New chip request: STM32F446 and STM32F732.

[xcvista]

Those chips are some of the newer high performance chips, and for STM32F446 I am planning to use it in a project. They uses an updated OTG block so existing STM32F405 code will likely not work.

STM32F446 is similar to STM32F405 that it has an OTG_FS block with internal PHY, as well as an OTG_HS block with internal FS PHY and ULPI pins.

STM32F732 is part of the new STM32F7 line. The OTG_FS block is similar to that of STM32F446. Its OTG_HS block features internal HS PHY and ULPI pins.

For STM32F446, it need three drivers: otgfs, otghs and otghs_ulpi. For STM32F732 it needs only otgfs and otghs. Since the internal PHY for OTG_HS in STM32F732 is already a HS PHY, there is no point except for compatibility reasons to use external PHY at all, so that more-or-less redundant feature can be left unsupported.

[dmitrystu]

Maybe I missed something but:

• STM32F446 don't have an internal HS PHY (see: DocID027107 Rev 6)
• STM32F732 also don't have an internal HS PHY, but F733 has. (see: DS11854 Rev 4)

[xcvista]

@dmitrystu My bad.

I wonder how should I modify the files to add support for those chips?

I have created two boards, one with STM32F405 + USB3300 for stm32f429_otghs_ulpi, one with STM32F446 + USB3343 + USB mux for stm32f446_otgfs and stm32f446_otghs_ulpi. And I have a STM32F767 Nucleo that can allow work on stm32f767_otgfs.