diff --git a/arch/loongarch/boot/dts/Makefile b/arch/loongarch/boot/dts/Makefile
index 09e1b775b..0c59047e8 100644
--- a/arch/loongarch/boot/dts/Makefile
+++ b/arch/loongarch/boot/dts/Makefile
@@ -4,7 +4,7 @@
 
 ifdef CONFIG_DTB_MATCH_BY_BOARD_NAME
 dtb-$(CONFIG_LOONGSON_2K300) += ls2k300_mini_dp.dtb ls2k300_vanguard_pi.dtb ls2k300_gongkong_gbkpgk0.dtb \
-				ls2k300_alientek.dtb
+				ls2k300_alientek.dtb ls2k300_99pi_wifi.dtb
 dtb-$(CONFIG_LOONGSON_2K1000) += ls2k1000_dp.dtb
 
 obj-y += $(patsubst %.dtb, %.dtb.o, $(dtb-y))
diff --git a/arch/loongarch/boot/dts/loongson-2k0300.dtsi b/arch/loongarch/boot/dts/loongson-2k0300.dtsi
index 50fba799c..fd7e3db36 100644
--- a/arch/loongarch/boot/dts/loongson-2k0300.dtsi
+++ b/arch/loongarch/boot/dts/loongson-2k0300.dtsi
@@ -138,6 +138,10 @@
 		pinctrl-single,register-width = <32>;
 		pinctrl-single,function-mask = <0x3>;
 
+		uart0_pins: pinmux_G40_G41_as_uart0 {
+			pinctrl-single,bits = <0x8 0x000f0000 0x000f0000>;
+		};
+
 		uart1_pins: pinmux_G42_G43_as_uart1 {
 			pinctrl-single,bits = <0x8 0x00f00000 0x00f00000>;
 		};
@@ -206,8 +210,25 @@
 			pinctrl-single,bits = <0x14 0x00000a00 0x000000f00>;
 		};
 
+		spi0_pins: pinmux_G56_G59_as_spi0 {
+			pinctrl-single,bits = <0xc 0x00ff0000 0x00ff0000>;
+		};
+
+		qspi0_pins: pinmux_G56_G59_G69_G70_as_qspi0 {
+			pinctrl-single,bits = <0xc 0x00ff0000 0x00ff0000
+						0x10 0x00001400 0x00003c00>;
+		};
+
+		spi0_cs1: pinmux_G68_as_spi0_cs {
+			pinctrl-single,bits = <0x10 0x00000100 0x00000300>;
+		};
+
 		spi1_pins: pinmux_G60_G63_as_spi1 {
-			pinctrl-single,bits = <0xc 0xff000000 0xff000000>;
+				pinctrl-single,bits = <0xc 0xff000000 0xff000000>;
+		};
+
+		spi1_cs_as_gpio: pinmux_G60_G62_as_spi1 {
+			pinctrl-single,bits = <0xc 0x3f000000 0x3f000000>;
 		};
 
 		spi2_pins: pinmux_G64_G67_as_spi2 {
@@ -354,20 +375,52 @@
 			};
 		};
 
-		pwm0_pins: pinmux_G86_as_pwm0 {
-			pinctrl-single,bits = <0x14 0x00002000 0x00003000>;
+		pwm0_pins: pwm0-pins {
+			pwm0_mux_m0: pinmux_G64_as_pwm0 {
+				pinctrl-single,bits = <0x10 0x00000001 0x00000003>;
+			};
+			pwm0_mux_m1: pinmux_G86_as_pwm0 {
+				pinctrl-single,bits = <0x14 0x00002000 0x00003000>;
+			};
+			pwm0_mux_m2: pinmux_G102_as_pwm0 {
+				pinctrl-single,bits = <0x18 0x00003000 0x00003000>;
+			};
 		};
 
-		pwm1_pins: pinmux_G87_as_pwm1 {
-			pinctrl-single,bits = <0x14 0x00008000 0x0000c000>;
+		pwm1_pins: pwm1-pins {
+			pwm1_mux_m0: pinmux_G65_as_pwm1 {
+				pinctrl-single,bits = <0x10 0x00000004 0x0000000c>;
+			};
+			pwm1_mux_m1: pinmux_G87_as_pwm1 {
+				pinctrl-single,bits = <0x14 0x00008000 0x0000c000>;
+			};
+			pwm1_mux_m2: pinmux_G103_as_pwm1 {
+				pinctrl-single,bits = <0x18 0x0000c000 0x0000c000>;
+			};
+		};
+		
+		pwm2_pins: pwm2-pins {
+			pwm2_mux_m0: pinmux_G66_as_pwm2 {
+				pinctrl-single,bits = <0x10 0x00000010 0x00000030>;
+			};
+			pwm2_mux_m1: pinmux_G88_as_pwm2 {
+				pinctrl-single,bits = <0x14 0x00020000 0x00030000>;
+			};
+			pwm2_mux_m2: pinmux_G104_as_pwm2 {
+				pinctrl-single,bits = <0x18 0x00030000 0x00030000>;
+			};
 		};
 
