mediatek/filogic: add Keenetic KN-3811 support

Specification:
 * Mediatek MT7981BA
 * 256 MB SPI-NAND
 * 512 MB DDR4 RAM
 * MT7976CN DBDC AX Wi-Fi
 * MediaTek MT7531AE (3x LAN Gigabit ports) + Internal Gbe Phy (1x WAN Gigabit port)
 * 4x LED (power, internet, fn, wifi)
 * 3x buttons (wps, fn, reset)
 * 1x USB 3.0 port

Serial Interface:
 * 3 Pins GND, RX, TX
 * Settings: 115200, 8N1

Notes:
 * The device supports dual boot mode
 * Fn led reassigned to wlan 2.4

Flash instruction:
The only way to flash OpenWrt image is to use tftp recovery mode in U-Boot:

1. Configure PC with static IP 192.168.1.2/24 and tftp server.
2. Rename "openwrt-mediatek-filogic-keenetic_kn-3811-squashfs-factory.bin"
   to "KN-3811_recovery.bin" and place it in tftp server directory.
3. Connect PC with ethernet port, press the reset button, power up
   the device and keep button pressed until status led start blinking.
4. Device will download file from server, write it to flash and reboot.

Signed-off-by: Maxim Anisimov <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/17135
(cherry picked from commit d087a79b7b03fe93a221fd6246ce437c5c5325c3)
Link: https://github.com/openwrt/openwrt/pull/18055
Signed-off-by: Hauke Mehrtens <[email protected]>

