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Create a config.txt for RPI and set 'enable_uart=1' and 'force_turbo=0'. 

This config gives us a stable core_freq clock that is used to drive the
SD HOST and AUX UART devices.

More information on config.txt settings for the UART can be found here:

https://www.raspberrypi.org/documentation/configuration/uart.md
This commit is contained in:
jmcneill 2017-07-31 16:34:22 +00:00
parent e1db7ada44
commit 337b37be2b
3 changed files with 23 additions and 3 deletions
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8
distrib/utils/embedded/conf/armv7.conf
View File

@ -1,4 +1,4 @@
# $NetBSD: armv7.conf,v 1.15 2017/07/09 10:41:40 jmcneill Exp $
# $NetBSD: armv7.conf,v 1.16 2017/07/31 16:34:22 jmcneill Exp $
# ARMv7 customization script used by mkimage
#
board=armv7
@ -63,6 +63,12 @@ populate_rpi() {
root=ld0a console=${console}
#fb=1280x1024 # to select a mode, otherwise try EDID
#fb=disable # to disable fb completely
EOF
cat > ${mnt}/boot/config.txt << EOF
# UART settings, see https://www.raspberrypi.org/documentation/configuration/uart.md
enable_uart=1
force_turbo=0
EOF
echo "${bar} installing firmware files ${bar}"

9
distrib/utils/embedded/conf/rpi.conf
View File

@ -1,4 +1,4 @@
# $NetBSD: rpi.conf,v 1.29 2015/04/19 18:28:31 hubertf Exp $
# $NetBSD: rpi.conf,v 1.30 2017/07/31 16:34:22 jmcneill Exp $
# Raspberry Pi customization script used by mkimage
#
@ -52,6 +52,13 @@ root=ld0a console=fb
#fb=1280x1024 # to select a mode, otherwise try EDID
#fb=disable # to disable fb completely
EOF
cat > ${mnt}/boot/config.txt << EOF
# UART settings, see https://www.raspberrypi.org/documentation/configuration/uart.md
enable_uart=1
force_turbo=0
EOF
if [ ! -f ${kernel} ]; then
echo ${PROG}: Missing ${kernel} 1>&2
exit 1

9
distrib/utils/embedded/conf/rpi_inst.conf
View File

@ -1,4 +1,4 @@
# $NetBSD: rpi_inst.conf,v 1.8 2015/04/19 18:53:33 hubertf Exp $
# $NetBSD: rpi_inst.conf,v 1.9 2017/07/31 16:34:22 jmcneill Exp $
# Raspberry Pi customization script used by mkimage
#
@ -82,6 +82,13 @@ root=ld0a console=fb
#fb=1280x1024 # to select a mode, otherwise try EDID
#fb=disable # to disable fb completely
EOF
cat > ${mnt}/boot/config.txt << EOF
# UART settings, see https://www.raspberrypi.org/documentation/configuration/uart.md
enable_uart=1
force_turbo=0
EOF
if [ ! -f ${kernel} ]; then
echo ${PROG}: Missing ${kernel} 1>&2
exit 1