+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Copyright (C) 2023 Allen Zhao <allenzhao@unielecinc.com>
+ */
+
+/dts-v1/;
+#include "mt7981b-unielec-u7981-01.dtsi"
+/ {
+ model = "Unielec U7981-01 (NAND)";
+ compatible = "unielec,u7981-01-nand", "mediatek,mt7981";
+};
+
+&spi0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi0_flash_pins>;
+ status = "okay";
+ spi_nand: 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>;
+
+ mediatek,nmbm;
+ mediatek,bmt-max-ratio = <1>;
+ mediatek,bmt-max-reserved-blocks = <64>;
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition@0 {
+ label = "bl2";
+ reg = <0x00000 0x0100000>;
+ read-only;
+ };
+
+ partition@100000 {
+ label = "u-boot-env";
+ reg = <0x0100000 0x0080000>;
+ };
+
+ factory: partition@180000 {
+ label = "factory";
+ reg = <0x180000 0x200000>;
+ read-only;
+
+ compatible = "nvmem-cells";
+ nvmem-layout {
+ compatible = "fixed-layout";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ eeprom_factory_0: eeprom@0 {
+ reg = <0x0 0x1000>;
+ };
+
+ macaddr_factory_1000: macaddr@1000 {
+ compatible = "mac-base";
+ reg = <0x1000 0x6>;
+ #nvmem-cell-cells = <1>;
+ };
+ };
+ };
+
+ partition@380000 {
+ label = "fip";
+ reg = <0x380000 0x0200000>;
+ };
+
+ partition@580000 {
+ label = "ubi";
+ reg = <0x580000 0x4000000>;
+ };
+ };
+ };
+};
+
+&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 = <8>;
+ mediatek,pull-up-adv = <0>; /* bias-disable */
+ };
+
+ conf-pd {
+ pins = "SPI0_CLK", "SPI0_MOSI", "SPI0_MISO";
+ drive-strength = <8>;
+ mediatek,pull-up-adv = <0>; /* bias-disable */
+ };
+ };
+};
+
+&gmac0 {
+ nvmem-cells = <&macaddr_factory_1000 0>;
+ nvmem-cell-names = "mac-address";
+};
+
+&gmac1 {
+ nvmem-cells = <&macaddr_factory_1000 1>;
+ nvmem-cell-names = "mac-address";
+};
+
+&wifi {
+ nvmem-cells = <&eeprom_factory_0>;
+ nvmem-cell-names = "eeprom";
+ status = "okay";
+};