chore: squash previous commits from other branches

src/common/tusb_mcu.h

@@ -322,6 +322,15 @@
   // MCU with on-chip HS Phy
   #define TUP_RHPORT_HIGHSPEED    1
 
+#elif TU_CHECK_MCU(OPT_MCU_STM32N6)
+  #define TUP_USBIP_DWC2
+  #define TUP_USBIP_DWC2_STM32
+
+  #define TUP_DCD_ENDPOINT_MAX    9
+
+  // MCU with on-chip HS Phy
+  #define TUP_RHPORT_HIGHSPEED    2
+
 //--------------------------------------------------------------------+
 // Sony
 //--------------------------------------------------------------------+

src/portable/synopsys/dwc2/dcd_dwc2.c

@@ -425,6 +425,11 @@ bool dcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
   // Clear A override, force B Valid
   dwc2->gotgctl = (dwc2->gotgctl & ~GOTGCTL_AVALOEN) | GOTGCTL_BVALOEN | GOTGCTL_BVALOVAL;
 
+#if CFG_TUSB_MCU == OPT_MCU_STM32N6
+  // No hardware detection of Vbus B-session is available on the STM32N6
+  dwc2->stm32_gccfg |= STM32_GCCFG_VBVALOVAL;
+#endif
+
   // Enable required interrupts
   dwc2->gintmsk |= GINTMSK_OTGINT | GINTMSK_USBSUSPM | GINTMSK_USBRST | GINTMSK_ENUMDNEM | GINTMSK_WUIM;
 

src/portable/synopsys/dwc2/dwc2_info.py

@@ -22,6 +22,7 @@ dwc2_reg_value = {
     'ST H743/H750': [0x2300, 0x4F54330A, 0, 0x229FE190, 0x03B8D2E8, 0xE3F00030],
     'ST L476 FS': [0x2000, 0x4F54310A, 0, 0x229ED520, 0x0200D1E8, 0x17F08030],
     'ST U5A5 HS': [0x5000, 0x4F54411A, 0, 0x228FE052, 0x03B882E8, 0xE2103E30],
+    'ST N6xx HS': [0x5000, 0x4F54411A, 0, 0x228FE052, 0x03B882E8, 0xE2103E30],
     'XMC4500': [0xAEC000, 0x4F54292A, 0, 0x228F5930, 0x027A01E5, 0xDBF08030],
     'GD32VF103': [0x1000, 0, 0, 0, 0, 0],
 }

src/portable/synopsys/dwc2/dwc2_stm32.h

@@ -77,6 +77,17 @@ extern "C" {
   #define EP_MAX_HS       9
   #define EP_FIFO_SIZE_HS 4096
 
+#elif CFG_TUSB_MCU == OPT_MCU_STM32N6
+  #include "stm32n6xx.h"
+  #define EP_MAX_FS       6
+  #define EP_FIFO_SIZE_FS 1280
+
+  #define EP_MAX_HS       9
+  #define EP_FIFO_SIZE_HS 4096
+
+  #define USB_OTG_HS_PERIPH_BASE    USB1_OTG_HS_BASE
+  #define OTG_HS_IRQn               USB1_OTG_HS_IRQn
+
 #elif CFG_TUSB_MCU == OPT_MCU_STM32F7
   #include "stm32f7xx.h"
   #define EP_MAX_FS       6

src/portable/synopsys/dwc2/hcd_dwc2.c

@@ -381,6 +381,10 @@ bool hcd_init(uint8_t rhport, const tusb_rhport_init_t* rh_init) {
 
   // force host mode and wait for mode switch
   dwc2->gusbcfg = (dwc2->gusbcfg & ~GUSBCFG_FDMOD) | GUSBCFG_FHMOD;
+#if CFG_TUSB_MCU == OPT_MCU_STM32N6
+  // No hardware detection of Vbus B-session is available on the STM32N6
+  dwc2->stm32_gccfg &= ~STM32_GCCFG_VBVALOVAL;
+#endif
   while ((dwc2->gintsts & GINTSTS_CMOD) != GINTSTS_CMODE_HOST) {}
 
   // configure fixed-allocated fifo scheme

src/tusb_option.h

@@ -94,6 +94,7 @@
 #define OPT_MCU_STM32U0           316 ///< ST U0
 #define OPT_MCU_STM32H7RS         317 ///< ST F7RS
 #define OPT_MCU_STM32C0           318 ///< ST C0
+#define OPT_MCU_STM32N6           319 ///< ST N6
 
 // Sony
 #define OPT_MCU_CXD56             400 ///< SONY CXD56