add r3mini as new board

use dts from immortalwrt

immortalwrt/immortalwrt@14e2410

squashed:
defconfig: r3mini: add options for pcie, nvme and cache
dts: r3mini: prepare second phy
dts: r3mini: define enable-gpio as regulator
defconfig: r3mini: add pstore
defconfig: r3mini: add ext4 support

arch/arm/dts/Makefile

@@ -1229,6 +1229,7 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += \
 	mt7981-sd-rfb.dtb \
 	mt7986a-bpi-r3-sd.dtb \
 	mt7986a-bpi-r3-emmc.dtb \
+	mt7986a-bpi-r3-mini.dtb \
 	mt7986a-rfb.dtb \
 	mt7986b-rfb.dtb \
 	mt7986a-sd-rfb.dtb \

arch/arm/dts/mt7986a-bpi-r3-mini.dts

@@ -0,0 +1,286 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+/dts-v1/;
+#include "mt7986.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/linux-event-codes.h>
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+	model = "Bananapi BPi-R3 Mini";
+	compatible = "mediatek,mt7986", "mediatek,mt7986-rfb";
+
+	chosen {
+		stdout-path = &uart0;
+		tick-timer = &timer0;
+	};
+
+	memory@40000000 {
+		device_type = "memory";
+		reg = <0x40000000 0x80000000>;
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		button-reset {
+			label = "reset";
+			linux,code = <KEY_RESTART>;
+			gpios = <&gpio 7 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		status_led: led-0 {
+			label = "green:status";
+			gpios = <&gpio 19 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-1 {
+			label = "blue:wlan2g";
+			gpios = <&gpio 1 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-2 {
+			label = "blue:wlan5g";
+			gpios = <&gpio 2 GPIO_ACTIVE_HIGH>;
+		};
+	};
+
+	reg_1p8v: regulator-1p8v {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-1.8V";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-boot-on;
+		regulator-always-on;
+	};
+
+	reg_3p3v: regulator-3p3v {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-3.3V";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+		regulator-always-on;
+	};
+
+	en8811_a: regulator-phy1 {
+		compatible = "regulator-fixed";
+		regulator-name = "phy1";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&gpio 16 GPIO_ACTIVE_LOW>;
+		enable-active-low;
+		regulator-boot-on;
+		regulator-always-on;
+	};
+
+	/*en8811_b: regulator-phy2 {
+		compatible = "regulator-fixed";
+		regulator-name = "phy2";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&gpio 17 GPIO_ACTIVE_LOW>;
+		enable-active-low;
+		regulator-boot-on;
+		regulator-always-on;
+	};*/
+};
+
+&eth {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&mdio_pins>;//, <&en8811_pwr_a>;
+
+	mediatek,gmac-id = <0>;
+	phy-mode = "2500base-x";
+	phy-handle = <&phy14>;
+
+	phy14: eth-phy@14 {
+		compatible = "ethernet-phy-id03a2.a411";
+		reg = <14>;
+
+		airoha,rx-pol-reverse;
+
+		reset-gpios = <&gpio 49 GPIO_ACTIVE_LOW>;
+		reset-assert-us = <10000>;
+		reset-deassert-us = <20000>;
+	};
+
+	/*phy15: eth-phy@15 {
+		compatible = "ethernet-phy-id03a2.a411";
+		reg = <15>;
+
+		airoha,rx-pol-reverse;
+
+		reset-gpios = <&gpio 47 GPIO_ACTIVE_LOW>;
+		reset-assert-us = <10000>;
+		reset-deassert-us = <20000>;
+	};*/
+};
+
+&mmc0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&mmc0_pins_default>;
+	bus-width = <8>;
+	max-frequency = <200000000>;
+	cap-mmc-highspeed;
+	cap-mmc-hw-reset;
+	vmmc-supply = <&reg_3p3v>;
+	vqmmc-supply = <&reg_1p8v>;
+	non-removable;
