The `fs` in the file name means that on-chip FS PHY is configured for USB OTG HS. The file is renamed to `cfg_usb_otg_hs_phy_fs.h`
- to clarify that USB OTG HS is just configured with PHY FS and not HS and FS,
- to allow a configuration of USB OTG FS and HS in one file called `cfg_usb_otg_hs_fs.h` or whatever, and
- to allow a configuration of USB OTG HS with ULPI PHY in a file called `cfg_usb_otg_hs_phy_ulpi.h`.
f
This PR sets the DMA configuration for the UART peripherals on the
stm32f4 boards to the undef value to disable the DMA. This to prevent
from accidentally configuring the DMA to stream 0 channel 0 when
enabling DMA.
There is no hardware limitation for custom boards based on STM32 to uses
SPI bus with signals coming from different PORT and alternate functions.
This patch allow alternate's function definition per pin basis, thus enable
the support of SPI bus signals routed on differents PORT.
Signed-off-by: Yannick Gicquel <ygicquel@gmail.com>