USB HS with external phy on stm32f746g_disco

[acimonfortier]

I am new to Zephyr and I am trying to prototype on the stm32f746g_disco board to create a USB mass storage device to RAM using the usbotg_hs interface (with external phy). I made the sample code work using the usbotg_fs, but can't make it work with usbotg_hs.

The mass storage device is detected by my linux laptop, but it seems it can't read the content of the ramdisk.

My code is here: https://github.com/acimonfortier/test-ram-msc-hs

Any idea what I a m missing?

Thanks