Add the possibility to configure the UART baudrate; reused the
console configuration, defined in STM32MP_UART_BAUDRATE.
The default value remains 115200.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Change-Id: Ifcf2b36e8ac929265405bc88e824ee78be3b5bbb
The parameter over_sampling of stm32_uart_init_s is not required
as it can be computed dynamically from clock rate of the serial
device and the requested baudrate.
Oversampling by 8 is allowed only for higher speed
(up to clock_rate / 8) to reduce the maximum receiver tolerance
to clock deviation.
This patch update the driver, the serial init struct and the
only user, the stm32cubeprogrammer over uart support.
Change-Id: I422731089730a288defeb7fa49886db65d0902b2
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Add a file to support the STMicroelectronics tool STM32CubeProgrammer
over UART in BL2 for STM32MP15x platform.
This tools is based on protocol defined in AN5275,
"USB DFU/USART protocols used in STM32MP1 Series bootloaders"
based on STM32 MCU protocols (AN3155, "USART protocol used
in the STM32 bootloader").
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Change-Id: I956c95d8de0a94d1eb8e61f043651dae7b838170