-		pwm2_pins: pinmux_G88_as_pwm2 {
-			pinctrl-single,bits = <0x14 0x00020000 0x00030000>;
-		};
-
-		pwm3_pins: pinmux_G89_as_pwm3 {
-			pinctrl-single,bits = <0x14 0x00080000 0x000c0000>;
+		pwm3_pins: pwm3-pins {
+			pwm3_mux_m0: pinmux_G67_as_pwm3 {
+				pinctrl-single,bits = <0x10 0x00000040 0x000000c0>;
+			};
+			pwm3_mux_m1: pinmux_G89_as_pwm3 {
+				pinctrl-single,bits = <0x14 0x00080000 0x000c0000>;
+			};
+			pwm3_mux_m2: pinmux_G105_as_pwm3 {
+				pinctrl-single,bits = <0x18 0x000c0000 0x000c0000>;
+			};
 		};
 
 		tim1_ch1:pinmux_G81_as_tim1_ch1 {
@@ -442,6 +495,9 @@
 			interrupt-parent = <&liointc0>;
 			interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
 			no-loopback-test;
+			pinctrl-0 = <&uart0_pins>;
+			pinctrl-names = "default";
+			status = "disabled";
 		};
 
 		uart1: serial@0x16100400 {
@@ -737,6 +793,8 @@
 			interrupt-parent = <&liointc1>;
 			interrupts = <12 IRQ_TYPE_LEVEL_HIGH>; // 44 - 32 = 12
 			clock-frequency = <200000000>;
+			pinctrl-0 = <&spi0_pins>;
+			pinctrl-names = "default";
 			status = "disabled";
 		};
 
