bump version to 2022.02.9

add miyoo_defconfig

board/sinovoip/m1-plus/readme.txt

@@ -0,0 +1,64 @@
+Banana Pi M1+
+
+Intro
+=====
+
+This default configuration will allow you to start experimenting with the
+Buildroot environment for the Banana Pi M1+. With the current configuration
+it will bring-up the board, and allow access through the serial console.
+
+How to build it
+===============
+
+Configure Buildroot:
+
+  $ make bananapi_m1_plus_defconfig
+
+Compile everything and build the SD card image:
+
+  $ make
+
+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":
+
+  $ dd if=output/images/sdcard.img of=/dev/sdX
+
+Notes:
+  - replace 'sdX' with the actual device with your micro SD card
+  - you may need to be root to do that (use 'sudo')
+
+Insert the micro SD card in your Banana Pi M1+ and power it up. The console
+is on the debug TTL UART, 115200 8N1.
+
+Ethernet
+==========
+
+  # udhcpc -i eth0
+
+Wifi
+==========
+
+  # wpa_passphrase YOUR_SSID >> /etc/wpa_supplicant.conf
+  (enter the wifi password and press enter)
+  # wpa_supplicant -i wlan0 -c /etc/wpa_supplicant.conf -B
+  # udhcpc -i wlan0
+
+Note:
+  - replace 'YOUR_SSID' with the actual SSID from your access point
+
+Audio
+==========
+
+For this example you need package alsa-utils.
+
+Connect a headphone to the 3.5mm jack (TRRS). Note, that the Banana Pi M1+
+has an on-board microphone, too.
+
+  # amixer cset name='Power Amplifier DAC Playback Switch' on
+  # amixer cset name='Power Amplifier Mute Switch' on
+  # amixer cset name='Power Amplifier Volume' 42