Comments regarding RPI 0W in extlinux.conf and config_common.txt

board/raspberrypi/config_common.txt

@@ -1,13 +1,12 @@
-# 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
 
+# Device tree to be used bu U-Boot:
 device_tree=bcm2835-rpi-b-plus.dtb
+#device_tree=bcm2835-rpi-zero-w.dtb
 kernel=u-boot.bin
 
 # To use an external initramfs file

board/raspberrypi/extlinux.conf

@@ -1,5 +1,9 @@
 label buildroot
 	kernel /zImage
 	devicetree /bcm2835-rpi-b-plus.dtb
+#	devicetree /bcm2835-rpi-zero-w.dtb
 	devicetree-overlay /ssd1306.dtbo
 	append root=/dev/mmcblk0p2 rootwait console=tty1 console=ttyAMA0,115200
+
+# In Raspberry Pi Zero W, the mini-uart is used for console instead of the PL011:
+#	append root=/dev/mmcblk0p2 rootwait console=tty1 console=ttyS1,115200

configs/raspberrypi_common_defconfig

@@ -19,12 +19,15 @@ BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.12.74"
 BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
 BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="$(BR2_EXTERNAL_RPI_COMMON_PATH)/board/raspberrypi/linux_defconfig"
 BR2_LINUX_KERNEL_DTS_SUPPORT=y
-BR2_LINUX_KERNEL_INTREE_DTS_NAME="broadcom/bcm2835-rpi-b-plus"
+BR2_LINUX_KERNEL_INTREE_DTS_NAME="broadcom/bcm2835-rpi-b-plus broadcom/bcm2835-rpi-zero-w"
 BR2_LINUX_KERNEL_CUSTOM_DTS_DIR="$(BR2_EXTERNAL_RPI_COMMON_PATH)/board/raspberrypi/dtoverlay/"
 BR2_LINUX_KERNEL_DTB_OVERLAY_SUPPORT=y
 BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y
 BR2_PACKAGE_XZ=y
 BR2_PACKAGE_GDB=y
+BR2_PACKAGE_BRCMFMAC_SDIO_FIRMWARE_RPI=y
+BR2_PACKAGE_BRCMFMAC_SDIO_FIRMWARE_RPI_BT=y
+BR2_PACKAGE_BRCMFMAC_SDIO_FIRMWARE_RPI_WIFI=y
 BR2_PACKAGE_LINUX_FIRMWARE=y
 BR2_PACKAGE_LINUX_FIRMWARE_RTL_RTW88=y
 BR2_PACKAGE_RPI_FIRMWARE=y