _lc_ge_data
 #define _eheap          __USTACK0_END
 #else
-extern uintptr_t        __HEAP[]; /* End+1 of .data */
-extern uintptr_t        __A0_MEM[]; /* End+1 of .data */
+extern uintptr_t        __HEAP[];      /* End+1 of .data */
+extern uintptr_t        __A0_MEM[];    /* End+1 of .data */
 #define _sdata          LCF_DSPR0_START
 #define _edata          __A0_MEM
 #define _eheap          __USTACK0_END
@@ -250,7 +250,7 @@ void tricore_earlyserialinit(void);
 /* System Timer *************************************************************/
 
 struct oneshot_lowerhalf_s *
-tricore_systimer_initialize(void *tbase, int irq, uint64_t freq);
+tricore_systimer_initialize(volatile void *tbase, int irq, uint64_t freq);
 
 /* Debug ********************************************************************/
 
diff --git a/arch/tricore/src/common/tricore_systimer.c b/arch/tricore/src/common/tricore_systimer.c
index 5547a84f5e..5bda6b1654 100644
--- a/arch/tricore/src/common/tricore_systimer.c
+++ b/arch/tricore/src/common/tricore_systimer.c
@@ -44,7 +44,7 @@
 struct tricore_systimer_lowerhalf_s
 {
   struct oneshot_lowerhalf_s lower;
-  void                      *tbase;
+  volatile void              *tbase;
   uint64_t                   freq;
   uint64_t                   alarm;
   oneshot_callback_t         callback;
@@ -307,7 +307,7 @@ static int tricore_systimer_interrupt(int irq, void *context, void *arg)
  ****************************************************************************/
 
 struct oneshot_lowerhalf_s *
-tricore_systimer_initialize(void *tbase, int irq, uint64_t freq)
+tricore_systimer_initialize(volatile void *tbase, int irq, uint64_t freq)
 {
   struct tricore_systimer_lowerhalf_s *priv = &g_systimer_lower;
 
diff --git a/arch/tricore/src/common/tricore_trapcall.c b/arch/tricore/src/common/tricore_trapcall.c
index 88fa318543..ec7f21feb5 100644
--- a/arch/tricore/src/common/tricore_trapcall.c
+++ b/arch/tricore/src/common/tricore_trapcall.c
@@ -63,5 +63,5 @@ void tricore_trapcall(volatile void *trap)
   CURRENT_REGS = regs;
 
   up_irq_save();
-  PANIC_WITH_REGS("Trap", CURRENT_REGS);
+  PANIC_WITH_REGS("Trap", (void *)CURRENT_REGS);
 }
diff --git a/arch/tricore/src/tc3xx/tc3xx_serial.c b/arch/tricore/src/tc3xx/tc3xx_serial.c
index cf6e87bbfc..801255177a 100644
--- a/arch/tricore/src/tc3xx/tc3xx_serial.c
+++ b/arch/tricore/src/tc3xx/tc3xx_serial.c
@@ -100,10 +100,10 @@
 
 struct up_dev_s
 {
-  void      *uartbase; /* Base address of UART registers */
-  void      *pins;     /* Pin configuration */
-  uint32_t   baud;     /* Configured baud */
-  uint8_t    irq;      /* IRQ associated with this UART */
+  volatile void *uartbase; /* Base address of UART registers */
+  const void    *pins;     /* Pin configuration */
+  uint32_t       baud;     /* Configured baud */
+  uint8_t        irq;      /* IRQ associated with this UART */
 };
 
 /****************************************************************************