ath79: add support for Netgear PGZNG1

This adds support for the Netgear PGZNG1, also known as the ADT Pulse
Gateway.

Hardware:
CPU: Atheros AR9344
Memory: 256MB
Storage: 256MB NAND Hynix H27U2G8F2CTR-BC
USB: 1x USB 2.0
Ethernet: 2x 100Mb/s
WiFi: Atheros AR9340 2.4GHz 2T2R
Leds: 8 LEDs
Button: 1x Reset Button
UART:
Header marked JPE1. Pinout is VCC, TX, RX, GND. The marked pin, closest
to the JPE1 marking, is VCC. Note VCC isn't required to be connected
for UART to work.

Enable Stock Firmware Shell Access:
1. Interrupt u-boot and run the following commands
setenv console_mode 1
saveenv
reset

This will enable a UART shell in the firmware. You can then login using
the root password of `icontrol`. If that doesn't work, the device is
running a firmware based on OpenWRT where you can drop into failsafe to
mount the FS and then modify /etc/passwd.

Installation Instructions:
1. Interupt u-boot and run the following commands
setenv active_image 0
setenv stock_bootcmd nboot 0x81000000 0 \${kernel_offset}
setenv openwrt_bootcmd nboot 0x82000000 0 \${kernel_offset}
setenv bootcmd run openwrt_bootcmd
saveenv

2. boot initramfs image via TFTP u-boot
tftpboot 0x82000000 openwrt-ath79-nand-netgear_pgzng1-initramfs-kernel.bin; bootm 0x82000000

3. Once booted, use LuCI sysupgrade to
flash openwrt-ath79-nand-netgear_pgzng1-squashfs-sysupgrade.bin

MAC Table:
WAN (eth0): xx:xa - caldata 0x0
LAN (eth1): xx:xb - caldata 0x6
WLAN (phy0): xx:xc - burned into ath9k caldata

Not Working:
Z-Wave
RS422

Signed-off-by: Chris Blake <chrisrblake93@gmail.com>
(added more hw-info, fixed file permissions)
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>

