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drivers: serial: numaker: support hw-flow-control

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This honors dts config hw-flow-control to enable flow control cts/rts
at driver init stage.

Signed-off-by: Chun-Chieh Li <ccli8@nuvoton.com>
This commit is contained in:
Chun-Chieh Li 2025-06-25 12:01:39 +08:00 committed by Benjamin Cabé
parent 1f92890283
commit 7179ef51fe
1 changed files with 12 additions and 0 deletions
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12
drivers/serial/uart_numaker.c
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@ -231,6 +231,15 @@ static int uart_numaker_init(const struct device *dev)
UART_Open(config->uart, pData->ucfg.baudrate);
if (pData->ucfg.flow_ctrl == UART_CFG_FLOW_CTRL_NONE) {
UART_DisableFlowCtrl(config->uart);
} else if (pData->ucfg.flow_ctrl == UART_CFG_FLOW_CTRL_RTS_CTS) {
UART_EnableFlowCtrl(config->uart);
} else {
LOG_ERR("H/W flow control (%d) not support", pData->ucfg.flow_ctrl);
return -ENOTSUP;
}
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
config->irq_config_func(dev);
#endif
@ -439,6 +448,9 @@ static DEVICE_API(uart, uart_numaker_driver_api) = {
.ucfg = \
{ \
.baudrate = DT_INST_PROP(inst, current_speed), \
.flow_ctrl = COND_CODE_1(DT_INST_PROP_OR(inst, hw_flow_control, 0),\
(UART_CFG_FLOW_CTRL_RTS_CTS), \
(UART_CFG_FLOW_CTRL_NONE)), \
}, \
}; \
\