realtek: add support for APRESIA ApresiaLightGS120GT-SS

APRESIA ApresiaLightGS120GT-SS (APLGS120GTSS) is a 16 + 4 ports gigabit
switch, based on RTL8382M.

Specifications:

- SoC          : Realtek RTL8382M
- RAM          : DDR3 256 MiB (Nanya NT5CC256M8JQ-EK)
- Flash        : SPI-NOR 32 MiB (Macronix MX25L25635FMI-10G)
- Ethernet     : 10/100/1000 Mbps x16 + 4
  - port  1-8  : RTL8218B
  - port  9-16 : RTL8382M, TP (SoC, RTL8218B)
  - port 17-20 : RTL8214FC, TP/SFP (Combo)
- LEDs/Keys    : 3x/1x
- UART         : through-hole on PCB
  - J6: 3.3V, TX, RX, GND from tri-angle marking side
  - 115200n8
- Power        : 100-120/200-240 VAC, 50/60 Hz
                 Max. 16 W, Avg 14 W (100 VAC)
  - Plug       : IEC 60320-C13

Flash instruction using factory image:

1. Boot ApresiaLightGS120GT-SS normally
2. Login to WebUI and open firmware page ("ファームウェア")
3. If the device is booted from image1, set active image for next
   booting ("起動イメージ選択") to image2("イメージ2"), press apply
   ("適用") button and reboot the device to make booting from image2
4. On the WebUI, set active image to image1
5. Select the OpenWrt factory image and press update button ("更新")
6. Open reboot page ("再起動") and press reboot button ("再起動実行")

Notes:

- "ApresiaLightGS120GT-SS" is a model name and "APLGS120GTSS" is a model
  number

- this device has 3x GPIO-controlled LEDs on PCB, but 1x LED
  ("green:unused") has no hole on the case