target/linux/mediatek/dts/mt7981b-keenetic-kn-3811.dts

@@ -0,0 +1,368 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+
+/dts-v1/;
+
+#include "mt7981.dtsi"
+
+/ {
+	model = "Keenetic KN-3811";
+	compatible = "keenetic,kn-3811", "mediatek,mt7981";
+
+	aliases {
+		label-mac-device = &gmac0;
+		led-boot = &power_led;
+		led-failsafe = &power_led;
+		led-running = &power_led;
+		led-upgrade = &power_led;
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		button-fn {
+			label = "fn";
+			linux,code = <BTN_0>;
+			gpios = <&pio 5 GPIO_ACTIVE_LOW>;
+		};
+
+		button-reset {
+			label = "reset";
+			linux,code = <KEY_RESTART>;
+			gpios = <&pio 24 GPIO_ACTIVE_LOW>;
+		};
+
+		button-wps {
+			label = "wps";
+			linux,code = <KEY_WPS_BUTTON>;
+			gpios = <&pio 29 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		/* fn led reassigned to wlan 2.4 */
+		led-0 {
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_WLAN_2GHZ;
+			gpios = <&pio 9 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy0tpt";
+		};
+
+		power_led: led-1 {
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_POWER;
+			gpios = <&pio 11 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-2 {
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_WAN;
+			gpios = <&pio 12 GPIO_ACTIVE_LOW>;
+		};
+
+		led-3 {
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_WLAN_5GHZ;
+			gpios = <&pio 34 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy1tpt";
+		};
+	};
+
+	usb_vbus: regulator-usb-vbus {
+		compatible = "regulator-fixed";
+		regulator-name = "usb_vbus";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		gpios = <&pio 6 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+		regulator-boot-on;
+	};
+
+	virtual_flash {
+		compatible = "mtd-concat";
+		devices = <&firmware1 &storage1 &firmware2 &storage2>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "kernel";
+				reg = <0x0 0x600000>;
+			};
+
+			partition@400000 {
+				label = "ubi";
+				reg = <0x600000 0x0>;
+			};
+		};
+	};
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&watchdog {
+	status = "okay";
+};
+
+&eth {
+	status = "okay";
+
+	gmac0: mac@0 {
+		compatible = "mediatek,eth-mac";
+		reg = <0>;
+		phy-mode = "2500base-x";
+
+		nvmem-cell-names = "mac-address";
+		nvmem-cells = <&macaddr_factory_4 0>;
+
+		fixed-link {
+			speed = <2500>;
+			full-duplex;
+			pause;
+		};
+	};
+
+	gmac1: mac@1 {
+		compatible = "mediatek,eth-mac";
+		reg = <1>;
+		phy-mode = "gmii";
+		phy-handle = <&int_gbe_phy>;
+		label = "wan";
+
+		nvmem-cell-names = "mac-address";
+		nvmem-cells = <&macaddr_factory_a 0>;
+	};
+};
+
+&mdio_bus {
+	switch: switch@1f {
+		compatible = "mediatek,mt7531";
+		reg = <0x1f>;
+		reset-gpios = <&pio 22 GPIO_ACTIVE_HIGH>;
+		interrupt-controller;
+		#interrupt-cells = <1>;
+		interrupt-parent = <&pio>;
+		interrupts = <38 IRQ_TYPE_LEVEL_HIGH>;
+	};
+};
+
+&switch {
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		port@0 {
+			reg = <0>;
+			label = "lan1";
+		};
+
+		port@1 {
+			reg = <1>;
+			label = "lan2";
+		};
+
+		port@2 {
+			reg = <2>;
+			label = "lan3";
+		};
+
+		port@6 {
+			reg = <6>;
+			ethernet = <&gmac0>;
+			phy-mode = "2500base-x";
+
+			fixed-link {
+				speed = <2500>;
+				full-duplex;
+				pause;
+			};
+		};
+	};
+};
+
+&pio {
+	spi0_flash_pins: spi0-pins {
+		mux {
+			function = "spi";
+			groups = "spi0", "spi0_wp_hold";
+		};
+
+		conf-pu {
+			pins = "SPI0_CS", "SPI0_HOLD", "SPI0_WP";
+			drive-strength = <MTK_DRIVE_8mA>;
+			bias-pull-up = <MTK_PUPD_SET_R1R0_11>;
+		};
+
+		conf-pd {
+			pins = "SPI0_CLK", "SPI0_MOSI", "SPI0_MISO";
+			drive-strength = <MTK_DRIVE_8mA>;
+			bias-pull-down = <MTK_PUPD_SET_R1R0_11>;
+		};
+	};
+};
+
+&spi0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi0_flash_pins>;
+	status = "okay";
+
+	/* Winbond W25N02KV (256M) */
+	spi_nand@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "spi-nand";
+		reg = <0>;
+
+		spi-max-frequency = <52000000>;
+		spi-tx-buswidth = <4>;
+		spi-rx-buswidth = <4>;
+
+		spi-cal-enable;
+		spi-cal-mode = "read-data";
+		spi-cal-datalen = <7>;
+		spi-cal-data = /bits/ 8 <0x53 0x50 0x49 0x4e 0x41 0x4e 0x44>;
+		spi-cal-addrlen = <5>;
+		spi-cal-addr = /bits/ 32 <0x0 0x0 0x0 0x0 0x0>;
+
+		mediatek,nmbm;
+		mediatek,bmt-max-ratio = <1>;
+		mediatek,bmt-max-reserved-blocks = <64>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			/* bl2 */
+			partition@0 {
+				label = "preloader";
+				reg = <0x0 0x80000>;
+				read-only;
+			};
+
+			/* fip */
+			partition@80000 {
+				label = "u-boot";
+				reg = <0x80000 0x200000>;
+				read-only;
+			};
+
+			partition@280000 {
+				label = "u-config";
+				reg = <0x280000 0x80000>;
+				read-only;
+			};
+
+			partition@300000 {
+				label = "rf-eeprom";
+				reg = <0x300000 0x200000>;
+				read-only;
+
+				nvmem-layout {
+					compatible = "fixed-layout";
+					#address-cells = <1>;
+					#size-cells = <1>;
+
+					eeprom_factory_0: eeprom@0 {
+						reg = <0x0 0x1000>;
+					};
+
+					/* lan mac */
+					macaddr_factory_4: macaddr@4 {
+						compatible = "mac-base";
+						reg = <0x4 0x6>;
+						#nvmem-cell-cells = <1>;
+					};
+
+					/* wan mac */
+					macaddr_factory_a: macaddr@a {
+						compatible = "mac-base";
+						reg = <0xa 0x6>;
+						#nvmem-cell-cells = <1>;
+					};
+				};
+			};
+
+			firmware1: partition@500000 {
+				label = "firmware_1";
+				reg = <0x500000 0x3a00000>;
+			};
+
+			partition@3f00000 {
+				label = "config_1";
+				reg = <0x3f00000 0x80000>;
+				read-only;
+			};
+
+			partition@3f80000 {
+				label = "dump";
+				reg = <0x3f80000 0x80000>;
+				read-only;
+			};
+
+			storage1: partition@4000000 {
+				label = "storage_a";
+				reg = <0x4000000 0x3800000>;
+			};
+
+			partition@7800000 {
+				label = "u-state";
+				reg = <0x7800000 0x20000>;
+				read-only;
+			};
+
+			partition@7a80000 {
+				label = "u-config_res";
+				reg = <0x7a80000 0x80000>;
+				read-only;
+			};
+
+			partition@7b00000 {
+				label = "rf-eeprom_res";
+				reg = <0x7b00000 0x200000>;
+				read-only;
+			};
+
+			firmware2: partition@7d00000 {
+				label = "firmware_2";
+				reg = <0x7d00000 0x3a00000>;
+			};
+
+			partition@b700000 {
+				label = "config_2";
+				reg = <0xb700000 0x80000>;
+				read-only;
+			};
+
+			storage2: partition@b780000 {
+				label = "storage_b";
+				reg = <0xb780000 0x3880000>;
+			};
+		};
+	};
+};
+
+&wifi {
+	nvmem-cell-names = "eeprom";
+	nvmem-cells = <&eeprom_factory_0>;
+	status = "okay";
+};
+
+&usb_phy {
+	status = "okay";
+};
+
+&xhci {
+	status = "okay";
+	vbus-supply = <&usb_vbus>;
+};

