diff -Naurp gcc/config/avr/avr-devices.c gcc/config/avr/avr-devices.c
--- gcc/config/avr/avr-devices.c	2011-06-20 12:23:54.000000000 +0530
+++ gcc/config/avr/avr-devices.c	2011-06-20 12:11:26.000000000 +0530
@@ -119,6 +119,7 @@ const struct mcu_type_s avr_mcu_types[] 
   { "atmega8",              ARCH_AVR4, "__AVR_ATmega8__",           0, 0x0060, "m8" },
   { "atmega48",             ARCH_AVR4, "__AVR_ATmega48__",          0, 0x0100, "m48" },
   { "atmega48a",            ARCH_AVR4, "__AVR_ATmega48A__",         0, 0x0100, "m48a" },
+  { "atmega48pa",           ARCH_AVR4, "__AVR_ATmega48PA__",        0, 0x0100, "m48pa" },
   { "atmega48p",            ARCH_AVR4, "__AVR_ATmega48P__",         0, 0x0100, "m48p" },
   { "atmega88",             ARCH_AVR4, "__AVR_ATmega88__",          0, 0x0100, "m88" },
   { "atmega88a",            ARCH_AVR4, "__AVR_ATmega88A__",         0, 0x0100, "m88a" },
diff -Naurp gcc/config/avr/t-avr gcc/config/avr/t-avr
--- gcc/config/avr/t-avr	2011-06-20 12:23:54.000000000 +0530
+++ gcc/config/avr/t-avr	2011-06-20 12:11:26.000000000 +0530
@@ -155,6 +155,7 @@ MULTILIB_MATCHES = \
 	mmcu?avr35=mmcu?attiny1634 \
 	mmcu?avr4=mmcu?atmega48 \
 	mmcu?avr4=mmcu?atmega48a \
+	mmcu?avr4=mmcu?atmega48pa \
 	mmcu?avr4=mmcu?atmega48p \
 	mmcu?avr4=mmcu?atmega8 \
 	mmcu?avr4=mmcu?atmega8515 \