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
- 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
Signed-off-by: Ludwig Kormann <ludwig.korm...@in-circuit.de>
---
 arch/arm/dts/Makefile                         |   1 +
 arch/arm/dts/sun7i-a20-icnova-a20-adb4006.dts | 248 ++++++++++++++++++
 board/sunxi/MAINTAINERS                       |   5 +
 configs/icnova-a20-adb4006_defconfig          |  25 ++
 4 files changed, 279 insertions(+)
 create mode 100644 arch/arm/dts/sun7i-a20-icnova-a20-adb4006.dts
 create mode 100644 configs/icnova-a20-adb4006_defconfig

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 0a9b1f7749..47dcaff780 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -623,6 +623,7 @@ 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 \
diff --git a/arch/arm/dts/sun7i-a20-icnova-a20-adb4006.dts 
b/arch/arm/dts/sun7i-a20-icnova-a20-adb4006.dts
new file mode 100644
index 0000000000..e43df838ec
--- /dev/null
+++ b/arch/arm/dts/sun7i-a20-icnova-a20-adb4006.dts
@@ -0,0 +1,248 @@
+/*
+ * Copyright 2023 Ludwig Kormann <ludwig.korm...@in-circuit.de>
+ *
+ * This file is dual-licensed: you can use it either under the terms
+ * of the GPL or the X11 license, at your option. Note that this dual
+ * licensing only applies to this file, and not this project as a
+ * whole.
+ *
+ *  a) This file is free software; you can redistribute it and/or
+ *     modify it under the terms of the GNU General Public License as
+ *     published by the Free Software Foundation; either version 2 of the
+ *     License, or (at your option) any later version.
+ *
+ *     This file is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ * Or, alternatively,
+ *
+ *  b) Permission is hereby granted, free of charge, to any person
+ *     obtaining a copy of this software and associated documentation
+ *     files (the "Software"), to deal in the Software without
+ *     restriction, including without limitation the rights to use,
+ *     copy, modify, merge, publish, distribute, sublicense, and/or
+ *     sell copies of the Software, and to permit persons to whom the
+ *     Software is furnished to do so, subject to the following
+ *     conditions:
+ *
+ *     The above copyright notice and this permission notice shall be
+ *     included in all copies or substantial portions of the Software.
+ *
+ *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *     OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/dts-v1/;
+#include "sun7i-a20.dtsi"
+#include "sunxi-common-regulators.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+
+/ {
+       model = "In-Circuit ICnova A20 ADB4006";
+       compatible = "in-circuit,icnova-a20-adb4006", "incircuit,icnova-a20",
+                    "allwinner,sun7i-a20";
+
+       aliases {
+               serial0 = &uart0;
+       };
+
+       chosen {
+               stdout-path = "serial0:115200n8";
+       };
+
+       hdmi-connector {
+               compatible = "hdmi-connector";
+               type = "a";
+
+               port {
+                       hdmi_con_in: endpoint {
+                               remote-endpoint = <&hdmi_out_con>;
+                       };
+               };
+       };
+
+       leds {
+               compatible = "gpio-leds";
+               pinctrl-names = "default";
+               pinctrl-0 = <&led_pins_icnova_a20_adb4006>;
+
+               led-0 {
+                       label = "icnova_a20_adb4006:yellow:usr";
+                       gpios = <&pio 7 21 GPIO_ACTIVE_HIGH>;
+               };
+
+               led-1 {
+                       label = "icnova_a20_adb4006:red:usr";
+                       gpios = <&pio 7 20 GPIO_ACTIVE_HIGH>;
+                       linux,default-trigger = "heartbeat";
+               };
+       };
+};
+
+&ahci {
+       target-supply = <&reg_ahci_5v>;
+       status = "okay";
+};
