--- /dev/null
+diff -ruN u-boot-2020.04.old/arch/arm/dts/sun7i-a20-rgl-c64mini.dts u-boot-2020.04/arch/arm/dts/sun7i-a20-rgl-c64mini.dts
+--- u-boot-2020.04.old/arch/arm/dts/sun7i-a20-rgl-c64mini.dts 1970-01-01 01:00:00.000000000 +0100
++++ u-boot-2020.04/arch/arm/dts/sun7i-a20-rgl-c64mini.dts 2020-07-07 11:32:47.000000000 +0200
+@@ -0,0 +1,254 @@
++/*
++ * This is based on sun4i-a10-olinuxino-lime.dts
++ *
++ * Copyright 2014 - Hans de Goede <hdegoede@redhat.com>
++ * Copyright (c) 2014 FUKAUMI Naoki <naobsd@gmail.com>
++ *
++ * 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 = "Retro Games C=64 Mini";
++ compatible = "rgl,c64-mini", "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_olinuxinolime>;
++
++ green {
++ label = "a20-olinuxino-lime:green:usr";
++ gpios = <&pio 7 2 GPIO_ACTIVE_HIGH>;
++ default-state = "on";
++ };
++ };
++};
++
++&de {
++ status = "okay";
++};
++
++&ehci0 {
++ status = "okay";
++};
++
++&ehci1 {
++ status = "okay";
++};
++
++&hdmi {
++ status = "okay";
++};
++
++&hdmi_out {
++ hdmi_out_con: endpoint {
++ remote-endpoint = <&hdmi_con_in>;
++ };
++};
++
++&i2c0 {
++ status = "okay";
++
++ axp209: pmic@34 {
++ compatible = "x-powers,axp209";
++ reg = <0x34>;
++ interrupt-parent = <&nmi_intc>;
++ interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
++
++ interrupt-controller;
++ #interrupt-cells = <1>;
++ };
++};
++
++&i2c1 {
++ status = "okay";
++
++ eeprom: eeprom@50 {
++ compatible = "atmel,24c16";
++ reg = <0x50>;
++ pagesize = <16>;
++ };
++};
++
++&mmc0 {
++ vmmc-supply = <®_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_olinuxinolime: led_pins@0 {
++ pins = "PH2";
++ function = "gpio_out";
++ drive-strength = <20>;
++ };
++
++ usb0_id_detect_pin: usb0_id_detect_pin@0 {
++ pins = "PH4";
++ function = "gpio_in";
++ bias-pull-up;
++ };
++
++ usb0_vbus_detect_pin: usb0_vbus_detect_pin@0 {
++ pins = "PH5";
++ function = "gpio_in";
++ bias-pull-down;
++ };
++
++ nand_pins: nand-pins {
++ pins = "PC0", "PC1", "PC2", "PC5",
++ "PC8", "PC9", "PC10", "PC11",
++ "PC12", "PC13", "PC14", "PC15";
++ function = "nand0";
++ };
++
++ nand_pins_cs0: nand-pins-cs0 {
++ pins = "PC4";
++ function = "nand0";
++ bias-pull-up;
++ };
++
++ nand_pins_cs1: nand-pins-cs1 {
++ pins = "PC3";
++ function = "nand0";
++ bias-pull-up;
++ };
++
++ nand_pins_rb0: nand-pins-rb0 {
++ pins = "PC6";
++ function = "nand0";
++ bias-pull-up;
++ };
++
++ nand_pins_rb1: nand-pins-rb1 {
++ pins = "PC7";
++ function = "nand0";
++ bias-pull-up;
++ };
++};
++
++®_usb0_vbus {
++ status = "okay";
++};
++
++®_usb1_vbus {
++ status = "okay";
++};
++
++®_usb2_vbus {
++ status = "okay";
++};
++
++&uart0 {
++ pinctrl-names = "default";
++ pinctrl-0 = <&uart0_pb_pins>;
++ status = "okay";
++};
++
++&usb_otg {
++ dr_mode = "otg";
++ status = "okay";
++};
++
++&usbphy {
++ pinctrl-names = "default";
++ pinctrl-0 = <&usb0_id_detect_pin>, <&usb0_vbus_detect_pin>;
++ usb0_id_det-gpio = <&pio 7 4 GPIO_ACTIVE_HIGH>; /* PH4 */
++ usb0_vbus_det-gpio = <&pio 7 5 GPIO_ACTIVE_HIGH>; /* PH5 */
++ usb0_vbus-supply = <®_usb0_vbus>;
++ usb1_vbus-supply = <®_usb1_vbus>;
++ usb2_vbus-supply = <®_usb2_vbus>;
++ status = "okay";
++};
++
++&nfc {
++ status = "okay";
++ pinctrl-names = "default";
++ pinctrl-0 = <&nand_pins>, <&nand_pins_cs0>, <&nand_pins_rb0>;
++
++ /* ESMT NAND 128MiB 3,3V 8-bit */
++ nand@0 {
++ #address-cells = <1>;
++ #size-cells = <1>;
++ reg = <0>;
++ allwinner,rb = <0>;
++ nand-ecc-mode = "hw";
++ nand-ecc-strength = <16>;
++ nand-ecc-step-size = <1024>;
++ };
++};
+diff -ruN u-boot-2020.04.old/configs/rgl_c64mini_defconfig u-boot-2020.04/configs/rgl_c64mini_defconfig
+--- u-boot-2020.04.old/configs/rgl_c64mini_defconfig 1970-01-01 01:00:00.000000000 +0100
++++ u-boot-2020.04/configs/rgl_c64mini_defconfig 2020-07-07 23:52:25.574583780 +0200
+@@ -0,0 +1,14 @@
