LoongArch: dts: Add SDIO controller support to Loongson-2K0500

The Loongson-2K0500 integrates two SDIO controllers for SD storage cards
and SDIO cards, supporting SD storage card boot.

The module is supported now, enable it.

Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

Author: AaronDot

arch/loongarch/boot/dts/loongson-2k0500-ref.dts

@@ -41,6 +41,15 @@
 	};
 };
 
+&apbdma3 {
+	status = "okay";
+};
+
+&mmc0 {
+	status = "okay";
+	bus-width = <4>;
+};
+
 &gmac0 {
 	status = "okay";
 

arch/loongarch/boot/dts/loongson-2k0500.dtsi

@@ -104,7 +104,7 @@
 			status = "disabled";
 		};
 
-		dma-controller@1fe10c20 {
+		apbdma2: dma-controller@1fe10c20 {
 			compatible = "loongson,ls2k0500-apbdma", "loongson,ls2k1000-apbdma";
 			reg = <0 0x1fe10c20 0 0x8>;
 			interrupt-parent = <&eiointc>;
@@ -114,7 +114,7 @@
 			status = "disabled";
 		};
 
-		dma-controller@1fe10c30 {
+		apbdma3: dma-controller@1fe10c30 {
 			compatible = "loongson,ls2k0500-apbdma", "loongson,ls2k1000-apbdma";
 			reg = <0 0x1fe10c30 0 0x8>;
 			interrupt-parent = <&eiointc>;
@@ -437,6 +437,30 @@
 			status = "disabled";
 		};
 
+		mmc0: mmc@1ff64000 {
+			compatible = "loongson,ls2k0500-mmc";
+			reg = <0 0x1ff64000 0 0x2000>,
+			      <0 0x1fe10100 0 0x4>;
+			interrupt-parent = <&eiointc>;
+			interrupts = <57>;
+			dmas = <&apbdma3 0>;
+			dma-names = "rx-tx";
+			clocks = <&clk LOONGSON2_APB_CLK>;
+			status = "disabled";
+		};
+
+		mmc@1ff66000 {
+			compatible = "loongson,ls2k0500-mmc";
+			reg = <0 0x1ff66000 0 0x2000>,
+			      <0 0x1fe10100 0 0x4>;
+			interrupt-parent = <&eiointc>;
+			interrupts = <58>;
+			dmas = <&apbdma2 0>;
+			dma-names = "rx-tx";
+			clocks = <&clk LOONGSON2_APB_CLK>;
+			status = "disabled";
+		};
+
 		pmc: power-management@1ff6c000 {
 			compatible = "loongson,ls2k0500-pmc", "syscon";
 			reg = <0x0 0x1ff6c000 0x0 0x58>;