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board/raspberrypi: use kernel Bluetooth mode

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The default setting with miniuart-bt requires hciattach which is a
deprecated utility in BlueZ.  Setting the krnbt parameter switches to
the modern method of using serdev in the kernel removing the need for
any userspace configuration to enable the Bluetooth controller.

This is documented as applying to all Raspberry Pi variants so just
enable it globally.

Signed-off-by: John Keeping <john@metanate.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit is contained in:
John Keeping 2021-07-14 15:51:32 +01:00 committed by Thomas Petazzoni
parent f943478807
commit 5352a77102
1 changed files with 1 additions and 1 deletions
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2
board/raspberrypi/post-image.sh
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@ -16,7 +16,7 @@ do
cat << __EOF__ >> "${BINARIES_DIR}/rpi-firmware/config.txt"
# fixes rpi (3B, 3B+, 3A+, 4B and Zero W) ttyAMA0 serial console
dtoverlay=miniuart-bt
dtoverlay=miniuart-bt,krnbt=on
__EOF__
fi
;;