5 files changed, 378 insertions, 0 deletions

diff --git a/target/linux/ath79/dts/ar9344_netgear_pgzng1.dts b/target/linux/ath79/dts/ar9344_netgear_pgzng1.dts
new file mode 100644
index 0000000000..5b91dd1e4d
--- /dev/null
+++ b/target/linux/ath79/dts/ar9344_netgear_pgzng1.dts
@@ -0,0 +1,333 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include "ar9344.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/leds/common.h>
+#include <dt-bindings/leds/leds-pca955x.h>
+
+/ {
+	model = "Netgear PGZNG1";
+	compatible = "netgear,pgzng1", "qca,ar9344";
+
+	aliases {
+		led-boot = &led_power_green;
+		led-failsafe = &led_power_red;
+		led-running = &led_power_green;
+		led-upgrade = &led_power_green;
+		label-mac-device = &eth0;
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,115200";
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		reset {
+			label = "Reset button";
+			linux,code = <KEY_RESTART>;
+			gpios = <&gpio 11 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+		};
+	};
+
+	i2c {
+		compatible = "i2c-gpio";
+		sda-gpios = <&gpio 14 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+		scl-gpios = <&gpio 13 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		expander0: pca9551@60 {
+			compatible = "nxp,pca9551";
+			reg = <0x60>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			led_power_green: led@0 {
+				reg = <0>;
+				color = <LED_COLOR_ID_GREEN>;
+				function = LED_FUNCTION_BOOT;
+				type = <PCA955X_TYPE_LED>;
+				chan-name = "green:boot";
+			};
+
+			led_power_red: led@1 {
+				reg = <1>;
+				color = <LED_COLOR_ID_RED>;
+				function = LED_FUNCTION_BOOT;
+				type = <PCA955X_TYPE_LED>;
+				chan-name = "red:boot";
+			};
+
+			led@2 {
+				reg = <2>;
+				color = <LED_COLOR_ID_GREEN>;
+				function = LED_FUNCTION_WAN;
+				function-enumerator = <1>;
+				type = <PCA955X_TYPE_LED>;
+			};
+
+			led@3 {
+				reg = <3>;
+				color = <LED_COLOR_ID_RED>;
+				function = LED_FUNCTION_WAN;
+				type = <PCA955X_TYPE_LED>;
+			};
+
+			led@4 {
+				reg = <4>;
+				color = <LED_COLOR_ID_GREEN>;
+				function = LED_FUNCTION_WLAN;
+				type = <PCA955X_TYPE_LED>;
+			};
+
+			led@5 {
+				reg = <5>;
+				color = <LED_COLOR_ID_RED>;
+				function = LED_FUNCTION_WLAN;
+				type = <PCA955X_TYPE_LED>;
+			};
+
+			led@6 {
+				reg = <6>;
+				color = <LED_COLOR_ID_GREEN>;
+				function = LED_FUNCTION_INDICATOR;
+				type = <PCA955X_TYPE_LED>;
+			};
+
+			led@7 {
+				reg = <7>;
+				color = <LED_COLOR_ID_RED>;
+				function = LED_FUNCTION_INDICATOR;
+				type = <PCA955X_TYPE_LED>;
+			};
+		};
+
+		expander1: pca9551@61 {
+			compatible = "nxp,pca9551";
+			reg = <0x61>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			gpio-controller;
+			#gpio-cells = <2>;
+
+			/* zwave_rst - Resets ZWave */
+			gpio@4 {
+				reg = <4>;
+				type = <PCA955X_TYPE_GPIO>;
+			};
+
+			/* em_rst - Unknown */
+			gpio@5 {
+				reg = <5>;
+				type = <PCA955X_TYPE_GPIO>;
+			};
+
+			/* tp34 - Test point on PCB? */
+			gpio@6 {
+				reg = <6>;
+				type = <PCA955X_TYPE_GPIO>;
+			};
+
+			/* sw_rst - resets SoC */
+			gpio@7 {
+				reg = <7>;
+				type = <PCA955X_TYPE_GPIO>;
+			};
+		};
+
+		rtc@6f {
+			compatible = "isil,isl1208";
+			reg = <0x6f>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		eth1_link {
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_LAN;
+			gpios = <&gpio 0 GPIO_ACTIVE_HIGH>;
+		};
+
+		eth1_act {
+			color = <LED_COLOR_ID_AMBER>;
+			function = LED_FUNCTION_LAN;
+			gpios = <&gpio 1 GPIO_ACTIVE_LOW>;
+		};
+
+		eth0_link {
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_WAN;
+			function-enumerator = <0>;
+			gpios = <&gpio 2 GPIO_ACTIVE_HIGH>;
+		};
+
+		eth0_act {
+			color = <LED_COLOR_ID_AMBER>;
+			function = LED_FUNCTION_WAN;
+			gpios = <&gpio 3 GPIO_ACTIVE_LOW>;
+		};
+	};
+};
+
+&eth0 {
+	status = "okay";
+	phy-handle = <&swphy0>;
+
+	nvmem-cells = <&macaddr_caldata_6>;
+	nvmem-cell-names = "mac-address";
+};
+
+&eth1 {
+	status = "okay";
+	phy-handle = <&swphy4>;
+
+	nvmem-cells = <&macaddr_caldata_0>;
+	nvmem-cell-names = "mac-address";
+
+	gmac-config {
+		device = <&gmac>;
+		switch-phy-swap = <1>;
+		switch-only-mode = <1>;
+	};
+};
+
+&gpio {
+	gpio_ext_lna0 {
+		gpio-hog;
+		line-name = "ext:lna0";
+		gpios = <18 GPIO_ACTIVE_HIGH>;
+		output-high;
+	};
+
+	gpio_ext_lna1 {
+		gpio-hog;
+		line-name = "ext:lna1";
+		gpios = <19 GPIO_ACTIVE_HIGH>;
+		output-high;
+	};
+
+	gpio_enable_rs422 {
+		gpio-hog;
+		line-name = "power:rs422";
+		gpios = <20 GPIO_ACTIVE_HIGH>;
+		output-high;
+	};
+};
+
+&nand {
+	status = "okay";
+
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		partition@0 {
+			label = "u-boot";
+			reg = <0x0 0x40000>;
+			read-only;
+		};
+
+		partition@40000 {
+			label = "u-boot-env";
+			reg = <0x40000 0x40000>;
+			read-only;
+		};
+
+		/* factory kernel used to be reg = <0x80000 0x200000> */
+		partition@80000 {
+			label = "kernel";
+			reg = <0x80000 0x500000>;
+		};
+
+		/* factory rootfs used to be reg = <0x280000 0x5000000> */
+		partition@580000 {
+			label = "ubi";
+			reg = <0x580000 0x4d00000>;
+		};
+
+		partition@5280000 {
+			label = "uImage2";
+			reg = <0x5280000 0x200000>;
+			read-only;
+		};
+
+		partition@5480000 {
+			label = "rootfs_bak";
+			reg = <0x5480000 0x5000000>;
+			read-only;
+		};
+
+		partition@a480000 {
+			label = "config";
+			reg = <0xa480000 0x1400000>;
+			read-only;
+		};
+
+		partition@b880000 {
+			label = "storage";
+			reg = <0xb880000 0x4700000>;
+			read-only;
+		};
+
+		partition@ff80000 {
+			label = "dummy";
+			reg = <0xff80000 0x60000>;
+			read-only;
+		};
+
+		caldata: partition@ffe0000 {
+			label = "caldata";
+			reg = <0xffe0000 0x20000>;
+			read-only;
+
+			compatible = "nvmem-cells";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			macaddr_caldata_0: macaddr@0 {
+				reg = <0x0 0x6>;
+			};
+
+			macaddr_caldata_6: macaddr@6 {
+				reg = <0x6 0x6>;
+			};
+
+			cal_caldata_1000: cal@1000 {
+				reg = <0x1000 0x440>;
+			};
+		};
+	};
+};
+
+&ref {
+	clock-frequency = <40000000>;
+};
+
+/* zWave is wired up via SPI and UART1 (no idea on pins sadly) */
+&spi {
+	status = "okay";
+};
+
+&wmac {
+	status = "okay";
+
+	nvmem-cells = <&cal_caldata_1000>;
+	nvmem-cell-names = "calibration";
+};
+
+&usb {
+	status = "okay";
+};
+
+&usb_phy {
+	status = "okay";
+};
diff --git a/target/linux/ath79/image/nand.mk b/target/linux/ath79/image/nand.mk
index 726fab068f..4e1ac216a5 100644
--- a/target/linux/ath79/image/nand.mk
+++ b/target/linux/ath79/image/nand.mk
@@ -231,6 +231,23 @@ define Device/netgear_ath79_nand
   UBINIZE_OPTS := -E 5
 endef
 
