[PATCH 1/3] ARM: dts: sunxi: h3/h5: add missing uart2 rts/cts pins

[PATCH 1/3] ARM: dts: sunxi: h3/h5: add missing uart2 rts/cts pins

[Karl Palsson]

uart1 and uart3 had existing pin definitions for the rts/cts pairs.
Add definitions for uart2 as well.

Signed-off-by: Karl Palsson <karlp@tweak.net.au>
---
 arch/arm/boot/dts/sunxi-h3-h5.dtsi | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm/boot/dts/sunxi-h3-h5.dtsi b/arch/arm/boot/dts/sunxi-h3-h5.dtsi
index a4c757c0b741..38d3deefa0e3 100644
--- a/arch/arm/boot/dts/sunxi-h3-h5.dtsi
+++ b/arch/arm/boot/dts/sunxi-h3-h5.dtsi
@@ -472,6 +472,11 @@
 				function = "uart2";
 			};
 
+			uart2_rts_cts_pins: uart2_rts_cts {
+				pins = "PA2", "PA3";
+				function = "uart2";
+			};
+
 			uart3_pins: uart3 {
 				pins = "PA13", "PA14";
 				function = "uart3";
-- 
2.14.5

[PATCH 2/3] ARM: dts: sun8i: add FriendlyARM NanoPi Duo2

[Karl Palsson]

This is an Allwinner H3 based board, with 512MB ram, a USB OTG port,
microsd slot, an onboard AP6212A wifi/bluetooth module, and a CSI
connector.

Full details and schematic available from vendor:
http://wiki.friendlyarm.com/wiki/index.php/NanoPi_Duo2

Signed-off-by: Karl Palsson <karlp@tweak.net.au>
---
 arch/arm/boot/dts/Makefile                 |   1 +
 arch/arm/boot/dts/sun8i-h3-nanopi-duo2.dts | 148 +++++++++++++++++++++++++++++
 2 files changed, 149 insertions(+)
 create mode 100644 arch/arm/boot/dts/sun8i-h3-nanopi-duo2.dts