+
+&codec {
+       status = "okay";
+};
+
+&cpu0 {
+       cpu-supply = <&reg_dcdc2>;
+};
+
+&de {
+       status = "okay";
+};
+
+&ehci0 {
+       status = "okay";
+};
+
+&ehci1 {
+       status = "okay";
+};
+
+&gmac {
+       pinctrl-names = "default";
+       pinctrl-0 = <&gmac_mii_pins>;
+       phy-handle = <&phy1>;
+       phy-mode = "mii";
+       status = "okay";
+};
+
+&hdmi {
+       status = "okay";
+};
+
+&hdmi_out {
+       hdmi_out_con: endpoint {
+               remote-endpoint = <&hdmi_con_in>;
+       };
+};
+
+&i2c0 {
+       status = "okay";
+
+       axp209: pmic@34 {
+               reg = <0x34>;
+               interrupt-parent = <&nmi_intc>;
+               interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
+       };
+};
+
+&i2c1 {
+       status = "okay";
+};
+
+&gmac_mdio {
+       phy1: ethernet-phy@1 {
+               reg = <1>;
+       };
+};
+
+&mmc0 {
+       vmmc-supply = <&reg_vcc3v3>;
+       bus-width = <4>;
+       cd-gpios = <&pio 7 1 GPIO_ACTIVE_LOW>; /* PH1 */
+       status = "okay";
+};
+
+&ohci0 {
+       status = "okay";
+};
+
+&ohci1 {
+       status = "okay";
+};
+
+&otg_sram {
+       status = "okay";
+};
+
+&pio {
+       led_pins_icnova_a20_adb4006: led-pins {
+               pins = "PH20", "PH21";
+               function = "gpio_out";
+               drive-strength = <20>;
+       };
+};
+
+&reg_ahci_5v {
+       status = "okay";
+};
+
+#include "axp209.dtsi"
+
+&ac_power_supply {
+       status = "okay";
+};
+
+&reg_dcdc2 {
+       regulator-always-on;
+       regulator-min-microvolt = <1000000>;
+       regulator-max-microvolt = <1400000>;
+       regulator-name = "vdd-cpu";
+};
+
+&reg_dcdc3 {
+       regulator-always-on;
+       regulator-min-microvolt = <1000000>;
+       regulator-max-microvolt = <1400000>;
+       regulator-name = "vdd-int-dll";
+};
+
+&reg_ldo1 {
+       regulator-name = "vdd-rtc";
+};
+
+&reg_ldo2 {
+       regulator-always-on;
+       regulator-min-microvolt = <3000000>;
+       regulator-max-microvolt = <3000000>;
+       regulator-name = "avcc";
+};
+
+&reg_ldo4 {
+       regulator-always-on;
+       regulator-min-microvolt = <2800000>;
+       regulator-max-microvolt = <2800000>;
+       regulator-name = "csi-io";
+};
+
+&reg_usb1_vbus {
+       status = "okay";
+};
+
+&reg_usb2_vbus {
+       status = "okay";
+};
+
+&uart0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&uart0_pb_pins>;
+       status = "okay";
+};
+
+&usb_otg {
+       dr_mode = "otg";
+       status = "okay";
+};
+
+&usbphy {
+       usb0_id_det-gpios = <&pio 7 4 GPIO_ACTIVE_HIGH | GPIO_PULL_UP>; /* PH4 
*/
+       usb1_vbus-supply = <&reg_usb1_vbus>;
+       usb2_vbus-supply = <&reg_usb2_vbus>;
+       status = "okay";
+};
diff --git a/board/sunxi/MAINTAINERS b/board/sunxi/MAINTAINERS
index 80e3f4be4b..2bbf0188d7 100644
--- a/board/sunxi/MAINTAINERS
+++ b/board/sunxi/MAINTAINERS
@@ -231,6 +231,11 @@ M: Stefan Roese <s...@denx.de>
 S:     Maintained
 F:     configs/icnova-a20-swac_defconfig
 
+ICnova-A20-ADB4006 BOARD
+M:     Ludwig Kormann <ludwig.korm...@in-circuit.de>
+S:     Maintained
+F:     configs/icnova-a20-adb4006_defconfig
+
 ITEAD IBOX BOARD
 M:     Marcus Cooper <codekip...@gmail.com>
 S:     Maintained
diff --git a/configs/icnova-a20-adb4006_defconfig 
b/configs/icnova-a20-adb4006_defconfig
new file mode 100644
index 0000000000..c327410ca7
--- /dev/null
+++ b/configs/icnova-a20-adb4006_defconfig
@@ -0,0 +1,25 @@
+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_USB0_VBUS_DET="PH5"
+CONFIG_USB0_ID_DET="PH4"
+CONFIG_USB1_VBUS_PIN="PH6"
+CONFIG_USB2_VBUS_PIN="PH3"
+CONFIG_SATAPWR="PB8"
+CONFIG_AHCI=y
+# CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
+CONFIG_SPL_I2C=y
+CONFIG_SCSI_AHCI=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
-- 
2.30.2

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