diff --git gcc/common/config/avr/avr-common.c gcc/common/config/avr/avr-common.c
index 0ede117..b2b8359 100644
--- gcc/common/config/avr/avr-common.c
+++ gcc/common/config/avr/avr-common.c
@@ -32,10 +32,39 @@ static const struct default_options avr_option_optimization_table[] =
     { OPT_LEVELS_NONE, 0, NULL, 0 }
   };
 
+static bool
+avr_handle_target_option (struct gcc_options *opts,
+        struct gcc_options *opts_set, const struct cl_decoded_option *decoded,
+        location_t loc)
+{
+  if (avr_list_supported_parts)
+    {
+      const struct mcu_type_s *list_part;
+
+      fprintf (stdout, "List of parts supported by avr-gcc:\n");
+
+      for (list_part = &avr_mcu_types[0]; list_part->name; list_part++)
+        {
+          if (!list_part->macro)
+            list_part++;
+          fprintf (stdout, "%-20s%s\n", list_part->name, list_part->macro);
+        }
+
+      fprintf (stdout, "\n");
+
+    }
+
+  return true;
+}
+
+
 #undef TARGET_OPTION_OPTIMIZATION_TABLE
 #define TARGET_OPTION_OPTIMIZATION_TABLE avr_option_optimization_table
 
 #undef TARGET_EXCEPT_UNWIND_INFO
 #define TARGET_EXCEPT_UNWIND_INFO sjlj_except_unwind_info
 
+#undef TARGET_HANDLE_OPTION
+#define TARGET_HANDLE_OPTION avr_handle_target_option
+
 struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER;
diff --git gcc/config/avr/avr.opt gcc/config/avr/avr.opt
index 0ad38c6..3649c5b 100644
--- gcc/config/avr/avr.opt
+++ gcc/config/avr/avr.opt
@@ -66,6 +66,10 @@ mpmem-wrap-around
 Target Report
 Make the linker relaxation machine assume that a program counter wrap-around occurs.
 
+mlist-devices
+Target RejectNegative Var(avr_list_supported_parts)
+Print the list of parts supported while printing --target-help
+
 maccumulate-args
 Target Report Mask(ACCUMULATE_OUTGOING_ARGS)
 Accumulate outgoing function arguments and acquire/release the needed stack space for outpoing function arguments in function prologue/epilogue.  Without this option, outgoing arguments are pushed before calling a function and popped afterwards.  This option can lead to reduced code size for functions that call many functions that get their arguments on the stack like, for example printf.