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 78551c4375d5..7f296bfea94a 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -1063,6 +1063,7 @@ dtb-$(CONFIG_MACH_SUN8I) += \
 	sun8i-h3-beelink-x2.dtb \
 	sun8i-h3-libretech-all-h3-cc.dtb \
 	sun8i-h3-mapleboard-mp130.dtb \
+	sun8i-h3-nanopi-duo2.dtb \
 	sun8i-h3-nanopi-m1.dtb	\
 	sun8i-h3-nanopi-m1-plus.dtb \
 	sun8i-h3-nanopi-neo.dtb \
diff --git a/arch/arm/boot/dts/sun8i-h3-nanopi-duo2.dts b/arch/arm/boot/dts/sun8i-h3-nanopi-duo2.dts
new file mode 100644
index 000000000000..07d2f1bebd56
--- /dev/null
+++ b/arch/arm/boot/dts/sun8i-h3-nanopi-duo2.dts
@@ -0,0 +1,148 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (C) 2018 Karl Palsson <karlp@tweak.net.au>
+ */
+
+/dts-v1/;
+#include "sun8i-h3.dtsi"
+#include "sunxi-common-regulators.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	model = "FriendlyARM NanoPi Duo2";
+	compatible = "friendlyarm,nanopi-duo2", "allwinner,sun8i-h3";
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		status {
+			label = "nanopi:green:status";
+			gpios = <&pio 0 10 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "heartbeat";
+		};
+
+		pwr {
+			label = "nanopi:red:pwr";
+			gpios = <&r_pio 0 10 GPIO_ACTIVE_HIGH>;
+			default-state = "on";
+		};
+	};
+
+	r_gpio_keys {
+		compatible = "gpio-keys";
+		pinctrl-names = "default";
+		pinctrl-0 = <&sw_r_npi>;
+
+		k1 {
+			label = "k1";
+			linux,code = <BTN_0>;
+			gpios = <&r_pio 0 3 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	reg_vdd_cpux: vdd-cpux-regulator {
+		compatible = "regulator-gpio";
+		regulator-name = "vdd-cpux";
+		regulator-boot-on;
+		regulator-always-on;
+		regulator-min-microvolt = <1100000>;
+		regulator-max-microvolt = <1300000>;
+		regulator-ramp-delay = <50>; /* 4ms */
+
+		gpios = <&r_pio 0 6 GPIO_ACTIVE_HIGH>; /* PL6 */
+		enable-active-high;
+		gpios-states = <0x1>;
+		states = <1100000 0x0
+			  1300000 0x1>;
+	};
+
+	wifi_pwrseq: wifi_pwrseq {
+		compatible = "mmc-pwrseq-simple";
+		reset-gpios = <&r_pio 0 7 GPIO_ACTIVE_LOW>; /* PL7 */
+	};
+
+};
+
+&cpu0 {
+	cpu-supply = <&reg_vdd_cpux>;
+};
+
+&usb_otg {
+	status = "okay";
+	dr_mode = "otg";
+};
+
+&ehci0 {
+	status = "okay";
+};
+
+&ohci0 {
+	status = "okay";
+};
+
+&reg_usb0_vbus {
+	gpio = <&r_pio 0 2 GPIO_ACTIVE_HIGH>; /* PL2 */
+	status = "okay";
+};
+
+&r_pio {
+	sw_r_npi: key_pins {
+		pins = "PL3";
+		function = "gpio_in";
+	};
+};
+
+&usbphy {
+	usb0_id_det-gpios = <&pio 6 12 GPIO_ACTIVE_HIGH>; /* PG12 */
+	usb0_vbus-supply = <&reg_usb0_vbus>;
+	status = "okay";
+};
+
+&mmc0 {
+	bus-width = <4>;
+	cd-gpios = <&pio 5 6 GPIO_ACTIVE_LOW>;
+	status = "okay";
+	vmmc-supply = <&reg_vcc3v3>;
+};
+
+&mmc1 {
+	vmmc-supply = <&reg_vcc3v3>;
+	vqmmc-supply = <&reg_vcc3v3>;
+	mmc-pwrseq = <&wifi_pwrseq>;
+	bus-width = <4>;
+	non-removable;
+	status = "okay";
+
+	sdio_wifi: sdio_wifi@1 {
+		reg = <1>;
+		compatible = "brcm,bcm4329-fmac";
+		interrupt-parent = <&pio>;
+		interrupts = <6 10 IRQ_TYPE_LEVEL_LOW>; /* PG10 / EINT10 */
+		interrupt-names = "host-wake";
+	};
+};
+
+&uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_pins_a>;
+	status = "okay";
+};
+
+&uart2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart2_pins>, <&uart2_rts_cts_pins>;
+	uart-has-rtscts;
+	status = "okay";
+
+	/* bluetooth goes here */
+};
-- 
2.14.5

[PATCH 3/3] ARM: dts: sun8i: add FriendlyARM NanoPi Duo2-IoT Box

[Karl Palsson]

The IoT-Box is a dock for the NanoPi Duo2, adding two USB host ports, a
10/100 ethernet port, a variety of pin headers for i2c and uarts, and a
quad band 2G GSM module, a SIM800C.

Full documentation and schematics available from vendor:
http://wiki.friendlyarm.com/wiki/index.php/NanoPi_Duo2_IoT-Box

Signed-off-by: Karl Palsson <karlp@tweak.net.au>
---
 arch/arm/boot/dts/Makefile                        |  1 +
 arch/arm/boot/dts/sun8i-h3-nanopi-duo2-iotbox.dts | 45 +++++++++++++++++++++++
 2 files changed, 46 insertions(+)
 create mode 100644 arch/arm/boot/dts/sun8i-h3-nanopi-duo2-iotbox.dts

