kirkwood: add ZyXEL NSA325 device

This patch add ZyXEL NSA325 2-Bay Media Server

The ZyXEL NSA325 device is a Kirkwood based NAS:

- SoC: Marvell 88F6702 1600Mhz
- SDRAM memory: 512MB DDR2 400Mhz
- Gigabit ethernet: Marvell Alaska
- Flash memory: 128MB
- 1 Power button
- 1 Power LED (blue)
- 5 Status LED (green/red)
- 1 Copy/Sync button
- 1 Reset button
- 2 SATA II ports (internal)
- 2 USB 2.0 ports (back)
- 1 USB 3.0 port (front)
- Fan (fixed speed)
- hardware watchdog in a mcu

Basically a bigger, more powerful version of NSA310,
installation is the same as they share the same flash layout.

A notable difference is that there is a hardware watchdog
in a mcu on the board, which is disabled by default in the LEDE u-boot.
The watchdog is also disabled with a GPIO activation through
raw register change when kwbooting or it would reset the board before
the new uboot was transferred.

Signed-off-by: Alberto Bursi <alberto.bursi@outlook.it>
Signed-off-by: Felix Fietkau <nbd@nbd.name> [remove dead code]

1 files changed, 238 insertions, 0 deletions

diff --git a/target/linux/kirkwood/patches-4.4/194-nsa325.patch b/target/linux/kirkwood/patches-4.4/194-nsa325.patch
new file mode 100644
index 0000000000..8e5cd7759e
--- /dev/null
+++ b/target/linux/kirkwood/patches-4.4/194-nsa325.patch
@@ -0,0 +1,238 @@
+--- a/arch/arm/boot/dts/Makefile
++++ b/arch/arm/boot/dts/Makefile
+@@ -205,6 +205,7 @@ dtb-$(CONFIG_MACH_KIRKWOOD) += \
+ 	kirkwood-nsa310a.dtb \
+ 	kirkwood-nsa310b.dtb \
+ 	kirkwood-nsa310s.dtb \
++	kirkwood-nsa325.dtb \
+ 	kirkwood-openblocks_a6.dtb \
+ 	kirkwood-openblocks_a7.dtb \
+ 	kirkwood-openrd-base.dtb \
+--- /dev/null
++++ b/arch/arm/boot/dts/kirkwood-nsa325.dts
+@@ -0,0 +1,225 @@
++/*
++ * Device tree file for Zyxel NSA325 and NSA325v2 NAS
++ */
++/dts-v1/;
++#include "kirkwood-nsa3x0-common.dtsi"
++
++/ {
++	model = "ZyXEL NSA325";
++	compatible = "zyxel,nsa325", "marvell,kirkwood-88f6282", "marvell,kirkwood";
++
++	memory {
++		device_type = "memory";
++		reg = <0x00000000 0x20000000>;
++	};
++
++	chosen {
++		bootargs = "console=ttyS0,115200";
++		stdout-path = &uart0;
++	};
++
++	mbus {
++		pcie-controller {
++			status = "okay";
++
++			pcie@1,0 {
++				status = "okay";
++			};
++		};
++	};
++
++	ocp@f1000000 {
++		pinctrl: pin-controller@10000 {
++			pinctrl-names = "default";
++
++			pmx_led_sata2_green: pmx-led-sata2-green {
++				marvell,pins = "mpp12";
++				marvell,function = "gpio";
++			};
++
++			pmx_led_sata2_red: pmx-led-sata2-red {
++				marvell,pins = "mpp13";
++				marvell,function = "gpio";
++			};
++
++			pmx_mcu_data: pmx-mcu-data {
++				marvell,pins = "mpp14";
++				marvell,function = "gpio";
++			};
++
++			pmx_led_usb_green: pmx-led-usb-green {
++				marvell,pins = "mpp15";
++				marvell,function = "gpio";
++			};
++
++			pmx_mcu_clk: pmx-mcu-clk {
++				marvell,pins = "mpp16";
++				marvell,function = "gpio";
++			};
++
++			pmx_mcu_act: pmx-mcu-act {
++				marvell,pins = "mpp17";
++				marvell,function = "gpio";
++			};
++
++			pmx_usb_power_off: pmx-usb-power-off {
++				marvell,pins = "mpp21";
++				marvell,function = "gpio";
++			};
++
++			pmx_led_sys_green: pmx-led-sys-green {
++				marvell,pins = "mpp28";
++				marvell,function = "gpio";
++			};
++
++			pmx_led_sys_orange: pmx-led-sys-orange {
++				marvell,pins = "mpp29";
