refactor(st-uart): compute the over sampling dynamically
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>
diff --git a/plat/st/common/stm32cubeprogrammer_uart.c b/plat/st/common/stm32cubeprogrammer_uart.c
index 46ac9cf..9520703 100644
--- a/plat/st/common/stm32cubeprogrammer_uart.c
+++ b/plat/st/common/stm32cubeprogrammer_uart.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2021, STMicroelectronics - All Rights Reserved
+ * Copyright (c) 2021-2022, STMicroelectronics - All Rights Reserved
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -492,7 +492,6 @@
.parity = STM32_UART_PARITY_EVEN,
.hw_flow_control = STM32_UART_HWCONTROL_NONE,
.mode = STM32_UART_MODE_TX_RX,
- .over_sampling = STM32_UART_OVERSAMPLING_16,
.fifo_mode = STM32_UART_FIFOMODE_EN,
};