loongson: 2k1000: sdio: add sdio desc

Changelog: 2k1000 dts添加sdio的描述
Signed-off-by: maoxiaochuan <maoxiaochuan@loongson.cn>

arch/loongarch/boot/dts/loongson2k1000.dtsi

@@ -332,6 +332,13 @@
 				};
 			};
 
+			sdio_default:sdio_as_default {
+				mux {
+					groups = "sdio";
+					function = "sdio";
+				};
+			};
+
 			lio_default:lio {
 				mux {
 					groups = "dvo0_lio_uart";
@@ -610,6 +617,24 @@
 			status = "disabled";
 		};
 
+		sdio0: sdio@0x1fe2c000 {
+			#address-cells = <2>;
+			compatible = "loongson,ls2k_sdio_1.1";
+			reg = <0 0x1fe2c000 0 0x100>;
+			interrupt-parent = <&liointc0>;
+			interrupts = <31 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "ls2k_mci_irq";
+			dma-mask = <0xffffffff 0xffffffff>;
+			clock-frequency = <0 125000000>;
+			dmas = <&dma 3 0xaae>;
+			dma-names = "sdio_rw";
+			bus-width = <4>;
+			max-frequency = <25000000>;
+			pinctrl-0 = <&sdio_default>;
+			pinctrl-names = "default";
+			status = "disabled";
+		};
+
 		pmc: power-management@1fe27000 {
 			compatible = "loongson,ls2k1000-pmc", "loongson,ls2k0500-pmc", "syscon";
 			reg = <0x0 0x1fe27000 0x0 0x58>;