ARM: dts: NSP: Add common bindings for MX64/MX65

These bindings are required for all Meraki MX64/MX65 devices. These
common bindings include memory (2GB), PWM LEDs, AMAC, I2C (AT24), NAND
partitions, EHCI, OHCI and pinctrl.

Signed-off-by: Matthew Hagan <mnhagan88@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

arch/arm/boot/dts/bcm958625-meraki-mx6x-common.dtsi

@@ -0,0 +1,129 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Common Bindings for Cisco Meraki MX64 (Kingpin) and MX65 (Alamo) devices.
+ *
+ * Copyright (C) 2020-2021 Matthew Hagan <mnhagan88@gmail.com>
+ */
+
+#include "bcm-nsp.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/leds/common.h>
+
+/ {
+	pwm-leds {
+		compatible = "pwm-leds";
+
+		led-1 {
+			function = LED_FUNCTION_INDICATOR;
+			color = <LED_COLOR_ID_RED>;
+			pwms = <&pwm 1 50000>;
+			max-brightness = <255>;
+		};
+
+		led-2 {
+			function = LED_FUNCTION_INDICATOR;
+			color = <LED_COLOR_ID_GREEN>;
+			pwms = <&pwm 2 50000>;
+			max-brightness = <255>;
+		};
+
+		led-3 {
+			function = LED_FUNCTION_INDICATOR;
+			color = <LED_COLOR_ID_BLUE>;
+			pwms = <&pwm 3 50000>;
+			max-brightness = <255>;
+		};
+	};
+};
+
+&amac2 {
+	status = "okay";
+};
+
+&ehci0 {
+	status = "okay";
+};
+
+&i2c0 {
+	status = "okay";
+
+	at24@50 {
+		compatible = "atmel,24c64";
+		reg = <0x50>;
+		pagesize = <32>;
+		read-only;
+	};
+};
+
+&nand_controller {
+	nand@0 {
+		compatible = "brcm,nandcs";
+		reg = <0>;
+		nand-on-flash-bbt;
+
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		nand-ecc-strength = <24>;
+		nand-ecc-step-size = <1024>;
+
+		brcm,nand-oob-sector-size = <27>;
+
+		partition@0 {
+			label = "u-boot";
+			reg = <0x0 0x80000>;
+			read-only;
+		};
+
+		partition@80000 {
+			label = "shmoo";
+			reg = <0x80000 0x80000>;
+			read-only;
+		};
+
+		partition@100000 {
+			label = "bootkernel1";
+			reg = <0x100000 0x300000>;
+		};
+
+		partition@400000 {
+			label = "nvram";
+			reg = <0x400000 0x100000>;
+		};
+
+		partition@500000 {
+			label = "bootkernel2";
+			reg = <0x500000 0x300000>;
+		};
+
+		partition@800000 {
+			label = "ubi";
+			reg = <0x800000 0x3f700000>;
+		};
+	};
+};
+
+&ohci0 {
+	status = "okay";
+};
+
+&pinctrl {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pwm_leds>;
+
+	pwm_leds: pwm_leds {
+		function = "pwm";
+		groups = "pwm1_grp", "pwm2_grp", "pwm3_grp";
+	};
+};
+
+&pwm {
+	status = "okay";
+	#pwm-cells = <2>;
+};
+
+&uart0 {
+	clock-frequency = <62500000>;
+	status = "okay";
+};