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Date:   Thu,  2 Nov 2017 20:01:18 +0100
From:   Frank Kunz <mailinglists@...z-im-inter.net>
To:     devicetree@...r.kernel.org, mark.rutland@....com,
        maxime.ripard@...e-electrons.com, wens@...e.org
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        robh+dt@...nel.org, Frank Kunz <xxxxxmichl@...glemail.com>
Subject: [PATCH v2] ARM: sun7i: Add Cubietech Einstein A20 board device-tree

From: Frank Kunz <xxxxxmichl@...glemail.com>

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@...glemail.com>
---
 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@...glemail.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 = "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

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