ath79: add partial support for Netgear EX7300v2

Hardware
--------
SoC: QCN5502
Flash: 16 MiB
RAM: 128 MiB
Ethernet: 1 gigabit port
Wireless No1: QCN5502 on-chip 2.4GHz 4x4
Wireless No2: QCA9984 pcie 5GHz 4x4
USB: none

Installation
------------
Flash the factory image using the stock web interface or TFTP the
factory image to the bootloader.

What works
----------
- LEDs
- Ethernet port
- 5GHz wifi (QCA9984 pcie)

What doesn't work
-----------------
- 2.4GHz wifi (QCN5502 on-chip)
  (I was not able to make this work, probably because ath9k requires
  some changes to support QCN5502.)

Signed-off-by: Wenli Looi <wlooi@ucalgary.ca>

package/boot/uboot-envtools/files/ath79

@@ -39,6 +39,7 @@ glinet,gl-ar750s-nor-nand|\
 librerouter,librerouter-v1|\
 netgear,ex6400|\
 netgear,ex7300|\
+netgear,ex7300-v2|\
 netgear,wndr4300-v2|\
 netgear,wndr4500-v3|\
 netgear,wnr1000-v2|\

target/linux/ath79/dts/qcn5502_netgear_ex7300-v2.dts

@@ -0,0 +1,219 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "qca956x.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	model = "Netgear EX7300 v2";
+	compatible = "netgear,ex7300-v2", "qca,qcn5500", "qca,qca9560";
+
+	aliases {
+		led-boot = &led_power_green;
+		led-failsafe = &led_power_amber;
+		led-running = &led_power_green;
+		led-upgrade = &led_power_amber;
+		label-mac-device = &eth0;
+	};
+
+	led_spi {
+		compatible = "spi-gpio";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		sck-gpios = <&gpio 14 GPIO_ACTIVE_HIGH>;
+		mosi-gpios = <&gpio 0 GPIO_ACTIVE_HIGH>;
+		num-chipselects = <0>;
+
+		led_gpio: led_gpio@0 {
+			compatible = "fairchild,74hc595";
+			reg = <0>;
+			gpio-controller;
+			#gpio-cells = <2>;
+			registers-number = <1>;
+			spi-max-frequency = <500000>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led_power_green: power_green {
+			label = "green:power";
+			gpios = <&gpio 4 GPIO_ACTIVE_LOW>;
+		};
+
+		led_power_amber: power_amber {
+			label = "amber:power";
+			gpios = <&led_gpio 7 GPIO_ACTIVE_LOW>;
+		};
+
+		wps_green {
+			label = "green:wps";
+			gpios = <&led_gpio 6 GPIO_ACTIVE_LOW>;
+		};
+
+		router_red {
+			label = "red:router";
+			gpios = <&led_gpio 5 GPIO_ACTIVE_LOW>;
+		};
+
+		router_green {
+			label = "green:router";
+			gpios = <&led_gpio 4 GPIO_ACTIVE_LOW>;
+		};
+
+		client_red {
+			label = "red:client";
+			gpios = <&led_gpio 3 GPIO_ACTIVE_LOW>;
+		};
+
+		client_green {
+			label = "green:client";
+			gpios = <&led_gpio 2 GPIO_ACTIVE_LOW>;
+		};
+
+		left_blue {
+			label = "blue:left";
+			gpios = <&led_gpio 1 GPIO_ACTIVE_LOW>;
+		};
+
+		right_blue {
+			label = "blue:right";
+			gpios = <&led_gpio 0 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		reset {
+			label = "Reset button";
+			linux,code = <KEY_RESTART>;
+			gpios = <&gpio 3 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+		};
+
+		wps {
+			label = "WPS button";
+			linux,code = <KEY_WPS_BUTTON>;
+			gpios = <&gpio 1 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+		};
+
+		extender_apmode {
+			label = "EXTENDER/APMODE switch";
+			gpios = <&gpio 15 GPIO_ACTIVE_LOW>;
+			linux,code = <BTN_0>;
+			linux,input-type = <EV_SW>;
+			debounce-interval = <60>;
+		};
+	};
+};
+
+&pcie {
+	status = "okay";
+};
+
+&pll {
+	clocks = <&extosc>;
+};
+
+&spi {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <25000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			uboot: partition@0 {
+				label = "u-boot";
+				reg = <0x000000 0x040000>;
+				read-only;
+			};
+
+			partition@40000 {
+				label = "u-boot-env";
+				reg = <0x040000 0x010000>;
+				read-only;
+			};
+
+			partition@50000 {
+				label = "config";
+				reg = <0x050000 0x010000>;
+			};
+
+			partition@60000 {
+				label = "pot";
+				reg = <0x060000 0x010000>;
+				read-only;
+			};
+
+			partition@70000 {
+				label = "firmware";
+				reg = <0x70000 0xe30000>;
+				compatible = "denx,uimage";
+			};
+
+			partition@ea0000 {
+				label = "rae";
+				reg = <0xea0000 0x100000>;
+				read-only;
+			};
+
+			partition@fa0000 {
+				label = "oopsdump";
+				reg = <0xfa0000 0x40000>;
+				read-only;
+			};
+
+			artmtd: partition@fe0000 {
+				label = "artmtd";
+				reg = <0xfe0000 0x10000>;
+			};
+
+			art: partition@ff0000 {
+				label = "art";
+				reg = <0xff0000 0x10000>;
+				read-only;
+			};
+		};
+	};
+};
+
+/*
+Does not work due to lack of QCN5502 support in ath9k.
+&wmac {
+	status = "okay";
+
+	mtd-cal-data = <&art 0x1000>;
+	mtd-mac-address = <&artmtd 0x6>;
+};
+*/
+
+&mdio0 {
+	status = "okay";
+
+	phy5: ethernet-phy@5 {
+		reg = <5>;
+		phy-mode = "sgmii";
+	};
+};
+
+&eth0 {
+	status = "okay";
+
+	mtd-mac-address = <&artmtd 0x0>;
+
+	phy-handle = <&phy5>;
+	phy-mode = "sgmii";
+
+	pll-data = <0x03000000 0x00000101 0x00001313>;
+};

