mediatek: add support for BananaPi BPI-R4 board

Hardware
--------
SOC:    MediaTek MT7988A (4x Cortex-A73)
RAM:    4 GiB DDR4
Flash:  128 MiB Winbond SPI-NAND
MMC:    8 GiB eMMC *or* microSD (cannot be used both)
ETH:    4x 1GE (1x WAN, 3x LAN)
        2x SFP+ (10G, 5G, 2.5G, 1G)
USB:    on-board USB 3.2 4-port hub
        1x USB 3.2 port (type A connector)
        1x M.2 for 4G/5G modem
        2x mPCIe for additional modems
WiFi:   optional MediaTek MT7996 Wi-Fi 7 module
        (using 2x PCIe gen3 x2 on the mPCIe slots and 12V power)

Installation
------------
1. Decompress and write the sdcard image to a micro SD card and use that
to boot the R4 (both dip switches in upper position).

2. Use the bootloader menu accessible via the serial console to install
to SPI-NAND.

3. Switch to boot from SPI-NAND and install to eMMC.

Signed-off-by: Daniel Golle <[email protected]>

package/boot/uboot-envtools/files/mediatek_filogic

@@ -12,7 +12,9 @@ touch /etc/config/ubootenv
 board=$(board_name)
 
 case "$board" in
-bananapi,bpi-r3)
+bananapi,bpi-r3|\
+bananapi,bpi-r4|\
+bananapi,bpi-r4-poe)
 	case "$(cmdline_get_var root)" in
 	/dev/mmc*)
 		local envdev=$(find_mmc_part "ubootenv" $rootdev)

target/linux/mediatek/base-files/etc/uci-defaults/99_fwenv-store-ethaddr.sh

@@ -9,7 +9,9 @@ unielec,u7623-02)
 	[ -z "$(fw_printenv -n ethaddr 2>/dev/null)" ] &&
 		fw_setenv ethaddr "$(cat /sys/class/net/eth0/address)"
 	;;
-bananapi,bpi-r3)
+bananapi,bpi-r3|\
+bananapi,bpi-r4|\
+bananapi,bpi-r4-poe)
 	[ -z "$(fw_printenv -n ethaddr 2>/dev/null)" ] &&
 		fw_setenv ethaddr "$(cat /sys/class/net/eth0/address)"
 	[ -z "$(fw_printenv -n eth1addr 2>/dev/null)" ] &&

target/linux/mediatek/files-6.1/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4-emmc.dtso

@@ -0,0 +1,62 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (C) 2021 MediaTek Inc.
+ * Author: Frank Wunderlich <[email protected]>
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "bananapi,bpi-r4", "mediatek,mt7988a";
+
+	fragment@0 {
+		target-path = "/soc/mmc@11230000";
+		__overlay__ {
+			pinctrl-names = "default", "state_uhs";
+			pinctrl-0 = <&mmc0_pins_emmc_51>;
+			pinctrl-1 = <&mmc0_pins_emmc_51>;
+			bus-width = <8>;
+			max-frequency = <200000000>;
+			cap-mmc-highspeed;
+			mmc-hs200-1_8v;
+			mmc-hs400-1_8v;
+			hs400-ds-delay = <0x12814>;
+			vqmmc-supply = <&reg_1p8v>;
+			vmmc-supply = <&reg_3p3v>;
+			non-removable;
+			no-sd;
+			no-sdio;
+			status = "okay";
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			card@0 {
+				compatible = "mmc-card";
+				reg = <0>;
+
+				block {
+					compatible = "block-device";
+					partitions {
+						block-partition-env {
+							partname = "ubootenv";
+							nvmem-layout {
+								compatible = "u-boot,env-layout";
+							};
+						};
+						emmc_rootfs: block-partition-production {
+							partname = "production";
+						};
+					};
+				};
+			};
+		};
+	};
+
+	fragment@2 {
+		target-path = "/chosen";
+		__overlay__ {
+			rootdisk-emmc = <&emmc_rootfs>;
+		};
+	};
+};

target/linux/mediatek/files-6.1/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4-poe.dts

@@ -0,0 +1,25 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (C) 2022 MediaTek Inc.
+ * Author: Sam.Shih <[email protected]>
+ */
+
+#include "mt7988a-bananapi-bpi-r4.dts"
+
+/ {
+	model = "Bananapi BPI-R4 2.5GE PoE";
+	compatible = "bananapi,bpi-r4-poe",
+		     "mediatek,mt7988a";
+};
+
+&gmac1 {
+	phy-mode = "internal";
+	phy-connection-type = "internal";
+	phy = <&int_2p5g_phy>;
+	status = "okay";
+};
+
+&int_2p5g_phy {
+	pinctrl-names = "i2p5gbe-led";
+	pinctrl-0 = <&i2p5gbe_led0_pins>;
+};

target/linux/mediatek/files-6.1/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4-rtc.dtso

