arm64: dts: Add spi bus dts

This patch adds MT8173 spi bus controllers into device tree.
Signed-off-by: Leilk Liu <leilk.liu@mediatek.com>
Reviewed-and-Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arch/arm64/boot/dts/mediatek/mt8173-evb.dts

@@ -387,6 +387,24 @@ mt6397_vibr_reg: ldo_vibr {
 	};
 };
 
+&pio {
+	spi_pins_a: spi0 {
+		pins_spi {
+			pinmux = <MT8173_PIN_69_SPI_CK__FUNC_SPI_CK_0_>,
+				<MT8173_PIN_70_SPI_MI__FUNC_SPI_MI_0_>,
+				<MT8173_PIN_71_SPI_MO__FUNC_SPI_MO_0_>,
+				<MT8173_PIN_72_SPI_CS__FUNC_SPI_CS_0_>;
+		};
+	};
+};
+
+&spi {
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi_pins_a>;
+	mediatek,pad-select = <0>;
+	status = "okay";
+};
+
 &uart0 {
 	status = "okay";
 };

arch/arm64/boot/dts/mediatek/mt8173.dtsi

@@ -365,6 +365,19 @@ i2c2: i2c@11009000 {
 			status = "disabled";
 		};
 
+		spi: spi@1100a000 {
+			compatible = "mediatek,mt8173-spi";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0 0x1100a000 0 0x1000>;
+			interrupts = <GIC_SPI 110 IRQ_TYPE_LEVEL_LOW>;
+			clocks = <&topckgen CLK_TOP_SYSPLL3_D2>,
+				 <&topckgen CLK_TOP_SPI_SEL>,
+				 <&pericfg CLK_PERI_SPI0>;
+			clock-names = "parent-clk", "sel-clk", "spi-clk";
+			status = "disabled";
+		};
+
 		i2c3: i2c@11010000 {
 			compatible = "mediatek,mt8173-i2c";
 			reg = <0 0x11010000 0 0x70>,