++CONFIG_ARM=y
++CONFIG_ARCH_SUNXI=y
++CONFIG_SPL=y
++CONFIG_MACH_SUN7I=y
++CONFIG_DRAM_CLK=384
++CONFIG_MMC0_CD_PIN="PH1"
++CONFIG_I2C1_ENABLE=y
++# CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
++CONFIG_SPL_I2C_SUPPORT=y
++CONFIG_DEFAULT_DEVICE_TREE="sun7i-a20-rgl-c64mini"
++CONFIG_AXP_ALDO3_VOLT=2800
++CONFIG_AXP_ALDO4_VOLT=2800
++CONFIG_USB_EHCI_HCD=y
++CONFIG_USB_OHCI_HCD=y
+diff -ruN a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
+--- a/arch/arm/dts/Makefile 2021-01-18 10:07:44.318693224 +0100
++++ b/arch/arm/dts/Makefile 2021-01-18 10:35:00.953333457 +0100
+@@ -491,6 +491,7 @@
+ sun7i-a20-pcduino3.dtb \
+ sun7i-a20-pcduino3-nano.dtb \
+ sun7i-a20-primo73.dtb \
++ sun7i-a20-rgl-c64mini.dtb \
+ sun7i-a20-wexler-tab7200.dtb \
+ sun7i-a20-wits-pro-a20-dkt.dtb \
+ sun7i-a20-yones-toptech-bd1078.dtb
--- /dev/null
+diff -ruN a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
+--- a/arch/arm/boot/dts/Makefile 2019-02-06 17:30:16.000000000 +0100
++++ b/arch/arm/boot/dts/Makefile 2019-02-13 17:48:08.493420738 +0100
+@@ -1006,6 +1006,7 @@
+ sun7i-a20-orangepi-mini.dtb \
+ sun7i-a20-pcduino3.dtb \
+ sun7i-a20-pcduino3-nano.dtb \
++ sun7i-a20-c64mini.dtb \
+ sun7i-a20-wexler-tab7200.dtb \
+ sun7i-a20-wits-pro-a20-dkt.dtb
+ dtb-$(CONFIG_MACH_SUN8I) += \
+diff -ruN a/arch/arm/boot/dts/sun7i-a20-c64mini.dts b/arch/arm/boot/dts/sun7i-a20-c64mini.dts
+--- a/arch/arm/boot/dts/sun7i-a20-c64mini.dts 1970-01-01 01:00:00.000000000 +0100
++++ b/arch/arm/boot/dts/sun7i-a20-c64mini.dts 2019-02-13 17:54:22.550445293 +0100
+@@ -0,0 +1,205 @@
++/*
++ * This is based on sun4i-a10-olinuxino-lime.dts
++ *
++ * Copyright 2014 - Hans de Goede <hdegoede@redhat.com>
++ * Copyright (c) 2014 FUKAUMI Naoki <naobsd@gmail.com>
++ * Copyright (c) 2020 Zoltan HERPAI <wigyori@uid0.hu
++ *
++ * 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 = "Retro Games C=64 Mini";
++ compatible = "rgl,c64-mini", "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_olinuxinolime>;
++
++ green {
++ label = "a20-olinuxino-lime:green:usr";
++ gpios = <&pio 7 2 GPIO_ACTIVE_HIGH>;
++ default-state = "on";
++ };
++ };
++};
++
++&de {
++ status = "okay";
++};
++
++&ehci0 {
++ status = "okay";
++};
++
++&ehci1 {
++ status = "okay";
++};
++
++&hdmi {
++ status = "okay";
++};
++
++&hdmi_out {
++ hdmi_out_con: endpoint {
++ remote-endpoint = <&hdmi_con_in>;
++ };
++};
++
++&i2c0 {
++ status = "okay";
++
++ axp209: pmic@34 {
++ compatible = "x-powers,axp209";
++ reg = <0x34>;
++ interrupt-parent = <&nmi_intc>;
++ interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
++
++ interrupt-controller;
++ #interrupt-cells = <1>;
++ };
++};
++
++&i2c1 {
++ status = "okay";
++
++ eeprom: eeprom@50 {
++ compatible = "atmel,24c16";
++ reg = <0x50>;
++ pagesize = <16>;
++ };
++};
++
++&mmc0 {
++ vmmc-supply = <®_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_olinuxinolime: led_pins@0 {
++ pins = "PH2";
++ function = "gpio_out";
++ drive-strength = <20>;
++ };
++
++ usb0_id_detect_pin: usb0_id_detect_pin@0 {
++ pins = "PH4";
++ function = "gpio_in";
++ bias-pull-up;
++ };
++
++ usb0_vbus_detect_pin: usb0_vbus_detect_pin@0 {
++ pins = "PH5";
++ function = "gpio_in";
++ bias-pull-down;
++ };
++};
++
++®_usb0_vbus {
++ status = "okay";
++};
++
++®_usb1_vbus {
++ status = "okay";
++};
++
++®_usb2_vbus {
++ status = "okay";
++};
++
++&uart0 {
++ status = "okay";
++};
++
++&usb_otg {
++ dr_mode = "otg";
++ status = "okay";
++};
++
++&usbphy {
++ pinctrl-names = "default";
++ pinctrl-0 = <&usb0_id_detect_pin>, <&usb0_vbus_detect_pin>;
++ usb0_id_det-gpio = <&pio 7 4 GPIO_ACTIVE_HIGH>; /* PH4 */
++ usb0_vbus_det-gpio = <&pio 7 5 GPIO_ACTIVE_HIGH>; /* PH5 */
++ usb0_vbus-supply = <®_usb0_vbus>;
++ usb1_vbus-supply = <®_usb1_vbus>;
++ usb2_vbus-supply = <®_usb2_vbus>;
++ status = "okay";
++};