ath79: add support for TP-Link RE450 v3

TP-Link RE450 v3 is a dual band router/range-extender based on
Qualcomm/Atheros QCA9563 + QCA9880.

This device is nearly identical to RE450 v2 besides a modified flash
layout (hence I think force-flashing a RE450v2 image will lead to at
least loss of MAC address).

Specification:

- 775 MHz CPU
- 64 MB of RAM (DDR2)
- 8 MB of FLASH (SPI NOR)
- 3T3R 2.4 GHz
- 3T3R 5 GHz
- 1x 10/100/1000 Mbps Ethernet (AR8033 PHY)
- 7x LED, 4x button-
- possible UART header on PCB¹

Flash instruction:
Apply factory image in OEM firmware web-gui.

¹ Didn't check to connect as I didn't even manage to connect on
  RE450v2 (AFAIU it requires disconnecting some resistors, which I was
  too much of a coward to do).  But given the similarities to v2 I
  think it's the same or very similar procedure (and most likely also
  the only way to debrick).

Signed-off-by: Andreas Wiese <aw-openwrt@meterriblecrew.net>
[remove dts-v1 and compatible in DTSI]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

3 files changed, 234 insertions, 174 deletions

diff --git a/target/linux/ath79/dts/qca9563_tplink_re450-v2.dts b/target/linux/ath79/dts/qca9563_tplink_re450-v2.dts
index 16bc26c978..4446163a50 100644
--- a/target/linux/ath79/dts/qca9563_tplink_re450-v2.dts
+++ b/target/linux/ath79/dts/qca9563_tplink_re450-v2.dts
@@ -1,194 +1,47 @@
 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
 /dts-v1/;
 
-#include <dt-bindings/gpio/gpio.h>
-#include <dt-bindings/input/input.h>
-
-#include "qca956x.dtsi"
+#include "qca9563_tplink_re450.dtsi"
 
 / {
 	compatible = "tplink,re450-v2", "qca,qca9563";
 	model = "TP-Link RE450 v2";
+};
 
-	chosen {
-		bootargs = "console=ttyS0,115200n8";
+&partitions {
+	partition@0 {
+		label = "u-boot";
+		reg = <0x000000 0x020000>;
+		read-only;
 	};
 
-	aliases {
-		led-boot = &led_power;
-		led-failsafe = &led_power;
-		led-running = &led_power;
-		led-upgrade = &led_power;
-		mdio-gpio0 = &mdio2;
+	partition@20000 {
+		compatible = "tplink,firmware";
+		label = "firmware";
+		reg = <0x020000 0x5e0000>;
 	};
 
-	leds {
-		compatible = "gpio-leds";
-
-		led_power: power {
-			label = "tp-link:blue:power";
-			gpios = <&gpio 1 GPIO_ACTIVE_LOW>;
-		};
-
-		wlan2g {
-			label = "tp-link:blue:wlan2g";
-			gpios = <&gpio 14 GPIO_ACTIVE_LOW>;
-			linux,default-trigger = "phy1tpt";
-		};
-
-		wlan5g {
-			label = "tp-link:blue:wlan5g";
-			gpios = <&gpio 5 GPIO_ACTIVE_LOW>;
-			linux,default-trigger = "phy0tpt";
-		};
-
-		lan_link {
-			label = "tp-link:green:lan_link";
-			gpios = <&gpio 8 GPIO_ACTIVE_LOW>;
-		};
-
-		lan_data {
-			label = "tp-link:green:lan_data";
-			gpios = <&gpio 9 GPIO_ACTIVE_LOW>;
-		};
-
-		wps_blue {
-			label = "tp-link:blue:wps";
-			gpios = <&gpio 17 GPIO_ACTIVE_HIGH>;
-		};
-
-		wps_red {
-			label = "tp-link:red:wps";
-			gpios = <&gpio 20 GPIO_ACTIVE_HIGH>;
-		};
+	partition@600000 {
+		label = "partition-table";
+		reg = <0x600000 0x010000>;
+		read-only;
 	};
 
