Re: [PATCH] ARM: dts: imx6ulz: add support for USB armory Mk II

From: Andrej Rosano <redacted>

Add support for F-Secure USB armory Mk II board, an open source
flash-drive sized computer based on NXP i.MX6ULZ SoC.

https://github.com/f-secure-foundry/usbarmory

Signed-off-by: Andrej Rosano <redacted>
---
 .../devicetree/bindings/arm/fsl.yaml          |   3 +-
 arch/arm/boot/dts/Makefile                    |   3 +-
 arch/arm/boot/dts/imx6ulz-usbarmory.dts       | 238 ++++++++++++++++++
 3 files changed, 242 insertions(+), 2 deletions(-)
 create mode 100644 arch/arm/boot/dts/imx6ulz-usbarmory.dts

diff --git a/Documentation/devicetree/bindings/arm/fsl.yaml b/Documentation/devicetree/bindings/arm/fsl.yaml
index 1c827c1954dc..a11d10a22b64 100644
--- a/Documentation/devicetree/bindings/arm/fsl.yaml
+++ b/Documentation/devicetree/bindings/arm/fsl.yaml

@@ -595,7 +595,8 @@ properties:
       - description: i.MX6ULZ based Boards
         items:
           - enum:
-              - fsl,imx6ulz-14x14-evk     # i.MX6 ULZ 14x14 EVK Board
+              - fsl,imx6ulz-14x14-evk         # i.MX6 ULZ 14x14 EVK Board
+              - inversepath,imx6ulz-usbarmory # F-Secure USB armory Mk II
           - const: fsl,imx6ull # This seems odd. Should be last?
           - const: fsl,imx6ulz
 

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 863347b6b65e..6fd2b8f55255 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile

@@ -655,7 +655,8 @@ dtb-$(CONFIG_SOC_IMX6UL) += \
 	imx6ull-phytec-segin-ff-rdk-nand.dtb \
 	imx6ull-phytec-segin-ff-rdk-emmc.dtb \
 	imx6ull-phytec-segin-lc-rdk-nand.dtb \
-	imx6ulz-14x14-evk.dtb
+	imx6ulz-14x14-evk.dtb \
+	imx6ulz-usbarmory.dtb
 dtb-$(CONFIG_SOC_IMX7D) += \
 	imx7d-cl-som-imx7.dtb \
 	imx7d-colibri-aster.dtb \

diff --git a/arch/arm/boot/dts/imx6ulz-usbarmory.dts b/arch/arm/boot/dts/imx6ulz-usbarmory.dts
new file mode 100644
index 000000000000..6262d30bcb9c
--- /dev/null
+++ b/arch/arm/boot/dts/imx6ulz-usbarmory.dts

@@ -0,0 +1,238 @@
+/*
+ * USB armory Mk II device tree file
+ * https://github.com/f-secure-foundry/usbarmory
+ *
+ * Copyright (C) 2020, F-Secure Corporation
+ * Andrej Rosano <andrej.rosano@f-secure.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 "imx6ulz.dtsi"

+
+/ {
+	model = "F-Secure USB armory Mk II";
+	compatible = "inversepath,imx6ulz-usbarmory-mkII", "fsl,imx6ull", "fsl,imx6ulz";
+
+	chosen {
+		stdout-path = &uart2;
+	};
+
+	memory {

+		device_type = "memory";
+		reg = <0x80000000 0x20000000>;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_led>;
+
+		led-white {
+			label = "LED_WHITE";
+			gpios = <&gpio4 21 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "heartbeat";
+		};
+
+		led-blue {
+			label = "LED_BLUE";
+			gpios = <&gpio4 22 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	regulators {
+		compatible = "simple-bus";