arm: dts: icnova-a20-adb4006: Add board support

Add board support for ICnova A20 SomPi compute module on
ICnova ADB4006 development board.

Specification:
SoM
- Processor: Allwinner A20 Cortex-A7 Dual Core at 1GHz
- 512MB DDR3 RAM
- Fast Ethernet (Phy: Realtek RTL8201CP)
ADB4006
- I2C
- 2x USB 2.0
- 1x Fast Ethernet port
- 1x SATA
- 2x buttons (PWRON, Boot)
- 2x LEDS
- serial console
- HDMI
- µSD-Card slot
- Audio Line-In / Line-Out
- GPIO pinheaders

https://wiki.in-circuit.de/index.php5?title=ICnova_ADB4006
https://wiki.in-circuit.de/index.php5?title=ICnova_A20_SODIMM

devicetree upstreamed with linux 6.5

Signed-off-by: Ludwig Kormann <ludwig.kormann@ict42.de>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>

arch/arm/dts/Makefile

@@ -721,6 +721,7 @@ dtb-$(CONFIG_MACH_SUN7I) += \
 	sun7i-a20-haoyu-marsboard.dtb \
 	sun7i-a20-hummingbird.dtb \
 	sun7i-a20-i12-tvbox.dtb \
+	sun7i-a20-icnova-a20-adb4006.dtb \
 	sun7i-a20-icnova-swac.dtb \
 	sun7i-a20-itead-ibox.dtb \
 	sun7i-a20-lamobo-r1.dtb \

board/sunxi/MAINTAINERS

@@ -236,6 +236,11 @@ M:	Stefan Roese <sr@denx.de>
 S:	Maintained
 F:	configs/icnova-a20-swac_defconfig
 
+ICnova-A20-ADB4006 BOARD
+M:	Ludwig Kormann <ludwig.kormann@ict42.de>
+S:	Maintained
+F:	configs/icnova-a20-adb4006_defconfig
+
 ITEAD IBOX BOARD
 M:	Marcus Cooper <codekipper@gmail.com>
 S:	Maintained

configs/icnova-a20-adb4006_defconfig

@@ -0,0 +1,21 @@
+CONFIG_ARM=y
+CONFIG_ARCH_SUNXI=y
+CONFIG_DEFAULT_DEVICE_TREE="sun7i-a20-icnova-a20-adb4006"
+CONFIG_SPL=y
+CONFIG_MACH_SUN7I=y
+CONFIG_DRAM_CLK=384
+CONFIG_AHCI=y
+# CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
+CONFIG_SPL_I2C=y
+CONFIG_SCSI_AHCI=y
+CONFIG_SYS_64BIT_LBA=y
+CONFIG_SYS_I2C_MVTWSI=y
+CONFIG_SYS_I2C_SLAVE=0x7f
+CONFIG_SYS_I2C_SPEED=400000
+CONFIG_ETH_DESIGNWARE=y
+CONFIG_MII=y
+CONFIG_SUN7I_GMAC=y
+CONFIG_AXP_ALDO4_VOLT=2800
+CONFIG_SCSI=y
+CONFIG_USB_EHCI_HCD=y
+CONFIG_USB_OHCI_HCD=y