Signed-off-by: INAGAKI Hiroshi <musashino.open@gmail.com>

1 files changed, 270 insertions, 0 deletions

diff --git a/target/linux/realtek/dts-5.10/rtl8382_apresia_aplgs120gtss.dts b/target/linux/realtek/dts-5.10/rtl8382_apresia_aplgs120gtss.dts
new file mode 100644
index 0000000000..15120265c9
--- /dev/null
+++ b/target/linux/realtek/dts-5.10/rtl8382_apresia_aplgs120gtss.dts
@@ -0,0 +1,270 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "rtl838x.dtsi"
+
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/leds/common.h>
+
+/ {
+	compatible = "apresia,aplgs120gtss", "realtek,rtl8382-soc";
+	model = "APRESIA ApresiaLightGS120GT-SS";
+
+	aliases {
+		led-boot = &led_power;
+		led-failsafe = &led_power;
+		led-running = &led_power;
+		led-upgrade = &led_power;
+	};
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x0 0x10000000>;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led_power: led-0 {
+			label = "green:pwr";
+			gpios = <&gpio0 0 GPIO_ACTIVE_LOW>;
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_POWER;
+		};
+
+		led-1 {
+			label = "red:loop";
+			gpios = <&gpio1 10 GPIO_ACTIVE_LOW>;
+			color = <LED_COLOR_ID_RED>;
+			function = LED_FUNCTION_FAULT;
+		};
+
+		/* LED chip is soldered, but no hole on the case */
+		led-2 {
+			label = "green:unused";
+			gpios = <&gpio1 36 GPIO_ACTIVE_LOW>;
+			color = <LED_COLOR_ID_GREEN>;
+		};
+	};
+
+	keys {
+		compatible = "gpio-keys-polled";
+		poll-interval = <20>;
+
+		reset {
+			label = "reset";
+			gpios = <&gpio1 33 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+	};
+
+	gpio-restart {
+		compatible = "gpio-restart";
+		gpios = <&gpio1 34 GPIO_ACTIVE_LOW>;
+		open-source;
+	};
+
+	gpio1: rtl8231-gpio {
+		compatible = "realtek,rtl8231-gpio";
+		#gpio-cells = <2>;
+		gpio-controller;
+		indirect-access-bus-id = <0>;
+	};
+
+	i2c0: i2c-gpio-0 {
+		compatible = "i2c-gpio";
+		sda-gpios = <&gpio1 1 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+		scl-gpios = <&gpio1 2 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+		i2c-gpio,delay-us = <2>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+	};
+
+	i2c1: i2c-gpio-1 {
+		compatible = "i2c-gpio";
+		sda-gpios = <&gpio1 6 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+		scl-gpios = <&gpio1 7 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+		i2c-gpio,delay-us = <2>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+	};
+
+	i2c2: i2c-gpio-2 {
+		compatible = "i2c-gpio";
+		sda-gpios = <&gpio1 11 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+		scl-gpios = <&gpio1 12 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+		i2c-gpio,delay-us = <2>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+	};
+
+	i2c3: i2c-gpio-3 {
+		compatible = "i2c-gpio";
+		sda-gpios = <&gpio1 22 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+		scl-gpios = <&gpio1 23 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+		i2c-gpio,delay-us = <2>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+	};
+
+	/* 4x TX-Disable lines are provided by RTL8214FC */
+	sfp0: sfp-p17 {
+		compatible = "sff,sfp";
+		i2c-bus = <&i2c1>;
+		los-gpio = <&gpio1 9 GPIO_ACTIVE_HIGH>;
+		mod-def0-gpio = <&gpio1 8 GPIO_ACTIVE_LOW>;
+	};
+
+	sfp1: sfp-p18 {
+		compatible = "sff,sfp";
+		i2c-bus = <&i2c0>;
+		los-gpio = <&gpio1 4 GPIO_ACTIVE_HIGH>;
+		mod-def0-gpio = <&gpio1 3 GPIO_ACTIVE_LOW>;
+	};
+
+	sfp2: sfp-p19 {
+		compatible = "sff,sfp";
+		i2c-bus = <&i2c3>;
+		los-gpio = <&gpio1 25 GPIO_ACTIVE_HIGH>;
+		mod-def0-gpio = <&gpio1 24 GPIO_ACTIVE_LOW>;
+	};
+
+	sfp3: sfp-p20 {
+		compatible = "sff,sfp";
+		i2c-bus = <&i2c2>;
+		los-gpio = <&gpio1 14 GPIO_ACTIVE_HIGH>;
+		mod-def0-gpio = <&gpio1 13 GPIO_ACTIVE_LOW>;
+	};
+};
+
+&gpio0 {
+	rtl8231_reset {
+		gpio-hog;
+		gpios = <1 GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "rtl8231-reset";
+	};
+};
+
+&spi0 {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <10000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "u-boot";
+				reg = <0x0 0x80000>;
+				read-only;
+			};
+
+			partition@80000 {
+				label = "u-boot-env";
+				reg = <0x80000 0x40000>;
+			};
+
+			partition@c0000 {
+				label = "u-boot-env2";
+				reg = <0xc0000 0x40000>;
+			};
+
+			partition@100000 {
+				compatible = "openwrt,uimage", "denx,uimage";
+				label = "firmware";
+				reg = <0x100000 0xe80000>;
+				openwrt,ih-magic = <0x12345000>;
+			};
+
+			partition@f80000 {
+				label = "firmware2";
+				reg = <0xf80000 0xe80000>;
+			};
+
+			partition@1e00000 {
+				label = "jffs2";
+				reg = <0x1e00000 0x200000>;
+				read-only;
+			};
+		};
+	};
+};
+
+&ethernet0 {
+	mdio-bus {
+		compatible = "realtek,rtl838x-mdio";
+		regmap = <&ethernet0>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		EXTERNAL_PHY(0)
+		EXTERNAL_PHY(1)
+		EXTERNAL_PHY(2)
+		EXTERNAL_PHY(3)
+		EXTERNAL_PHY(4)
+		EXTERNAL_PHY(5)
+		EXTERNAL_PHY(6)
+		EXTERNAL_PHY(7)
+
+		INTERNAL_PHY(8)
+		INTERNAL_PHY(9)
+		INTERNAL_PHY(10)
+		INTERNAL_PHY(11)
+		INTERNAL_PHY(12)
+		INTERNAL_PHY(13)
+		INTERNAL_PHY(14)
+		INTERNAL_PHY(15)
+
+		EXTERNAL_SFP_PHY_FULL(24, 0)
+		EXTERNAL_SFP_PHY_FULL(25, 1)
+		EXTERNAL_SFP_PHY_FULL(26, 2)
+		EXTERNAL_SFP_PHY_FULL(27, 3)
+	};
+};
+
+&switch0 {
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		SWITCH_PORT(0, 1, qsgmii)
+		SWITCH_PORT(1, 2, qsgmii)
+		SWITCH_PORT(2, 3, qsgmii)
+		SWITCH_PORT(3, 4, qsgmii)
+		SWITCH_PORT(4, 5, qsgmii)
+		SWITCH_PORT(5, 6, qsgmii)
+		SWITCH_PORT(6, 7, qsgmii)
+		SWITCH_PORT(7, 8, qsgmii)
+
+		SWITCH_PORT(8, 9, internal)
+		SWITCH_PORT(9, 10, internal)
+		SWITCH_PORT(10, 11, internal)
+		SWITCH_PORT(11, 12, internal)
+		SWITCH_PORT(12, 13, internal)
+		SWITCH_PORT(13, 14, internal)
+		SWITCH_PORT(14, 15, internal)
+		SWITCH_PORT(15, 16, internal)
+
+		SWITCH_PORT(24, 17, qsgmii)
+		SWITCH_PORT(25, 18, qsgmii)
+		SWITCH_PORT(26, 19, qsgmii)
+		SWITCH_PORT(27, 20, qsgmii)
+
+		port@28 {
+			ethernet = <&ethernet0>;
+			reg = <28>;
+			phy-mode = "internal";
+
+			fixed-link {
+				speed = <1000>;
+				full-duplex;
+			};
+		};
+	};
+};