arm64: dts: visconti: Add PCIe host controller support for TMPV7708 SoC

Add PCIe node and fixed clock for PCIe in TMPV7708's dtsi,
and tmpv7708-rm-mbrc boards's dts.
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
Link: https://lore.kernel.org/r/20210907042500.1525771-1-nobuhiro1.iwamatsu@toshiba.co.jp

arch/arm64/boot/dts/toshiba/tmpv7708-rm-mbrc.dts

@@ -76,3 +76,9 @@ &pwm_mux {
 &pwm {
 	status = "okay";
 };
+
+&pcie {
+	status = "okay";
+	clocks = <&extclk100mhz>, <&clk600mhz>, <&clk25mhz>;
+	clock-names = "ref", "core", "aux";
+};

arch/arm64/boot/dts/toshiba/tmpv7708.dtsi

@@ -134,6 +134,13 @@ uart_clk: uart-clk {
 		#clock-cells = <0>;
 	};
 
+	clk25mhz: clk25mhz {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <25000000>;
+		clock-output-names = "clk25mhz";
+	};
+
 	clk125mhz: clk125mhz {
 		compatible = "fixed-clock";
 		clock-frequency = <125000000>;
@@ -148,6 +155,20 @@ clk300mhz: clk300mhz {
 		clock-output-names = "clk300mhz";
 	};
 
+	clk600mhz: clk600mhz {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <600000000>;
+		clock-output-names = "clk600mhz";
+	};
+
+	extclk100mhz: extclk100mhz {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <100000000>;
+		clock-output-names = "extclk100mhz";
+	};
+
 	wdt_clk: wdt-clk {
 		compatible = "fixed-clock";
 		clock-frequency = <150000000>;
@@ -441,6 +462,37 @@ pwm: pwm@241c0000 {
 			#pwm-cells = <2>;
 			status = "disabled";
 		};
+
+		pcie: pcie@28400000 {
+			compatible = "toshiba,visconti-pcie";
+			reg = <0x0 0x28400000 0x0 0x00400000>,
+			      <0x0 0x70000000 0x0 0x10000000>,
+			      <0x0 0x28050000 0x0 0x00010000>,
+			      <0x0 0x24200000 0x0 0x00002000>,
+			      <0x0 0x24162000 0x0 0x00001000>;
+			reg-names  = "dbi", "config", "ulreg", "smu", "mpu";
+			device_type = "pci";
+			bus-range = <0x00 0xff>;
+			num-lanes = <2>;
+			num-viewport = <8>;
+
+			#address-cells = <3>;
+			#size-cells = <2>;
+			#interrupt-cells = <1>;
+			ranges = <0x81000000 0 0x40000000 0 0x40000000 0 0x00010000
+				  0x82000000 0 0x50000000 0 0x50000000 0 0x20000000>;
+			interrupts = <GIC_SPI 211 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 215 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "msi", "intr";
+			interrupt-map-mask = <0 0 0 7>;
+			interrupt-map =
+				<0 0 0 1 &gic GIC_SPI 215 IRQ_TYPE_LEVEL_HIGH
+				 0 0 0 2 &gic GIC_SPI 215 IRQ_TYPE_LEVEL_HIGH
+				 0 0 0 3 &gic GIC_SPI 215 IRQ_TYPE_LEVEL_HIGH
+				 0 0 0 4 &gic GIC_SPI 215 IRQ_TYPE_LEVEL_HIGH>;
+			max-link-speed = <2>;
+			status = "disabled";
+		};
 	};
 };