Index: sys/arm/conf/RPI-B
===================================================================
--- sys/arm/conf/RPI-B
+++ sys/arm/conf/RPI-B
@@ -42,6 +42,7 @@
 device		loop
 device		ether
 device		uart
+device  	uart_mu 	# RPI3 aux port
 device		pty
 device		snp
 device		pl011
Index: sys/arm/conf/RPI2
===================================================================
--- sys/arm/conf/RPI2
+++ sys/arm/conf/RPI2
@@ -48,6 +48,7 @@
 device		loop
 device		ether
 device		uart
+device  	uart_mu  	# RPI3 aux port
 device		pty
 device		snp
 device		pl011
Index: sys/conf/files.arm
===================================================================
--- sys/conf/files.arm
+++ sys/conf/files.arm
@@ -140,6 +140,7 @@
 dev/syscons/scterm-teken.c	optional	sc
 dev/syscons/scvtb.c		optional	sc
 dev/uart/uart_cpu_fdt.c		optional	uart fdt
+dev/uart/uart_dev_mu.c		optional	uart uart_mu
 
 font.h				optional	sc			\
 	compile-with	"uudecode < /usr/share/syscons/fonts/${SC_DFLT_FONT}-8x16.fnt && file2c 'u_char dflt_font_16[16*256] = {' '};' < ${SC_DFLT_FONT}-8x16 > font.h && uudecode < /usr/share/syscons/fonts/${SC_DFLT_FONT}-8x14.fnt && file2c 'u_char dflt_font_14[14*256] = {' '};' < ${SC_DFLT_FONT}-8x14 >> font.h && uudecode < /usr/share/syscons/fonts/${SC_DFLT_FONT}-8x8.fnt && file2c 'u_char dflt_font_8[8*256] = {' '};' < ${SC_DFLT_FONT}-8x8 >> font.h" \