ARM: dts: BCM5301X: Add basic DT for Phicomm K3

This router has BCM4709C0 SoC, 128 MiB NAND flash (MX30LF1G18AC-TI),
512 MiB memory and 3 x LAN and 1 x WAN ports. WiFi chips are
BCM4366C0 x 2. The router has a small LCD and 3 capactive keys driven by
a PIC microcontroller, which is in turn wired to UART1 of main board.

Signed-off-by: Hao Dong <[e-mail]>
[rmilecki: drop chosen { }, fix whitespaces, update commit message]
Signed-off-by: Rafał Miłecki <[e-mail]>
Signed-off-by: Florian Fainelli <[e-mail]>

arch/arm/boot/dts/Makefile

···
 	bcm47094-luxul-xwr-3100.dtb \
 	bcm47094-luxul-xwr-3150-v1.dtb \
 	bcm47094-netgear-r8500.dtb \
+	bcm47094-phicomm-k3.dtb \
 	bcm94708.dtb \
 	bcm94709.dtb \
 	bcm953012er.dtb \

arch/arm/boot/dts/bcm47094-phicomm-k3.dts

···
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Copyright (C) 2017 Hamster Tian <[e-mail]>
+ * Copyright (C) 2019 Hao Dong <[e-mail]>
+ */
+
+/dts-v1/;
+
+#include "bcm47094.dtsi"
+#include "bcm5301x-nand-cs0-bch4.dtsi"
+
+/ {
+	compatible = "phicomm,k3", "brcm,bcm47094", "brcm,bcm4708";
+	model = "Phicomm K3";
+
+	memory {
+		reg = <0x00000000 0x08000000
+		       0x88000000 0x18000000>;
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		restart {
+			label = "Reset";
+			linux,code = <KEY_RESTART>;
+			gpios = <&chipcommon 17 GPIO_ACTIVE_LOW>;
+		};
+	};
+};
+
+&uart1 {
+	status = "okay";
+};
+
+&usb3_phy {
+	status = "okay";
+};
+
+&nandcs {
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		partition@0 {
+			label = "boot";
+			reg = <0x0000000 0x0080000>;
+			read-only;
+		};
+
+		partition@80000 {
+			label = "nvram";
+			reg = <0x0080000 0x0100000>;
+		};
+
+		partition@180000{
+			label = "phicomm";
+			reg = <0x0180000 0x0280000>;
+			read-only;
+		};
+
+		partition@400000 {
+			label = "firmware";
+			reg = <0x0400000 0x7C00000>;
+			compatible = "brcm,trx";
+		};
+	};
+};