initial buildroot for linux 5.15

board/orangepi/orangepi-zero-plus2/boot.cmd

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+setenv bootargs console=ttyS0,115200 earlyprintk root=PARTLABEL=rootfs rootwait
+
+fatload mmc 0 $kernel_addr_r Image
+fatload mmc 0 $fdt_addr_r sun50i-h5-orangepi-zero-plus2.dtb
+
+booti $kernel_addr_r - $fdt_addr_r

board/orangepi/orangepi-zero-plus2/genimage.cfg

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+image boot.vfat {
+	vfat {
+		files = {
+			"Image",
+			"sun50i-h5-orangepi-zero-plus2.dtb",
+			"boot.scr"
+		}
+	}
+
+	size = 64M
+}
+
+image sdcard.img {
+	hdimage {
+		# for root=PARTLABEL support
+		gpt = true
+		# default GPT location conflicts with bootloaders, move it after
+		gpt-location = 1M
+	}
+
+	partition spl {
+		in-partition-table = "no"
+		image = "u-boot-sunxi-with-spl.bin"
+		offset = 8K
+		size = 1032K # 1MB - 8KB + 16KB(GPT)
+	}
+
+	partition boot {
+		partition-type = 0xC
+		bootable = "true"
+		image = "boot.vfat"
+	}
+
+	# 'rootfs' will be used as the partition label, used
+	# with root=PARTLABEL=rootfs kernel command line
+	partition rootfs {
+		partition-type = 0x83
+		image = "rootfs.ext4"
+		size = 256M
+	}
+}

board/orangepi/orangepi-zero-plus2/linux-extras.config

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+# wireless core
+CONFIG_WIRELESS=y
+CONFIG_CFG80211=y
+CONFIG_MAC80211=y
+CONFIG_CFG80211_WEXT=y
+
+# wireless drivers
+CONFIG_WLAN=y
+CONFIG_WLAN_VENDOR_BROADCOM=y
+CONFIG_BRCMFMAC=m

board/orangepi/orangepi-zero-plus2/readme.txt

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+Intro
+=====
+
+This default configuration will allow you to start experimenting with the
+buildroot environment for the Orangepi Zero Plus2. With the current configuration
+it will bring-up the board, and allow access through the serial console.
+
+Orangepi Zero Plus2 link:
+http://www.orangepi.org/OrangePiZeroPlus2/
+
+Wiki link:
+https://openedev.amarulasolutions.com/display/ODWIKI/Orangepi+Zero+Plus2
+
+This configuration uses U-Boot mainline and kernel mainline.
+
+How to build
+============
+
+    $ make orangepi_zero_plus2_defconfig
+    $ make
+
+Note: you will need access to the internet to download the required
+sources.
+
+How to write the SD card
+========================
+
+Once the build process is finished you will have an image called "sdcard.img"
+in the output/images/ directory.
+
+Copy the bootable "sdcard.img" onto an SD card with "dd":
+
+  $ sudo dd if=output/images/sdcard.img of=/dev/sdX
+  $ sudo sync
+
+Insert the micro SDcard in your Orangepi Zero Plus2 and power it up. The console
+is on the serial line, 115200 8N1.

board/orangepi/orangepi-zero-plus2/rootfs_overlay/lib/firmware/brcm/brcmfmac43430-sdio.txt

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+#AP6212_NVRAM_V1.0_20140603
+# 2.4 GHz, 20 MHz BW mode
+
+# The following parameter values are just placeholders, need to be updated.
+manfid=0x2d0
+prodid=0x0726
+vendid=0x14e4
+devid=0x43e2
+boardtype=0x0726
+boardrev=0x1101
+boardnum=22
+macaddr=00:90:4c:c5:12:38
+sromrev=11
+boardflags=0x00404201
+xtalfreq=26000
+nocrc=1
+ag0=255
+aa2g=1
+ccode=ALL
+
+pa0itssit=0x20
+extpagain2g=0
+
+#PA parameters for 2.4GHz, measured at CHIP OUTPUT
+pa2ga0=-168,7161,-820
+AvVmid_c0=0x0,0xc8
+cckpwroffset0=5
+
+# PPR params
+maxp2ga0=90
+txpwrbckof=6
+cckbw202gpo=0x5555
+legofdmbw202gpo=0x77777777
+mcsbw202gpo=0xaaaaaaaa
+
+# OFDM IIR :
+ofdmdigfilttype=7
+# PAPD mode:
+papdmode=2
+
+il0macaddr=00:90:4c:c5:12:38
+wl0id=0x431b
+
+#OOB parameters
+hostwake=0x40
+hostrdy=0x41
+usbrdy=0x03
+usbrdydelay=100
+deadman_to=0xffffffff
+# muxenab: 0x1 for UART enable, 0x10 for Host awake
+muxenab=0x10
+# CLDO PWM voltage settings - 0x4 - 1.1 volt
+#cldo_pwm=0x4
+