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The Raspberry Pi with Bluetooth connectivity up to 4 (i.e. Zero W, Zero 2 W, 3, 4 and Compute Module 4) use the miniuart-bt overlay to restore UART0 for the serial console (like the Raspberry Pi and Raspberry Pi 2 that have no Bluetooth); the Bluetooth uses the mini-UART instead[1][2]. This rewords the comment instead of enumerating every hardwares that can be extended in the future. [1]: https://www.raspberrypi.com/documentation/computers/configuration.html#uarts-and-device-tree [2]: https://github.com/raspberrypi/linux/blob/rpi-6.6.y/arch/arm/boot/dts/overlays/miniuart-bt-overlay.dts#L4-L6 Signed-off-by: Gaël PORTAY <gael.portay@rtone.fr> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
34 lines
952 B
Plaintext
34 lines
952 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=start4.elf
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fixup_file=fixup4.dat
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kernel=zImage
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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 RTC
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dtparam=i2c_vc=on
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dtoverlay=i2c-rtc,pcf85063a,i2c_csi_dsi
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# enable dwc2 USB controller (USB 2.0)
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dtoverlay=dwc2,dr_mode=host
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