Zynq UG585 states, in chapter B.33, for XUARTPS_CR_STARTBRK:
It can only be set if STPBRK (Stop transmitter break) is not high
This fixes tcsendbreak, which otherwise does not actually break.
Signed-Off-By: Julien Malik <julien.malik@xxxxxxxxxxxxx>
---
drivers/tty/serial/xilinx_uartps.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
index 8e521c69a959..2e69fceaa792 100644
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -657,7 +657,7 @@ static void cdns_uart_break_ctl(struct uart_port *port, int ctl)
status = readl(port->membase + CDNS_UART_CR);
if (ctl == -1)
- writel(CDNS_UART_CR_STARTBRK | status,
+ writel(CDNS_UART_CR_STARTBRK | (~CDNS_UART_CR_STOPBRK & status),
port->membase + CDNS_UART_CR);
else {
if ((status & CDNS_UART_CR_STOPBRK) == 0)
--
2.25.1
