EXTRALDFLAGS = -Wl,-L$(TMK_DIR),-Tldscript_keymap_avr35.x
else ifeq ($(strip $(MCU)),atmega32u4)
EXTRALDFLAGS = -Wl,-L$(TMK_DIR),-Tldscript_keymap_avr5.x
+ else ifeq ($(strip $(MCU)),at90usb1286)
+ EXTRALDFLAGS = -Wl,-L$(TMK_DIR),-Tldscript_keymap_avr51.x
else
EXTRALDFLAGS = $(error no ldscript for keymap section)
endif