-	keys {
-		compatible = "gpio-keys";
-
-		reset {
-			label = "Reset button";
-			linux,code = <KEY_RESTART>;
-			gpios = <&gpio 6 GPIO_ACTIVE_LOW>;
-			debounce-interval = <60>;
-		};
-
-		power {
-			label = "Power button";
-			linux,code = <KEY_POWER>;
-			gpios = <&gpio 2 GPIO_ACTIVE_LOW>;
-			debounce-interval = <60>;
-		};
-
-		leds {
-			label = "LED control button";
-			linux,code = <BTN_0>;
-			gpios = <&gpio 7 GPIO_ACTIVE_LOW>;
-			debounce-interval = <60>;
-		};
-
-		wps {
-			label = "WPS button";
-			linux,code = <KEY_WPS_BUTTON>;
-			gpios = <&gpio 19 GPIO_ACTIVE_LOW>;
-			debounce-interval = <60>;
-		};
+	info: partition@610000 {
+		label = "info";
+		reg = <0x610000 0x020000>;
+		read-only;
 	};
 
-	mdio2: mdio {
-		compatible = "virtual,mdio-gpio";
-
-		gpios = <&gpio 3 GPIO_ACTIVE_HIGH>, /* MDC */
-			<&gpio 4 GPIO_ACTIVE_HIGH>; /* MDIO */
-		#address-cells = <1>;
-		#size-cells = <0>;
-
-		phy4: ethernet-phy@4 {
-			reg = <4>;
-			device_type = "ethernet-phy";
-			reset-gpios = <&gpio 11 GPIO_ACTIVE_LOW>;
-		};
+	partition@630000 {
+		label = "config";
+		reg = <0x630000 0x020000>;
+		read-only;
 	};
-};
-
-&pcie {
-	status = "okay";
-};
-
-&uart {
-	status = "okay";
-};
-
-&gpio {
-	status = "okay";
-};
-
-&spi {
-	status = "okay";
-
-	num-cs = <1>;
-
-	flash@0 {
-		compatible = "jedec,spi-nor";
-		reg = <0>;
-		spi-max-frequency = <25000000>;
-
-		partitions {
-			compatible = "fixed-partitions";
-			#address-cells = <1>;
-			#size-cells = <1>;
-
-			partition@0 {
-				label = "u-boot";
-				reg = <0x000000 0x020000>;
-				read-only;
-			};
-
-			partition@20000 {
-				compatible = "tplink,firmware";
-				label = "firmware";
-				reg = <0x020000 0x5e0000>;
-			};
-
-			partition@600000 {
-				label = "partition-table";
-				reg = <0x600000 0x010000>;
-				read-only;
-			};
 
