fix: 2k1000la 4.3 inch touch panel.

arch/loongarch/boot/dts/loongson/ls2k1000_dp.dts

@@ -338,6 +338,10 @@
 &i2c1 {
 	status = "okay";
 
+	// 两款芯片不能同时支持，因为用同一个GPIO
+	// 但可以在两个屏幕间切换
+
+	// 7寸触屏芯片
 	touchpad: gt911@5d {
 		compatible = "goodix,gt911";
 		reg = <0x5d>;
@@ -345,6 +349,17 @@
 		interrupts = <60>;
 		irq-gpios = <&pioA 0 GPIO_ACTIVE_LOW>;
 	};
+
+	// 4.3寸触屏芯片
+	touchpad_1: gt9147@14 {
+		compatible = "goodix,gt9147";
+		reg = <0x14>;
+		// 2K300 GPIO 支持中断控制
+		// GPIO 中断号为 vhwirq-base + pinnum (210 = 128 + 82)
+		interrupt-parent = <&icu>;
+		interrupts = <60>;
+		irq-gpios = <&pioA 0 GPIO_ACTIVE_LOW>;
+	};
 };
 
 &uart1 {

arch/loongarch/loongson64/init.c

@@ -243,11 +243,11 @@ static void *get_fdt_by_board_name(void)
 			if (check_cpu_full_name_invaild(i))
 				__cpu_full_name[i] = cpu_ls2k500_name;
 #elif defined(CONFIG_LOONGSON_2K1000)
-		if (!strncmp(b_info.board_name, "LS2K1000-JL-MB", 14)) {
+		/* if (!strncmp(b_info.board_name, "LS2K1000-JL-MB", 14)) {
 			fdt = &__dtb_ls2k1000_jl_mb_begin;
 		} else if (!strncmp(b_info.board_name, "LS2K1000-DP", 11)) {
 			fdt = &__dtb_ls2k1000_dp_begin;
-		} else {
+		} else */{
 			fdt = &__dtb_ls2k1000_dp_begin;
 		}
 #elif defined(CONFIG_LOONGSON_2P500)