bcm968360bg: add initial support

This add the initial support of the broadcom reference
board bcm968360bg with a bcm68360 SoC.

This board has 512 MB of RAM, 256 MB of flash (nand),
2 USB port, 1 UART, and 4 ethernet ports.

Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>

3 files changed, 172 insertions, 0 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 94a649f933..9608f54804 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1834,6 +1834,7 @@ source "board/armltd/vexpress64/Kconfig"
 source "board/broadcom/bcm23550_w1d/Kconfig"
 source "board/broadcom/bcm28155_ap/Kconfig"
 source "board/broadcom/bcm963158/Kconfig"
+source "board/broadcom/bcm968360bg/Kconfig"
 source "board/broadcom/bcm968580xref/Kconfig"
 source "board/broadcom/bcmcygnus/Kconfig"
 source "board/broadcom/bcmnsp/Kconfig"
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 38d0c2a92c..b48b05fd24 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -859,6 +859,9 @@ dtb-$(CONFIG_ARCH_BCM283X) += \
 dtb-$(CONFIG_ARCH_BCM63158) += \
 	bcm963158.dtb
 
+dtb-$(CONFIG_ARCH_BCM68360) += \
+	bcm968360bg.dtb
+
 dtb-$(CONFIG_ARCH_BCM6858) += \
 	bcm968580xref.dtb
 
diff --git a/arch/arm/dts/bcm968360bg.dts b/arch/arm/dts/bcm968360bg.dts
new file mode 100644
index 0000000000..c060294cc9
--- /dev/null
+++ b/arch/arm/dts/bcm968360bg.dts
@@ -0,0 +1,168 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2020 Philippe Reynes <philippe.reynes@softathome.com>
+ */
+
+/dts-v1/;
+
+#include "bcm68360.dtsi"
+
+/ {
+	model = "Broadcom bcm68360bg";
+	compatible = "broadcom,bcm68360bg", "brcm,bcm68360";
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory {
+		device_type = "memory";
+		reg = <0x0 0x0 0x0 0x20000000>;
+	};
+};
+
+&uart0 {
+	u-boot,dm-pre-reloc;
+	status = "okay";
+};
+
+&gpio0 {
+	status = "okay";
+};
+
+&gpio1 {
+	status = "okay";
+};
+
+&gpio2 {
+	status = "okay";
+};
+
+&gpio3 {
+	status = "okay";
+};
+
+&gpio4 {
+	status = "okay";
+};
+
+&gpio5 {
+	status = "okay";
+};
+
+&gpio6 {
+	status = "okay";
+};
+
+&gpio7 {
+	status = "okay";
+};
+
+&nand {
+	status = "okay";
+	write-protect = <0>;
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	nandcs@0 {
+		compatible = "brcm,nandcs";
+		reg = <0>;
+		nand-ecc-strength = <4>;
+		nand-ecc-step-size = <512>;
+		brcm,nand-oob-sector-size = <16>;
+	};
+};
+
+&leds {
+	status = "okay";
+	#address-cells = <1>;
+	#size-cells = <0>;
+	brcm,serial-led-en-pol;
+	brcm,serial-led-data-ppol;
+
+	led@0 {
+		reg = <0>;
+		label = "red:alarm";
+	};
+
+	led@1 {
+		reg = <1>;
+		label = "green:wan";
+	};
+
+	led@2 {
+		reg = <2>;
+		label = "green:wps";
+	};
+
+	led@12 {
+		reg = <12>;
+		label = "orange:enet5.1";
+	};
+
+	led@13 {
+		reg = <13>;
+		label = "green:enet5.2";
+	};
+
+	led@14 {
+		reg = <14>;
+		label = "orange:enet5.2";
+	};
+
+	led@15 {
+		reg = <15>;
+		label = "green:enet5.1";
+	};
+
+	led@16 {
+		reg = <16>;
+		label = "green:usb1";
+	};
+
+	led@17 {
+		reg = <17>;
+		label = "green:voip1";
+	};
+
+	led@18 {
+		reg = <18>;
+		label = "green:voip2";
+	};
+
+	led@19 {
+		reg = <19>;
+		label = "green:enet6";
+	};
+
+	led@20 {
+		reg = <20>;
+		label = "orange:enet6";
+	};
+
+	led@21 {
+		reg = <21>;
+		label = "green:inet";
+	};
+
+	led@22 {
+		reg = <22>;
+		label = "green:usb2";
+	};
+};
+
+&hsspi {
+	status = "okay";
+
+	flash: mt25@0 {
+		compatible = "jedec,spi-nor";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		reg = <0>;
+		spi-max-frequency = <25000000>;
+	};
+};