target/linux/ath79/generic/base-files/etc/board.d/02_network

@@ -44,6 +44,7 @@ ath79_setup_interfaces()
 	meraki,mr16|\
 	netgear,ex6400|\
 	netgear,ex7300|\
+	netgear,ex7300-v2|\
 	ocedo,koala|\
 	ocedo,raccoon|\
 	onion,omega|\

target/linux/ath79/generic/base-files/etc/hotplug.d/firmware/11-ath10k-caldata

@@ -218,6 +218,10 @@ case "$FIRMWARE" in
 		caldata_extract "caldata" 0x5000 0x2f20
 		ath10k_patch_mac $(mtd_get_mac_binary caldata 0xc)
 		;;
+	netgear,ex7300-v2)
+		caldata_extract "art" 0x5000 0x2f20
+		ath10k_patch_mac $(mtd_get_mac_binary artmtd 0xc)
+		;;
 	phicomm,k2t)
 		caldata_extract "art" 0x5000 0x2f20
 		ath10k_patch_mac $(k2t_get_mac "5g_mac")

target/linux/ath79/image/generic.mk

@@ -1580,6 +1580,23 @@ define Device/netgear_ex7300
 endef
 TARGET_DEVICES += netgear_ex7300
 
+define Device/netgear_ex7300-v2
+  $(Device/netgear_generic)
+  SOC := qcn5502
+  DEVICE_MODEL := EX7300
+  DEVICE_VARIANT := v2
+  UIMAGE_MAGIC := 0x27051956
+  NETGEAR_BOARD_ID := EX7300v2series
+  NETGEAR_HW_ID := 29765907+16+0+128
+  IMAGE_SIZE := 14528k
+  IMAGE/default := append-kernel | pad-offset $$$$(BLOCKSIZE) 64 | \
+	netgear-rootfs | pad-rootfs
+  IMAGE/sysupgrade.bin := $$(IMAGE/default) | check-size | append-metadata
+  IMAGE/factory.img := $$(IMAGE/default) | check-size | netgear-dni
+  DEVICE_PACKAGES := kmod-ath10k-ct ath10k-firmware-qca9984-ct
+endef
+TARGET_DEVICES += netgear_ex7300-v2
+
 define Device/netgear_wndr3x00
   $(Device/netgear_generic)
   SOC := ar7161