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 7f296bfea94a..b62d84639c7a 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -1064,6 +1064,7 @@ dtb-$(CONFIG_MACH_SUN8I) += \
 	sun8i-h3-libretech-all-h3-cc.dtb \
 	sun8i-h3-mapleboard-mp130.dtb \
 	sun8i-h3-nanopi-duo2.dtb \
+	sun8i-h3-nanopi-duo2-iotbox.dtb \
 	sun8i-h3-nanopi-m1.dtb	\
 	sun8i-h3-nanopi-m1-plus.dtb \
 	sun8i-h3-nanopi-neo.dtb \
diff --git a/arch/arm/boot/dts/sun8i-h3-nanopi-duo2-iotbox.dts b/arch/arm/boot/dts/sun8i-h3-nanopi-duo2-iotbox.dts
new file mode 100644
index 000000000000..4e7fae4046a8
--- /dev/null
+++ b/arch/arm/boot/dts/sun8i-h3-nanopi-duo2-iotbox.dts
@@ -0,0 +1,45 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (C) 2018 Karl Palsson <karlp@tweak.net.au>
+ */
+
+#include "sun8i-h3-nanopi-duo2.dts"
+
+/ {
+	model = "FriendlyARM NanoPi Duo2 IoT Box";
+	compatible = "friendlyarm,nanopi-duo2-iotbox",
+		"friendlyarm,nanopi-duo2",
+		"allwinner,sun8i-h3";
+};
+
+&ehci2 {
+	status = "okay";
+};
+
+&ehci3 {
+	status = "okay";
+};
+
+&ohci2 {
+	status = "okay";
+};
+
+&ohci3 {
+	status = "okay";
+};
+
+&emac {
+	phy-handle = <&int_mii_phy>;
+	phy-mode = "mii";
+	allwinner,leds-active-low;
+	status = "okay";
+};
+
+/* Not addressed, SIM800C module on uart3 */
+&uart3 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart3_pins>, <&uart3_rts_cts_pins>;
+	uart-has-rtscts;
+	status = "okay";
+};
+
-- 
2.14.5

Re: [PATCH 2/3] ARM: dts: sun8i: add FriendlyARM NanoPi Duo2

[Maxime Ripard]

