[PATCH v2] ARM: sun7i: Add Cubietech Einstein A20 board device-tree

From: Frank Kunz
Date: Thu Nov 02 2017 - 15:02:14 EST

From: Frank Kunz <xxxxxmichl@xxxxxxxxxxxxxx>

The Einstein A20 board is a Allwinner A20 based board with a credit card
form factor.

Features:
- Allwinner A20 SoC
- DDR3 1GB RAM
- 8GiB eMMC
- AP6210 wifi/Bluetooth
- RTC
- Micro USB-OTG connector
- UART0 debugging port
- 200 pins stamp hole package

Signed-off-by: Frank Kunz <xxxxxmichl@xxxxxxxxxxxxxx>
---
arch/arm/boot/dts/Makefile | 1 +
arch/arm/boot/dts/sun7i-a20-cubietech-einstein.dts | 198 +++++++++++++++++++++
2 files changed, 199 insertions(+)

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index faf46abaa4a2..7bf08aa4e8cb 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -878,6 +878,7 @@ dtb-$(CONFIG_MACH_SUN7I) += \
sun7i-a20-bananapro.dtb \
sun7i-a20-cubieboard2.dtb \
sun7i-a20-cubietruck.dtb \
+ sun7i-a20-cubietech-einstein.dtb \
sun7i-a20-hummingbird.dtb \
sun7i-a20-itead-ibox.dtb \
sun7i-a20-i12-tvbox.dtb \
diff --git a/arch/arm/boot/dts/sun7i-a20-cubietech-einstein.dts b/arch/arm/boot/dts/sun7i-a20-cubietech-einstein.dts
new file mode 100644
index 000000000000..04422c6f03b8
--- /dev/null
+++ b/arch/arm/boot/dts/sun7i-a20-cubietech-einstein.dts
@@ -0,0 +1,198 @@
+/*
+ * Copyright 2017 Frank Kunz
+ *
+ * Frank Kunz <xxxxxmichl@xxxxxxxxxxxxxx>
+ *
+ * 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 = "Cubietech Einstein A20";
+ compatible = "cubietech,einstein-a20", "allwinner,sun7i-a20";
+
+ aliases {
+ serial0 = &uart0;
+ };
+
+ chosen {
+ stdout-path = "serial0:115200n8";
+ };
+
+ mmc3_pwrseq: mmc3_pwrseq {
+ compatible = "mmc-pwrseq-simple";
+ reset-gpios = <&pio 7 9 GPIO_ACTIVE_LOW>; /* PH9 WIFI-SHDN */
+ };
+};
+
+&cpu0 {
+ cpu-supply = <&reg_dcdc2>;
+};
+
+&ehci0 {
+ status = "okay";
+};
+
+&i2c0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c0_pins_a>;
+ status = "okay";
+
+ axp209: pmic@34 {
+ reg = <0x34>;
+ interrupt-parent = <&nmi_intc>;
+ interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
+ };
+};
+
+&mmc2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&mmc2_pins_a>;
+ vmmc-supply = <&reg_vcc3v0>;
+ bus-width = <4>;
+ non-removable;
+ status = "okay";
+};
+
+&mmc3 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&mmc3_pins_a>;
+ vmmc-supply = <&reg_vcc3v0>;
+ mmc-pwrseq = <&mmc3_pwrseq>;
+ bus-width = <4>;
+ non-removable;
+ wakeup-source;
+ status = "okay";
+
+ brcmf: wifi@1 {
+ reg = <1>;
+ compatible = "brcm,bcm4329-fmac";
+ interrupt-parent = <&pio>;
+ interrupts = <7 10 IRQ_TYPE_LEVEL_LOW>;
+ interrupt-names = "host-wake";
+ };
+};
+
+&ohci0 {
+ status = "okay";
+};
+
+&otg_sram {
+ status = "okay";
+};
+
+&pio {
+ usb0_id_detect_pin: usb0_id_detect_pin@0 {
+ pins = "PH4";
+ function = "gpio_in";
+ bias-pull-up;
+ };
+
+ mmc3_pwrseq_pin_ea20: mmc3_pwrseq_pin@0 {
+ pins = "PH9";
+ function = "gpio_out";
+ };
+};
+
+#include "axp209.dtsi"
+
+&usb_power_supply {
+ status = "okay";
+};
+
+&reg_dcdc2 {
+ regulator-always-on;
+ regulator-min-microvolt = <1000000>;
+ regulator-max-microvolt = <1450000>;
+ 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_usb1_vbus {
+ status = "okay";
+};
+
+&reg_usb2_vbus {
+ status = "okay";
+};
+
+&uart0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart0_pins_a>;
+ status = "okay";
+};
+
+&usb_otg {
+ dr_mode = "otg";
+ status = "okay";
+};
+
+&usbphy {
+ pinctrl-names = "default";
+ pinctrl-0 = <&usb0_id_detect_pin>;
+ usb0_id_det-gpio = <&pio 7 4 GPIO_ACTIVE_HIGH>; /* PH4 */
+ usb1_vbus-supply = <&reg_usb1_vbus>;
+ usb2_vbus-supply = <&reg_usb2_vbus>;
+ status = "okay";
+};
--
2.14.2