+define Device/netgear_pgzng1
+  SOC := ar9344
+  DEVICE_MODEL := PGZNG1
+  DEVICE_VENDOR := NETGEAR
+  DEVICE_ALT0_MODEL := Pulse Gateway
+  DEVICE_ALT0_VENDOR := ADT
+  DEVICE_PACKAGES := kmod-usb2 kmod-usb-ledtrig-usbport kmod-i2c-gpio \
+    kmod-leds-pca955x kmod-rtc-isl1208 kmod-spi-dev
+  KERNEL_SIZE := 5120k
+  IMAGE_SIZE := 83968k
+  PAGESIZE := 2048
+  BLOCKSIZE := 128k
+  KERNEL := kernel-bin | append-dtb | lzma | uImage lzma
+  IMAGE/sysupgrade.bin := sysupgrade-tar | check-size | append-metadata
+endef
+TARGET_DEVICES += netgear_pgzng1
+
 define Device/netgear_r6100
   SOC := ar9344
   DEVICE_MODEL := R6100
diff --git a/target/linux/ath79/nand/base-files/etc/board.d/01_leds b/target/linux/ath79/nand/base-files/etc/board.d/01_leds
index e493298457..41c4fa2527 100644
--- a/target/linux/ath79/nand/base-files/etc/board.d/01_leds
+++ b/target/linux/ath79/nand/base-files/etc/board.d/01_leds
@@ -18,6 +18,14 @@ glinet,gl-xe300)
 	ucidef_set_led_netdev "wan" "WAN" "green:wan" "eth1"
 	ucidef_set_led_switch "lan" "LAN" "green:lan" "switch0" "0x10"
 	;;
+netgear,pgzng1)
+	ucidef_set_led_wlan "wlan" "WLAN" "green:wlan" "phy0tpt"
+	ucidef_set_led_switch "wan" "WAN" "green:wan-1" "switch0" "0x02" "0xf" "link tx rx"
+	ucidef_set_led_switch "wan-green" "wan link" "green:wan-0" "switch0" "0x02" "0xf" "link"
+	ucidef_set_led_switch "wan-amber" "wan act" "amber:wan" "switch0" "0x02" "0xf" "tx rx"
+	ucidef_set_led_netdev "lan-green" "lan link" "green:lan" "eth1" "link"
+	ucidef_set_led_netdev "lan-amber" "lan act" "amber:lan" "eth1" "tx rx"
+	;;
 netgear,r6100)
 	ucidef_set_led_netdev "wan-green" "WAN (green)" "green:wan" "eth1"
 	;;
diff --git a/target/linux/ath79/nand/base-files/etc/board.d/02_network b/target/linux/ath79/nand/base-files/etc/board.d/02_network
index bda4eeb917..01f26fb39d 100644
--- a/target/linux/ath79/nand/base-files/etc/board.d/02_network
+++ b/target/linux/ath79/nand/base-files/etc/board.d/02_network
@@ -30,6 +30,9 @@ ath79_setup_interfaces()
 		ucidef_add_switch "switch0" \
 			"0@eth0" "4:lan"
 		;;
+	netgear,pgzng1)
+		ucidef_set_interfaces_lan_wan "eth1" "eth0"
+		;;
 	netgear,r6100)
 		ucidef_set_interface_wan "eth1"
 		ucidef_add_switch "switch0" \
diff --git a/target/linux/ath79/nand/base-files/etc/init.d/boot-leds b/target/linux/ath79/nand/base-files/etc/init.d/boot-leds
new file mode 100644
index 0000000000..f2a1cc13b8
--- /dev/null
+++ b/target/linux/ath79/nand/base-files/etc/init.d/boot-leds
@@ -0,0 +1,17 @@
+#!/bin/sh /etc/rc.common
+# SPDX-License-Identifier: GPL-2.0-only
+
+START=11
+
+# To support LEDs on boards that have drivers loaded after rootfs, let's
+# re-run diag.sh AFTER kmodloader has finished, but before boot is complete.
+# This is useful for userspace LED drivers, LEDs that rely on i2c, etc.
+
+boot() {
+    case $(board_name) in
+    netgear,pgzng1)
+        . /etc/diag.sh
+        set_led_state preinit_regular
+        ;;
+    esac
+}