++				marvell,function = "gpio";
++			};
++
++			pmx_led_sata1_green: pmx-led-sata1-green {
++				marvell,pins = "mpp41";
++				marvell,function = "gpio";
++			};
++
++			pmx_led_sata1_red: pmx-led-sata1-red {
++				marvell,pins = "mpp42";
++				marvell,function = "gpio";
++			};
++
++			pmx_beeper: pmx-beeper {
++				marvell,pins = "mpp44";
++				marvell,function = "gpio";
++			};
++
++			pmx_pwr_sata1: pmx-pwr-sata1 {
++				marvell,pins = "mpp47";
++				marvell,function = "gpio";
++			};
++
++		};
++
++		/* This board uses the pcf8563 RTC instead of the SoC RTC */
++		rtc@10300 {
++			status = "disabled";
++		};
++
++		i2c@11000 {
++			status = "okay";
++
++			pcf8563: pcf8563@51 {
++				compatible = "nxp,pcf8563";
++				reg = <0x51>;
++			};
++		};
++
++	};
++
++	gpio-leds {
++		compatible = "gpio-leds";
++		pinctrl-0 = <&pmx_led_sata1_green &pmx_led_sata1_red
++			     &pmx_led_sata2_green &pmx_led_sata2_red
++			     &pmx_led_sys_green &pmx_led_sys_orange
++			     &pmx_led_copy_green &pmx_led_copy_red
++			     &pmx_led_usb_green>;
++		pinctrl-names = "default";
++
++		green-sata2 {
++			label = "nsa325:green:sata2";
++			gpios = <&gpio0 12 GPIO_ACTIVE_HIGH>;
++                        linux,default-trigger = "ide-disk2";
++		};
++
++		red-sata2 {
++			label = "nsa325:red:sata2";
++			gpios = <&gpio0 13 GPIO_ACTIVE_HIGH>;
++		};
++
++		green-usb {
++			label = "nsa325:green:usb";
++			gpios = <&gpio0 15 GPIO_ACTIVE_HIGH>;
++                        linux,default-trigger = "usb-host";
++		};
++
++		green-sys {
++			label = "nsa325:green:sys";
++			gpios = <&gpio0 28 GPIO_ACTIVE_HIGH>;
++			linux,default-trigger = "default-on";
++		};
++
++		orange-sys {
++			label = "nsa325:orange:sys";
++			gpios = <&gpio0 29 GPIO_ACTIVE_HIGH>;
++			linux,default-trigger = "cpu0";
++		};
++
++		green-copy {
++			label = "nsa325:green:copy";
++			gpios = <&gpio1 7 GPIO_ACTIVE_HIGH>;
++		};
++
++		red-copy {
++			label = "nsa325:red:copy";
++			gpios = <&gpio1 8 GPIO_ACTIVE_HIGH>;
++		};
++
++		green-sata1 {
++			label = "nsa325:green:sata1";
++			gpios = <&gpio1 9 GPIO_ACTIVE_HIGH>;
++			linux,default-trigger = "ide-disk1";
++		};
++
++		red-sata1 {
++			label = "nsa325:red:sata1";
++			gpios = <&gpio1 10 GPIO_ACTIVE_HIGH>;
++		};
++	};
++
++	regulators {
++		compatible = "simple-bus";
++		#address-cells = <1>;
++		#size-cells = <0>;
++		pinctrl-0 = <&pmx_usb_power_off &pmx_pwr_sata1>;
++		pinctrl-names = "default";
++
++		usb_power: regulator@1 {
++			compatible = "regulator-fixed";
++			reg = <1>;
++			regulator-name = "USB Power";
++			regulator-min-microvolt = <5000000>;
++			regulator-max-microvolt = <5000000>;
++			regulator-always-on;
++			regulator-boot-on;
++			enable-active-high;
++			gpio = <&gpio0 21 GPIO_ACTIVE_HIGH>;
++		};
++
++		sata1_power: regulator@2 {
++			compatible = "regulator-fixed";
++			reg = <2>;
++			regulator-name = "SATA Power";
++			regulator-min-microvolt = <5000000>;
++			regulator-max-microvolt = <5000000>;
++			regulator-always-on;
++			regulator-boot-on;
++			enable-active-high;
++			gpio = <&gpio1 15 GPIO_ACTIVE_HIGH>;
++		};
++	};
++};
++
++&mdio {
++	status = "okay";
++
++	ethphy0: ethernet-phy@1 {
++		reg = <1>;
++	};
++};
++
++&eth0 {
++	status = "okay";
++
++	ethernet0-port@0 {
++		phy-handle = <&ethphy0>;
++	};
++};