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drivers: uart_stm32: Add support for tx/rx swap

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Add a new boolean devicetree property `tx-rx-swap` to the
st,stm32-usart binding, used to control TX/RX swap during
device initialization.

Signed-off-by: Alexander Mihajlovic <a@abxy.se>
This commit is contained in:
Alexander Mihajlovic 2022-04-02 15:21:01 +02:00 • committed by Marti Bolivar
commit 4ff4991e16
3 changed files with 15 additions and 0 deletions
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7
drivers/serial/uart_stm32.c
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@ -473,6 +473,12 @@ static int uart_stm32_configure(const struct device *dev,
data->baud_rate = cfg->baudrate;
}
#ifdef LL_USART_TXRX_SWAPPED
if (config->tx_rx_swap) {
LL_USART_SetTXRXSwap(config->usart, LL_USART_TXRX_SWAPPED);
}
#endif
LL_USART_Enable(config->usart);
return 0;
};
@ -1715,6 +1721,7 @@ static const struct uart_stm32_config uart_stm32_cfg_##index = { \
.parity = DT_INST_ENUM_IDX_OR(index, parity, UART_CFG_PARITY_NONE), \
.pcfg = PINCTRL_DT_INST_DEV_CONFIG_GET(index), \
.single_wire = DT_INST_PROP_OR(index, single_wire, false), \
.tx_rx_swap = DT_INST_PROP_OR(index, tx_rx_swap, false), \
STM32_UART_IRQ_HANDLER_FUNC(index) \
}; \
\