+	status = "okay";
+};
+
+&pinctrl {
+	/*en8811_pwr_a: en8811-pwr-a {
+		pins = "GPIO_11";
+		drive-strength = <MTK_DRIVE_8mA>;
+		bias-pull-down = <MTK_PUPD_SET_R1R0_11>;
+		output-low;
+	};
+
+	en8811_pwr_b: en8811-pwr-b {
+		pins = "GPIO_12";
+		drive-strength = <MTK_DRIVE_8mA>;
+		bias-pull-down = <MTK_PUPD_SET_R1R0_11>;
+		output-low;
+	};*/
+
+	mdio_pins: mdio-pins {
+		mux {
+			function = "eth";
+			groups = "mdc_mdio";
+		};
+	};
+
+	mmc0_pins_default: mmc0default {
+		mux {
+			function = "flash";
+			groups =  "emmc_51";
+		};
+
+		conf-cmd-dat {
+			pins = "EMMC_DATA_0", "EMMC_DATA_1", "EMMC_DATA_2",
+			       "EMMC_DATA_3", "EMMC_DATA_4", "EMMC_DATA_5",
+			       "EMMC_DATA_6", "EMMC_DATA_7", "EMMC_CMD";
+			input-enable;
+			drive-strength = <MTK_DRIVE_4mA>;
+			bias-pull-up = <MTK_PUPD_SET_R1R0_01>;
+		};
+
+		conf-clk {
+			pins = "EMMC_CK";
+			drive-strength = <MTK_DRIVE_6mA>;
+			bias-pull-down = <MTK_PUPD_SET_R1R0_10>;
+		};
+
+		conf-dsl {
+			pins = "EMMC_DSL";
+			bias-pull-down = <MTK_PUPD_SET_R1R0_10>;
+		};
+
+		conf-rst {
+			pins = "EMMC_RSTB";
+			drive-strength = <MTK_DRIVE_4mA>;
+			bias-pull-up = <MTK_PUPD_SET_R1R0_01>;
+		};
+	};
+
+	spi_flash_pins: spi0-pins-func-1 {
+		mux {
+			function = "flash";
+			groups = "spi0", "spi0_wp_hold";
+		};
+
+		conf-pu {
+			pins = "SPI2_CS", "SPI2_HOLD", "SPI2_WP";
+			drive-strength = <MTK_DRIVE_8mA>;
+			bias-pull-up = <MTK_PUPD_SET_R1R0_11>;
+		};
+
+		conf-pd {
+			pins = "SPI2_CLK", "SPI2_MOSI", "SPI2_MISO";
+			drive-strength = <MTK_DRIVE_8mA>;
+			bias-pull-down = <MTK_PUPD_SET_R1R0_11>;
+		};
+	};
+
+	pwm_pins: pwm0-pins-func-1 {
+		mux {
+			function = "pwm";
+			groups = "pwm0";
+		};
+	};
+};
+
+&pwm {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pwm_pins>;
+	status = "okay";
+};
+
+&spi0 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi_flash_pins>;
+	status = "okay";
+	must_tx;
+	enhance_timing;
+	dma_ext;
+	ipm_design;
+	support_quad;
+	tick_dly = <1>;
+	sample_sel = <0>;
+
+	spi_nand@0 {
+		compatible = "spi-nand";
+		reg = <0>;
+		spi-max-frequency = <52000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "bl2";
+				reg = <0x0 0x80000>;
+			};
+
+			partition@100000 {
+				label = "orig-env";
+				reg = <0x100000 0x80000>;
+			};
+
+			partition@80000 {
+				label = "factory";
+				reg = <0x80000 0x300000>;
+			};
+
+			partition@380000 {
+				label = "fip";
+				reg = <0x380000 0x200000>;
+			};
+
+			partition@580000 {
+				label = "ubi";
+				reg = <0x580000 0x7a80000>;
+			};
+		};
+	};
+
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&watchdog {
+	status = "disabled";
+};

build.conf

@@ -6,6 +6,7 @@ board=bpi-r2
 #board=bpi-r64
 #board=bpi-r2pro
 #board=bpi-r3
+#board=bpi-r3mini
 #board=bpi-r4
 
 #device=emmc

build.sh

@@ -93,7 +93,7 @@ case $board in
 		export CROSS_COMPILE=aarch64-linux-gnu-
 		UBOOT_FILE=u-boot-rockchip.bin
 	;;
-	"bpi-r3")
+	"bpi-r3"|"bpi-r3mini")
 		export ARCH=arm64
 		export CROSS_COMPILE=aarch64-linux-gnu-
 
@@ -105,6 +105,11 @@ case $board in
 		FILE_DEFCFG=mt7986a_bpir3_${dev}_defconfig
 
 		DTS=mt7986a-bpi-r3-${dev}
+		if [[ "$board" == "bpi-r3mini" ]];
+		then
+			FILE_DEFCFG=mt7986a_bpir3mini_emmc_defconfig
+			DTS=mt7986a-bpi-r3-mini
+		fi
 		FILE_DTS=arch/arm/dts/${DTS}.dts
 		FILE_DTSI=arch/arm/dts/mt7986.dtsi