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The config.txt of the Rasperry Pi's supporting Wi-Fi and Bluetooth (i.e. zero W, zero 2 W, 3, and 4) switch the Bluetooth function to use the mini-UART (ttyS0) and restore UART0 (ttyAMA0) over the GPIOs 14 and 15 (as per miniuart-bt-overlay.dts[1]). All of them turn "on" the parameter krnbt to autoprobe the bluetooth driver. According to the README.md, the dtparam krnbt is now defaulting to "on" since linux-raspberrypi 6.1.y[2]; it was defaulting to "off" before[3]. This removes the dtparam=krnbt=on from these config.txt files since the value set is actually the default value. [1]: https://github.com/raspberrypi/linux/blob/rpi-6.1.y/arch/arm/boot/dts/overlays/miniuart-bt-overlay.dts [2]: https://github.com/raspberrypi/linux/blob/rpi-6.1.y/arch/arm/boot/dts/overlays/README#L294-L296 [3]: https://github.com/raspberrypi/linux/blob/rpi-5.10.y/arch/arm/boot/dts/overlays/README#L213-L215 Signed-off-by: Gaël PORTAY <gael.portay+rtone@gmail.com> Signed-off-by: Arnout Vandecappelle <arnout@mind.be>
30 lines
846 B
Plaintext
30 lines
846 B
Plaintext
# Please note that this is only a sample, we recommend you to change it to fit
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# your needs.
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# You should override this file using BR2_PACKAGE_RPI_FIRMWARE_CONFIG_FILE.
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# See http://buildroot.org/manual.html#rootfs-custom
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# and http://elinux.org/RPiconfig for a description of config.txt syntax
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start_file=start.elf
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fixup_file=fixup.dat
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kernel=Image
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# To use an external initramfs file
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#initramfs rootfs.cpio.gz
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# Disable overscan assuming the display supports displaying the full resolution
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# If the text shown on the screen disappears off the edge, comment this out
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disable_overscan=1
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# How much memory in MB to assign to the GPU on Pi models having
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# 256, 512 or 1024 MB total memory
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gpu_mem_256=100
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gpu_mem_512=100
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gpu_mem_1024=100
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# Enable UART0 for serial console on ttyAMA0
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dtoverlay=miniuart-bt
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# enable 64bits support
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arm_64bit=1
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