dts: stm32h7: Add OTG FS to DTS of the STM32H7 series

This has been verified running samples usb/console and
usb/cdc_acm on a STM32H747XIH.

Signed-off-by: Benjamin Björnsson <[email protected]>

Author: benjaminbjornsson

dts/arm/st/h7/stm32h745.dtsi

@@ -38,6 +38,19 @@
 			clocks = <&rcc STM32_CLOCK_BUS_APB3 0x00000008>;
 			status = "disabled";
 		};
+
+		usbotg_fs: usb@40080000 {
+			compatible = "st,stm32-otgfs";
+			reg = <0x40080000 0x40000>;
+			interrupts = <98 0>, <99 0>, <100 0>, <101 0>;
+			interrupt-names = "ep1_out", "ep1_in", "wkup", "otgfs";
+			num-bidir-endpoints = <9>;
+			ram-size = <4096>;
+			maximum-speed = "full-speed";
+			clocks = <&rcc STM32_CLOCK_BUS_AHB1 0x08000000>;
+			phys = <&otghs_fs_phy>;
+			status = "disabled";
+		};
 	};
 	/*
 	* The RAM memories placed here can be used by both cores M4/M7
@@ -78,4 +91,9 @@
 		compatible = "zephyr,memory-region", "mmio-sram";
 		zephyr,memory-region = "SRAM4";
 	};
+
+	otghs_fs_phy: otghs_fs_phy {
+		compatible = "usb-nop-xceiv";
+		#phy-cells = <0>;
+	};
 };