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bsps/zynq-uart: fix parity configuration handling

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Fix parity handling in zynq_uart_set_attributes() by clearing existing
parity bits before setting a new mode instead of always ORing PAR_NONE,
which caused incorrect or ignored parity; also fix inverted PARODD logic
and add ZYNQ_UART_MODE_PAR_MASK to manage the parity field correctly.

Fixes #5554
This commit is contained in:
Shivam Deolankar
2026-05-18 14:13:59 -05:00
committed by Kinsey Moore
parent 2c39475802
commit b41f83249a
2 changed files with 8 additions and 10 deletions
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bsps/shared/dev/serial/zynq-uart.c
+7 -10
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@@ -193,16 +193,13 @@ static bool zynq_uart_set_attributes(
*/
mode |= ZYNQ_UART_MODE_CHMODE(ZYNQ_UART_MODE_CHMODE_NORMAL);
/*
* Parity
*/
mode |= ZYNQ_UART_MODE_PAR(ZYNQ_UART_MODE_PAR_NONE);
if (term->c_cflag & PARENB) {
if (!(term->c_cflag & PARODD)) {
mode |= ZYNQ_UART_MODE_PAR(ZYNQ_UART_MODE_PAR_ODD);
} else {
mode |= ZYNQ_UART_MODE_PAR(ZYNQ_UART_MODE_PAR_EVEN);
}
/* Apply correct parity */
if (!(term->c_cflag & PARENB)) {
mode |= ZYNQ_UART_MODE_PAR(ZYNQ_UART_MODE_PAR_NONE);
} else if (term->c_cflag & PARODD) {
mode |= ZYNQ_UART_MODE_PAR(ZYNQ_UART_MODE_PAR_ODD);
} else {
mode |= ZYNQ_UART_MODE_PAR(ZYNQ_UART_MODE_PAR_EVEN);
}
/*