kumquat-buildroot/board/raspberrypi/config_3.txt
Gaël PORTAY 5be42d8da3 board/raspberrypi: fix autoprobing of bluetooth driver
The commit 689b9ac439 (package/rpi-firmware: rework boot/config file
handling) has split in two the property:

	dtoverlay=miniuart-bt,krnbt=on

Into:

	dtoverlay=miniuart-bt
	dtoverlay=krnbt=on

The initial property contained the dtbo file miniuart-bt[1] and its
parameter krnbt=on[2][3].

The first syntax is correct while the second is not. The krnbt=on is not
a dtoverlay[4] but a dtparam[5]. Therefore the property dtparam must be
used instead.

This fixes:

	# cat /sys/firmware/devicetree/base/chosen/user-warnings
	Failed to load overlay 'krnbt=on'

[1]: https://github.com/raspberrypi/linux/blob/rpi-5.10.y/arch/arm/boot/dts/overlays/miniuart-bt-overlay.dts
[2]: https://github.com/raspberrypi/linux/blob/rpi-5.10.y/arch/arm/boot/dts/overlays/miniuart-bt-overlay.dts#L91
[3]: https://github.com/raspberrypi/linux/blob/rpi-5.10.y/arch/arm/boot/dts/overlays/README#L213-L215
[4]: https://www.raspberrypi.com/documentation/computers/config_txt.html#dtoverlay
[5]: https://www.raspberrypi.com/documentation/computers/config_txt.html#dtparam

Signed-off-by: Gaël PORTAY <gael.portay@rtone.fr>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
2023-11-27 19:39:34 +01:00

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# Please note that this is only a sample, we recommend you to change it to fit
# your needs.
# You should override this file using BR2_PACKAGE_RPI_FIRMWARE_CONFIG_FILE.
# See http://buildroot.org/manual.html#rootfs-custom
# and http://elinux.org/RPiconfig for a description of config.txt syntax
start_file=start.elf
fixup_file=fixup.dat
kernel=zImage
# To use an external initramfs file
#initramfs rootfs.cpio.gz
# Disable overscan assuming the display supports displaying the full resolution
# If the text shown on the screen disappears off the edge, comment this out
disable_overscan=1
# How much memory in MB to assign to the GPU on Pi models having
# 256, 512 or 1024 MB total memory
gpu_mem_256=100
gpu_mem_512=100
gpu_mem_1024=100
# fixes rpi (3B, 3B+, 3A+, 4B and Zero W) ttyAMA0 serial console
dtoverlay=miniuart-bt
# enable autoprobing of Bluetooth driver without need of hciattach/btattach
dtparam=krnbt=on