target/linux/mediatek/filogic/base-files/etc/board.d/02_network

@@ -33,6 +33,7 @@ mediatek_setup_interfaces()
 	confiabits,mt7981|\
 	cudy,wr3000-v1|\
 	jcg,q30-pro|\
+	keenetic,kn-3811|\
 	qihoo,360t7|\
 	routerich,ax3000|\
 	routerich,ax3000-ubootmod)

target/linux/mediatek/filogic/base-files/etc/hotplug.d/ieee80211/11_fix_wifi_mac

@@ -112,6 +112,7 @@ case "$board" in
 	jdcloud,re-cp-03)
 		[ "$PHYNBR" = "1" ] && mmc_get_mac_binary factory 0xa > /sys${DEVPATH}/macaddress
 		;;
+	keenetic,kn-3811|\
 	keenetic,kn-3911)
 		[ "$PHYNBR" = "1" ] && \
 			macaddr_setbit_la "$(mtd_get_mac_binary rf-eeprom 0x4)" > /sys${DEVPATH}/macaddress

target/linux/mediatek/image/filogic.mk

@@ -920,6 +920,26 @@ define Device/jdcloud_re-cp-03
 endef
 TARGET_DEVICES += jdcloud_re-cp-03
 
+define Device/keenetic_kn-3811
+  DEVICE_VENDOR := Keenetic
+  DEVICE_MODEL := KN-3811
+  DEVICE_DTS := mt7981b-keenetic-kn-3811
+  DEVICE_DTS_DIR := ../dts
+  DEVICE_PACKAGES := kmod-mt7915e kmod-mt7981-firmware mt7981-wo-firmware kmod-usb3
+  UBINIZE_OPTS := -E 5
+  BLOCKSIZE := 128k
+  PAGESIZE := 2048
+  KERNEL_SIZE := 6144k
+  IMAGE_SIZE := 233984k
+  KERNEL := kernel-bin | lzma | fit lzma $$(KDIR)/image-$$(firstword $$(DEVICE_DTS)).dtb | \
+	append-squashfs4-fakeroot
+  IMAGES += factory.bin
+  IMAGE/factory.bin := append-kernel | pad-to $$(KERNEL_SIZE) | \
+	append-ubi | check-size | zyimage -d 0x803811 -v "KN-3811"
+  IMAGE/sysupgrade.bin := sysupgrade-tar | append-metadata
+endef
+TARGET_DEVICES += keenetic_kn-3811
+
 define Device/keenetic_kn-3911
   DEVICE_VENDOR := Keenetic
   DEVICE_MODEL := KN-3911