@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (C) 2023
+ * Author: Daniel Golle <[email protected]>
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "bananapi,bpi-r4", "mediatek,mt7988a";
+
+	fragment@0 {
+		target = <&pcf8563>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+};

target/linux/mediatek/files-6.1/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4-sd.dtso

@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (C) 2023 MediaTek Inc.
+ * Author: Frank Wunderlich <[email protected]>
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+	compatible = "bananapi,bpi-r4", "mediatek,mt7988a";
+
+	fragment@1 {
+		target-path = "/soc/mmc@11230000";
+		__overlay__ {
+			pinctrl-names = "default", "state_uhs";
+			pinctrl-0 = <&mmc0_pins_sdcard>;
+			pinctrl-1 = <&mmc0_pins_sdcard>;
+			cd-gpios = <&pio 12 GPIO_ACTIVE_LOW>;
+			bus-width = <4>;
+			max-frequency = <52000000>;
+			cap-sd-highspeed;
+			vmmc-supply = <&reg_3p3v>;
+			vqmmc-supply = <&reg_3p3v>;
+			no-mmc;
+			status = "okay";
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			card@0 {
+				compatible = "mmc-card";
+				reg = <0>;
+
+				block {
+					compatible = "block-device";
+					partitions {
+						block-partition-env {
+							partname = "ubootenv";
+							nvmem-layout {
+								compatible = "u-boot,env-layout";
+							};
+						};
+						sd_rootfs: block-partition-production {
+							partname = "production";
+						};
+					};
+				};
+			};
+		};
+	};
+
+	fragment@2 {
+		target-path = "/chosen";
+		__overlay__ {
+			rootdisk-sd = <&sd_rootfs>;
+		};
+	};
+};

target/linux/mediatek/files-6.1/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4-wifi-mt7996a.dtso

@@ -0,0 +1,99 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+	compatible = "bananapi,bpi-r4", "mediatek,mt7988a";
+
+	fragment@0 {
+		target-path = "/";
+		__overlay__ {
+			wifi_12v: regulator-wifi-12v {
+				compatible = "regulator-fixed";
+				regulator-name = "wifi";
+				regulator-min-microvolt = <12000000>;
+				regulator-max-microvolt = <12000000>;
+				gpio = <&pio 4 GPIO_ACTIVE_HIGH>;
+				enable-active-high;
+				regulator-always-on;
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&i2c_wifi>;
+		__overlay__ {
+			// 5G WIFI MAC Address EEPROM
+			wifi_eeprom@51 {
+				compatible = "atmel,24c02";
+				reg = <0x51>;
+				address-bits = <8>;
+				page-size = <8>;
+				size = <256>;
+
+				nvmem-layout {
+					compatible = "fixed-layout";
+					#address-cells = <1>;
+					#size-cells = <1>;
+
+					macaddr_5g: macaddr@0 {
+						reg = <0x0 0x6>;
+					};
+				};
+			};
+
+			// 6G WIFI MAC Address EEPROM
+			wifi_eeprom@52 {
+				compatible = "atmel,24c02";
+				reg = <0x52>;
+				address-bits = <8>;
+				page-size = <8>;
+				size = <256>;
+
+				nvmem-layout {
+					compatible = "fixed-layout";
+					#address-cells = <1>;
+					#size-cells = <1>;
+
+					macaddr_6g: macaddr@0 {
+						reg = <0x0 0x6>;
+					};
+				};
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&pcie0>;
+		__overlay__ {
+			pcie@0,0 {
+				reg = <0x0000 0 0 0 0>;
+
+				wifi@0,0 {
+					compatible = "mediatek,mt76";
+					reg = <0x0000 0 0 0 0>;
+					nvmem-cell-names = "mac-address";
+					nvmem-cells = <&macaddr_5g>;
+				};
+			};
+		};
+	};
+
+	fragment@3 {
+		target = <&pcie1>;
+		__overlay__ {
+			pcie@0,0 {
+				reg = <0x0000 0 0 0 0>;
+
+				wifi@0,0 {
+					compatible = "mediatek,mt76";
+					reg = <0x0000 0 0 0 0>;
+					nvmem-cell-names = "mac-address";
+					nvmem-cells = <&macaddr_6g>;
+				};
+			};
+		};
+	};
+};