Hi,

On Tue, Dec 18, 2018 at 09:24:56PM +0000, Karl Palsson wrote:
> This is an Allwinner H3 based board, with 512MB ram, a USB OTG port,
> microsd slot, an onboard AP6212A wifi/bluetooth module, and a CSI
> connector.
> 
> Full details and schematic available from vendor:
> http://wiki.friendlyarm.com/wiki/index.php/NanoPi_Duo2
> 
> Signed-off-by: Karl Palsson <karlp@tweak.net.au>
> ---
>  arch/arm/boot/dts/Makefile                 |   1 +
>  arch/arm/boot/dts/sun8i-h3-nanopi-duo2.dts | 148 +++++++++++++++++++++++++++++
>  2 files changed, 149 insertions(+)
>  create mode 100644 arch/arm/boot/dts/sun8i-h3-nanopi-duo2.dts
> 
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index 78551c4375d5..7f296bfea94a 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -1063,6 +1063,7 @@ dtb-$(CONFIG_MACH_SUN8I) += \
>  	sun8i-h3-beelink-x2.dtb \
>  	sun8i-h3-libretech-all-h3-cc.dtb \
>  	sun8i-h3-mapleboard-mp130.dtb \
> +	sun8i-h3-nanopi-duo2.dtb \
>  	sun8i-h3-nanopi-m1.dtb	\
>  	sun8i-h3-nanopi-m1-plus.dtb \
>  	sun8i-h3-nanopi-neo.dtb \
> diff --git a/arch/arm/boot/dts/sun8i-h3-nanopi-duo2.dts b/arch/arm/boot/dts/sun8i-h3-nanopi-duo2.dts
> new file mode 100644
> index 000000000000..07d2f1bebd56
> --- /dev/null
> +++ b/arch/arm/boot/dts/sun8i-h3-nanopi-duo2.dts
> @@ -0,0 +1,148 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +/*
> + * Copyright (C) 2018 Karl Palsson <karlp@tweak.net.au>
> + */
> +
> +/dts-v1/;
> +#include "sun8i-h3.dtsi"
> +#include "sunxi-common-regulators.dtsi"
> +
> +#include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/input/input.h>
> +
> +/ {
> +	model = "FriendlyARM NanoPi Duo2";
> +	compatible = "friendlyarm,nanopi-duo2", "allwinner,sun8i-h3";
> +
> +	aliases {
> +		serial0 = &uart0;
> +	};
> +
> +	chosen {
> +		stdout-path = "serial0:115200n8";
> +	};
> +
> +	leds {
> +		compatible = "gpio-leds";
> +
> +		status {
> +			label = "nanopi:green:status";
> +			gpios = <&pio 0 10 GPIO_ACTIVE_HIGH>;
> +			linux,default-trigger = "heartbeat";
> +		};
> +
> +		pwr {
> +			label = "nanopi:red:pwr";
> +			gpios = <&r_pio 0 10 GPIO_ACTIVE_HIGH>;
> +			default-state = "on";
> +		};
> +	};
> +
> +	r_gpio_keys {
> +		compatible = "gpio-keys";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&sw_r_npi>;
> +
> +		k1 {
> +			label = "k1";
> +			linux,code = <BTN_0>;
> +			gpios = <&r_pio 0 3 GPIO_ACTIVE_LOW>;
> +		};
> +	};
> +
> +	reg_vdd_cpux: vdd-cpux-regulator {
> +		compatible = "regulator-gpio";
> +		regulator-name = "vdd-cpux";
> +		regulator-boot-on;
> +		regulator-always-on;
> +		regulator-min-microvolt = <1100000>;
> +		regulator-max-microvolt = <1300000>;
> +		regulator-ramp-delay = <50>; /* 4ms */
> +
> +		gpios = <&r_pio 0 6 GPIO_ACTIVE_HIGH>; /* PL6 */
> +		enable-active-high;
> +		gpios-states = <0x1>;
> +		states = <1100000 0x0
> +			  1300000 0x1>;
> +	};
> +
> +	wifi_pwrseq: wifi_pwrseq {
> +		compatible = "mmc-pwrseq-simple";
> +		reset-gpios = <&r_pio 0 7 GPIO_ACTIVE_LOW>; /* PL7 */
> +	};
> +
> +};
> +
> +&cpu0 {
> +	cpu-supply = <&reg_vdd_cpux>;
> +};
> +
> +&usb_otg {
> +	status = "okay";
> +	dr_mode = "otg";
> +};
> +
> +&ehci0 {
> +	status = "okay";
> +};
> +
> +&ohci0 {
> +	status = "okay";
> +};
> +
> +&reg_usb0_vbus {
> +	gpio = <&r_pio 0 2 GPIO_ACTIVE_HIGH>; /* PL2 */
> +	status = "okay";
> +};
> +
> +&r_pio {
> +	sw_r_npi: key_pins {
> +		pins = "PL3";
> +		function = "gpio_in";
> +	};
> +};

This node isn't needed you can just remove it

> +&usbphy {
> +	usb0_id_det-gpios = <&pio 6 12 GPIO_ACTIVE_HIGH>; /* PG12 */
> +	usb0_vbus-supply = <&reg_usb0_vbus>;
> +	status = "okay";
> +};
> +
> +&mmc0 {
> +	bus-width = <4>;
> +	cd-gpios = <&pio 5 6 GPIO_ACTIVE_LOW>;
> +	status = "okay";
> +	vmmc-supply = <&reg_vcc3v3>;
> +};
> +
> +&mmc1 {
> +	vmmc-supply = <&reg_vcc3v3>;
> +	vqmmc-supply = <&reg_vcc3v3>;
> +	mmc-pwrseq = <&wifi_pwrseq>;
> +	bus-width = <4>;
> +	non-removable;
> +	status = "okay";
> +
> +	sdio_wifi: sdio_wifi@1 {
> +		reg = <1>;
> +		compatible = "brcm,bcm4329-fmac";
> +		interrupt-parent = <&pio>;
> +		interrupts = <6 10 IRQ_TYPE_LEVEL_LOW>; /* PG10 / EINT10 */
> +		interrupt-names = "host-wake";
> +	};
> +};
> +
> +&uart0 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&uart0_pins_a>;
> +	status = "okay";
> +};
> +
> +&uart2 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&uart2_pins>, <&uart2_rts_cts_pins>;
> +	uart-has-rtscts;
> +	status = "okay";
> +
> +	/* bluetooth goes here */

The patches for the bluetooth support using serdev by Chen-Yu just got
in:
http://lists.infradead.org/pipermail/linux-arm-kernel/2018-December/621207.html

Ideally, you should put a dt node for the bluetooth part here.