@@ -906,7 +964,7 @@
 			interrupt-parent = <&liointc0>;
 			interrupts = <16 IRQ_TYPE_LEVEL_HIGH>;
 			#pwm-cells = <2>;
-			pinctrl-0 = <&pwm0_pins>;
+			pinctrl-0 = <&pwm0_mux_m1>;
 			pinctrl-names = "default";
 			clock-frequency = <200000000>;
 			status = "disabled";
@@ -918,7 +976,7 @@
 			interrupt-parent = <&liointc0>;
 			interrupts = <16 IRQ_TYPE_LEVEL_HIGH>;
 			#pwm-cells = <2>;
-			pinctrl-0 = <&pwm1_pins>;
+			pinctrl-0 = <&pwm1_mux_m1>;
 			pinctrl-names = "default";
 			clock-frequency = <200000000>;
 			status = "disabled";
@@ -930,7 +988,7 @@
 			interrupt-parent = <&liointc0>;
 			interrupts = <17 IRQ_TYPE_LEVEL_HIGH>;
 			#pwm-cells = <2>;
-			pinctrl-0 = <&pwm2_pins>;
+			pinctrl-0 = <&pwm2_mux_m1>;
 			pinctrl-names = "default";
 			clock-frequency = <200000000>;
 			status = "disabled";
@@ -942,7 +1000,7 @@
 			interrupt-parent = <&liointc0>;
 			interrupts = <17 IRQ_TYPE_LEVEL_HIGH>;
 			#pwm-cells = <2>;
-			pinctrl-0 = <&pwm3_pins>;
+			pinctrl-0 = <&pwm3_mux_m1>;
 			pinctrl-names = "default";
 			clock-frequency = <200000000>;
 			status = "disabled";
@@ -1057,7 +1115,7 @@
 			compatible = "loongson,ls-pcm-generic-audio";
 			reg = <0 0x16114000 0 0x4000>;
 			dmas = <&dma 0 0xaf
-			        &dma 1 0xbf>;
+					&dma 1 0xbf>;
 			dma-names = "i2s_record", "i2s_play";
 			dma-mask = <0xffffffff 0xffffffff>;
 			status = "disabled";
diff --git a/arch/loongarch/boot/dts/ls2k300_99pi_wifi.dts b/arch/loongarch/boot/dts/ls2k300_99pi_wifi.dts
new file mode 100644
index 000000000..c18776b7e
--- /dev/null
+++ b/arch/loongarch/boot/dts/ls2k300_99pi_wifi.dts
@@ -0,0 +1,191 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2025 Loongson Technology Corporation Limited
+ */
+
+/dts-v1/;
+
+#include "loongson-2k0300.dtsi"
+#include "loongson_panel_param.dtsi"
+
+/ {
+	model = "LS2K300-99PI-WIFI";
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+		bootargs = "earlycon";
+	};
+
+	/* not need memory node, we get memory info from boot params. */
+
+	leds {
+		compatible = "gpio-leds";
+
+		led1 {
+			label = "led1";
+			gpios = <&gpio 83 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "heartbeat";
+			default-state = "on";
+		};
+	};
+
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		linux,cma {
+			compatible = "shared-dma-pool";
+			reusable;
+			size = <0 0x02000000>;
+			linux,cma-default;
+		};
+	};
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&uart1 {
+	status = "okay";
+};
+
+&uart2 {
+	status = "okay";
+};
+
+&gmac0 {
+	status = "okay";
+	phy-handle = <&yt8511h0>;
+	mdio {
+		compatible = "snps,dwmac-mdio";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		yt8511h0: ethernet-phy@0 {
+			compatible = "ethernet-phy-ieee802.3-c22";
+			reg = <0>;
+			motorcomm,led0_cfg = <0x40>; //千兆常亮
+			motorcomm,led1_cfg = <0x30>; //百兆 十兆常亮
+			motorcomm,led2_cfg = <0x2600>; //有数据时闪烁
+		};
+	};
+};
+
+&i2c0 {
+	status = "okay";
+};
+
+&i2c1 {
+	status = "okay";
+};
+
+&i2c2 {
+	status = "disabled"; // 在 LCD 排线处
+};
+
+&spi0 {
+	status = "okay";
+	pinctrl-0 = <&qspi0_pins>;
+	pinctrl-names = "default";
+
+	spi-flash@0 {
+		compatible = "jedec,spi-nor";
+		spi-max-frequency = <25000000>;
+		reg = <0>;
+	};
+};
+
+&spi1 {
+	status = "okay";
+
+	spidev0@0 {
+		compatible = "rohm,dh2228fv";
+		reg = <0>;
+		spi-max-frequency = <25000000>;
+	};
+};
+
+&spi2 {
+	status = "okay"; // 与 PWM0-3 的 MUX0 冲突
+
+	spidev1@0 {
+		compatible = "rohm,dh2228fv";
+		reg = <0>;
+		spi-max-frequency = <25000000>;
+	};
+};
+
+&timers1 {
+	status = "okay";
+	/delete-property/ dmas;
+	/delete-property/ dma-names;
+	pinctrl-0 = <&atim3n_pin_m1>; // LCD PWM 背光，备用
+	pinctrl-names = "default";
+
+	pwm {
+		compatible = "loongson,ls2k-pwm-timer";
+		#pwm-cells = <2>;
+		status = "okay";
+	};
+};
+
+&timers2 {
+	status = "okay";
+	dmas = <&dma 2 0x400>, <&dma 3 0x400>;
+	dma-names = "ch3", "ch4";
+	pinctrl-0 = <&gtim2_pin_m1>, <&gtim3_pin_m1>;
+	pinctrl-names = "default";
+
+	pwm {
+		compatible = "loongson,ls2k-pwm-timer";
+		#pwm-cells = <2>;
+		status = "okay";
+	};
+};
+
+&pwm0 {
+	status = "disabled";
+	pinctrl-0 = <&pwm0_mux_m0>;
+	pinctrl-names = "default";
+};
+
+&pwm1 {
+	status = "disabled";
+	pinctrl-0 = <&pwm1_mux_m0>;
+	pinctrl-names = "default";
+};
+
+&pwm2 {
+	status = "disabled";
+	pinctrl-0 = <&pwm2_mux_m0>;
+	pinctrl-names = "default";
+};
+
+&pwm3 {
+	status = "disabled";
+	pinctrl-0 = <&pwm3_mux_m0>;
+	pinctrl-names = "default";
+};
+
+&can2 {
+	status = "okay";
+};
+
+&can3 {
+	status = "okay";
+};
+
+&adc {
+	status = "okay";
+};
+
+&rtc0 {
+	status = "okay";
+};
+
+&sdio1 {
+	cd-gpios = <&gpio 82 GPIO_ACTIVE_LOW>;
+	status = "okay";
+};
diff --git a/arch/loongarch/include/asm/mach/boot_param.h b/arch/loongarch/include/asm/mach/boot_param.h
index 071fca3ce..23284b28d 100644
--- a/arch/loongarch/include/asm/mach/boot_param.h
+++ b/arch/loongarch/include/asm/mach/boot_param.h
@@ -115,6 +115,7 @@ extern u32 __dtb_ls2k300_mini_dp_begin[];
 extern u32 __dtb_ls2k300_vanguard_pi_begin[];
 extern u32 __dtb_ls2k300_gongkong_gbkpgk0_begin[];
 extern u32 __dtb_ls2k300_alientek_begin[];
+extern u32 __dtb_ls2k300_99pi_wifi_begin[];
 extern char __dtb_start[];
 extern struct boot_params *efi_bp;
 extern struct loongson_board_info b_info;
diff --git a/arch/loongarch/kernel/setup.c b/arch/loongarch/kernel/setup.c
index 0fafe6783..e44658332 100644
--- a/arch/loongarch/kernel/setup.c
+++ b/arch/loongarch/kernel/setup.c
@@ -310,6 +310,7 @@ char *board_names[] = {
 	"LS2K300-PAI",
 	"LS2K300-GONGKONG-GBKPGK0",
 	"LS2K300-ATK-DL2K0300B-V01",
+	"LS2K300-99PI-WIFI",
 #endif
 	NULL
 };
@@ -330,6 +331,7 @@ void *fdts[] = {
 	&__dtb_ls2k300_vanguard_pi_begin,
 	&__dtb_ls2k300_gongkong_gbkpgk0_begin,
 	&__dtb_ls2k300_alientek_begin,
+	&__dtb_ls2k300_99pi_wifi_begin,
 #endif
 	NULL
 };