-			info: partition@610000 {
-				label = "info";
-				reg = <0x610000 0x020000>;
-				read-only;
-			};
-
-			partition@630000 {
-				label = "config";
-				reg = <0x630000 0x020000>;
-				read-only;
-			};
-
-			art: partition@7f0000 {
-				label = "art";
-				reg = <0x7f0000 0x010000>;
-				read-only;
-			};
-		};
+	art: partition@7f0000 {
+		label = "art";
+		reg = <0x7f0000 0x010000>;
+		read-only;
 	};
 };
-
-&eth0 {
-	status = "okay";
-
-	phy-mode = "sgmii";
-	phy-handle = <&phy4>;
-
-	mtd-mac-address = <&info 0x8>;
-};
-
-&wmac {
-	status = "okay";
-
-	mtd-cal-data = <&art 0x1000>;
-	mtd-mac-address = <&info 0x8>;
-};
diff --git a/target/linux/ath79/dts/qca9563_tplink_re450-v3.dts b/target/linux/ath79/dts/qca9563_tplink_re450-v3.dts
new file mode 100644
index 0000000000..f85f02428b
--- /dev/null
+++ b/target/linux/ath79/dts/qca9563_tplink_re450-v3.dts
@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/dts-v1/;
+
+#include "qca9563_tplink_re450.dtsi"
+
+/ {
+	compatible = "tplink,re450-v3", "qca,qca9563";
+	model = "TP-Link RE450 v3";
+};
+
+&partitions {
+	partition@0 {
+		label = "u-boot";
+		reg = <0x000000 0x020000>;
+		read-only;
+	};
+
+	info: partition@20000 {
+		label = "info";
+		reg = <0x020000 0x002000>;
+		read-only;
+	};
+
+	partition@22000 {
+		label = "partition-table";
+		reg = <0x022000 0x002000>;
+		read-only;
+	};
+
+	partition@24000 {
+		label = "info2";
+		reg = <0x024000 0x00a000>;
+		read-only;
+	};
+
+	partition@2e000 {
+		label = "config";
+		reg = <0x02e000 0x022000>;
+		read-only;
+	};
+
+	partition@50000 {
+		compatible = "tplink,firmware";
+		label = "firmware";
+		reg = <0x050000 0x7a0000>;
+	};
+
+	art: partition@7f0000 {
+		label = "art";
+		reg = <0x7f0000 0x010000>;
+		read-only;
+	};
+};
diff --git a/target/linux/ath79/dts/qca9563_tplink_re450.dtsi b/target/linux/ath79/dts/qca9563_tplink_re450.dtsi
new file mode 100644
index 0000000000..4e1195b647
--- /dev/null
+++ b/target/linux/ath79/dts/qca9563_tplink_re450.dtsi
@@ -0,0 +1,154 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+#include "qca956x.dtsi"
+
+/ {
+	chosen {
+		bootargs = "console=ttyS0,115200n8";
+	};
+
+	aliases {
+		led-boot = &led_power;
+		led-failsafe = &led_power;
+		led-running = &led_power;
+		led-upgrade = &led_power;
+		mdio-gpio0 = &mdio2;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led_power: power {
+			label = "tp-link:blue:power";
+			gpios = <&gpio 1 GPIO_ACTIVE_LOW>;
+		};
+
+		wlan2g {
+			label = "tp-link:blue:wlan2g";
+			gpios = <&gpio 14 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy1tpt";
+		};
+
+		wlan5g {
+			label = "tp-link:blue:wlan5g";
+			gpios = <&gpio 5 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy0tpt";
+		};
+
+		lan_link {
+			label = "tp-link:green:lan_link";
+			gpios = <&gpio 8 GPIO_ACTIVE_LOW>;
+		};
+
+		lan_data {
+			label = "tp-link:green:lan_data";
+			gpios = <&gpio 9 GPIO_ACTIVE_LOW>;
+		};
+
+		wps_blue {
+			label = "tp-link:blue:wps";
+			gpios = <&gpio 17 GPIO_ACTIVE_HIGH>;
+		};
+
+		wps_red {
+			label = "tp-link:red:wps";
+			gpios = <&gpio 20 GPIO_ACTIVE_HIGH>;
+		};
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		reset {
+			label = "Reset button";
+			linux,code = <KEY_RESTART>;
+			gpios = <&gpio 6 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+		};
+
+		power {
+			label = "Power button";
+			linux,code = <KEY_POWER>;
+			gpios = <&gpio 2 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+		};
+
+		leds {
+			label = "LED control button";
+			linux,code = <BTN_0>;
+			gpios = <&gpio 7 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+		};
+
+		wps {
+			label = "WPS button";
+			linux,code = <KEY_WPS_BUTTON>;
+			gpios = <&gpio 19 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+		};
+	};
+
+	mdio2: mdio {
+		compatible = "virtual,mdio-gpio";
+
+		gpios = <&gpio 3 GPIO_ACTIVE_HIGH>, /* MDC */
+			<&gpio 4 GPIO_ACTIVE_HIGH>; /* MDIO */
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		phy4: ethernet-phy@4 {
+			reg = <4>;
+			device_type = "ethernet-phy";
+			reset-gpios = <&gpio 11 GPIO_ACTIVE_LOW>;
+		};
+	};
+};
+
+&pcie {
+	status = "okay";
+};
+
+&uart {
+	status = "okay";
+};
+
+&gpio {
+	status = "okay";
+};
+
+&spi {
+	status = "okay";
+
+	num-cs = <1>;
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <25000000>;
+
+		partitions: partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+		};
+	};
+};
+
+&eth0 {
+	status = "okay";
+
+	phy-mode = "sgmii";
+	phy-handle = <&phy4>;
+
+	mtd-mac-address = <&info 0x8>;
+};
+
+&wmac {
+	status = "okay";
+
+	mtd-cal-data = <&art 0x1000>;
+	mtd-mac-address = <&info 0x8>;
+};