Thanks!
Maxime

-- 
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

Re: [PATCH 3/3] ARM: dts: sun8i: add FriendlyARM NanoPi Duo2-IoT Box

[Maxime Ripard]

[-- Attachment #1: Type: text/plain, Size: 1633 bytes --]

On Fri, Nov 01, 2019 at 09:55:41AM -0000, Karl Palsson wrote:
>
> Maxime Ripard <mripard@kernel.org> wrote:
> > On Thu, Oct 31, 2019 at 11:12:16PM +0000, Karl Palsson wrote:
> > > The IoT-Box is a dock for the NanoPi Duo2, adding two USB host ports, a
> > > 10/100 ethernet port, a variety of pin headers for i2c and uarts, and a
> > > quad band 2G GSM module, a SIM800C.
> > >
> > > Full documentation and schematics available from vendor:
> > > http://wiki.friendlyarm.com/wiki/index.php/NanoPi_Duo2_IoT-Box
> > >
> > > Signed-off-by: Karl Palsson <karlp@tweak.net.au>
> >
> > It seems like it's something that can be connected /
> > disconnected at will?
> >
> > If so, then it should be an overlay, not a full blown DTS.
>
> Fine with me, I wasn't sure on the best procedure for things like
> this. It's not something you plug / unplug at run time, you'd
> tend to just always have this, or not. Is it best to just have
> user space distributions handle selecting the overlay then? and
> they maintain the overlay file?

Another option would be to do it at the bootloader level, based on a
discovery mechanism (eeproms storing data / the overlay itself, the
presence of some devices on buses that you can probe (i2c, mmc, etc).

> I'd considered overlays something for _per user_ customization,
> but I'm perfectly happy if it it's intended to be used for per
> product customization too if that's the right method.

Overlays are for dynamic configuration. The user customization is one
of its use case, but add-on boards are another (being used by the RPi
and the Beaglebones), just like FPGA configuration for example.

Maxime

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Re: [PATCH 3/3] ARM: dts: sun8i: add FriendlyARM NanoPi Duo2-IoT Box

[Karl Palsson]

[-- Attachment #1.1: Type: text/plain, Size: 1129 bytes --]


Maxime Ripard <mripard@kernel.org> wrote:
> On Thu, Oct 31, 2019 at 11:12:16PM +0000, Karl Palsson wrote:
> > The IoT-Box is a dock for the NanoPi Duo2, adding two USB host ports, a
> > 10/100 ethernet port, a variety of pin headers for i2c and uarts, and a
> > quad band 2G GSM module, a SIM800C.
> >
> > Full documentation and schematics available from vendor:
> > http://wiki.friendlyarm.com/wiki/index.php/NanoPi_Duo2_IoT-Box
> >
> > Signed-off-by: Karl Palsson <karlp@tweak.net.au>
> 
> It seems like it's something that can be connected /
> disconnected at will?
> 
> If so, then it should be an overlay, not a full blown DTS.

Fine with me, I wasn't sure on the best procedure for things like
this. It's not something you plug / unplug at run time, you'd
tend to just always have this, or not. Is it best to just have
user space distributions handle selecting the overlay then? and
they maintain the overlay file?

I'd considered overlays something for _per user_ customization,
but I'm perfectly happy if it it's intended to be used for per
product customization too if that's the right method.

Sincerely,
Karl Palsson

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Re: [PATCH 3/3] ARM: dts: sun8i: add FriendlyARM NanoPi Duo2-IoT Box

[Maxime Ripard]

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On Thu, Oct 31, 2019 at 11:12:16PM +0000, Karl Palsson wrote:
> The IoT-Box is a dock for the NanoPi Duo2, adding two USB host ports, a
> 10/100 ethernet port, a variety of pin headers for i2c and uarts, and a
> quad band 2G GSM module, a SIM800C.
>
> Full documentation and schematics available from vendor:
> http://wiki.friendlyarm.com/wiki/index.php/NanoPi_Duo2_IoT-Box
>
> Signed-off-by: Karl Palsson <karlp@tweak.net.au>

It seems like it's something that can be connected / disconnected at
will?

If so, then it should be an overlay, not a full blown DTS.

Maxime

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Re: [PATCH 3/3] ARM: dts: sun8i: add FriendlyARM NanoPi Duo2-IoT Box

[Chen-Yu Tsai]

On Fri, Nov 1, 2019 at 7:12 AM Karl Palsson <karlp@tweak.net.au> wrote:
>
> The IoT-Box is a dock for the NanoPi Duo2, adding two USB host ports, a
> 10/100 ethernet port, a variety of pin headers for i2c and uarts, and a
> quad band 2G GSM module, a SIM800C.
>
> Full documentation and schematics available from vendor:
> http://wiki.friendlyarm.com/wiki/index.php/NanoPi_Duo2_IoT-Box
>
> Signed-off-by: Karl Palsson <karlp@tweak.net.au>

Acked-by: Chen-Yu Tsai <wens@csie.org>

[PATCH 3/3] ARM: dts: sun8i: add FriendlyARM NanoPi Duo2-IoT Box

[Karl Palsson]

The IoT-Box is a dock for the NanoPi Duo2, adding two USB host ports, a
10/100 ethernet port, a variety of pin headers for i2c and uarts, and a
quad band 2G GSM module, a SIM800C.

Full documentation and schematics available from vendor:
http://wiki.friendlyarm.com/wiki/index.php/NanoPi_Duo2_IoT-Box

Signed-off-by: Karl Palsson <karlp@tweak.net.au>
---
 arch/arm/boot/dts/Makefile                    |  1 +
 .../boot/dts/sun8i-h3-nanopi-duo2-iotbox.dts  | 45 +++++++++++++++++++
 2 files changed, 46 insertions(+)
 create mode 100644 arch/arm/boot/dts/sun8i-h3-nanopi-duo2-iotbox.dts

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index d8bf02abcda1..d605766441dd 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -1097,6 +1097,7 @@ dtb-$(CONFIG_MACH_SUN8I) += \
 	sun8i-h3-libretech-all-h3-cc.dtb \
 	sun8i-h3-mapleboard-mp130.dtb \
 	sun8i-h3-nanopi-duo2.dtb \
+	sun8i-h3-nanopi-duo2-iotbox.dtb \
 	sun8i-h3-nanopi-m1.dtb	\
 	sun8i-h3-nanopi-m1-plus.dtb \
 	sun8i-h3-nanopi-neo.dtb \
diff --git a/arch/arm/boot/dts/sun8i-h3-nanopi-duo2-iotbox.dts b/arch/arm/boot/dts/sun8i-h3-nanopi-duo2-iotbox.dts
new file mode 100644
index 000000000000..d4f347192199
--- /dev/null
+++ b/arch/arm/boot/dts/sun8i-h3-nanopi-duo2-iotbox.dts
@@ -0,0 +1,45 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (C) 2019 Karl Palsson <karlp@tweak.net.au>
+ */
+
+#include "sun8i-h3-nanopi-duo2.dts"
+
+/ {
+	model = "FriendlyARM NanoPi Duo2 IoT Box";
+	compatible = "friendlyarm,nanopi-duo2-iotbox",
+		"friendlyarm,nanopi-duo2",
+		"allwinner,sun8i-h3";
+};
+
+&ehci2 {
+	status = "okay";
+};
+
+&ehci3 {
+	status = "okay";
+};
+
+&ohci2 {
+	status = "okay";
+};
+
+&ohci3 {
+	status = "okay";
+};
+
+&emac {
+	phy-handle = <&int_mii_phy>;
+	phy-mode = "mii";
+	allwinner,leds-active-low;
+	status = "okay";
+};
+
+/* Not addressed, SIM800C module on uart3 */
+&uart3 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart3_pins>, <&uart3_rts_cts_pins>;
+	uart-has-rtscts;
+	status = "okay";
+};
+
-- 
2.20.1