| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.19 41/78] serial: fsl_lpuart: fix maximum acceptable baud rate with over-sampling | Date | Mon, 4 Mar 2019 09:22:24 +0100 |
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4.19-stable review patch. If anyone has any objections, please let me know.
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[ Upstream commit 815d835b7ba46685c316b000013367dacb2b461b ]
Using over-sampling ratio, lpuart can accept baud rate upto uartclk / 4.
Signed-off-by: Tomonori Sakita <tomonori.sakita@sord.co.jp> Signed-off-by: Atsushi Nemoto <atsushi.nemoto@sord.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/tty/serial/fsl_lpuart.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c index 7d030c2e42ffd..50b6746a8b5d7 100644 --- a/drivers/tty/serial/fsl_lpuart.c +++ b/drivers/tty/serial/fsl_lpuart.c @@ -1695,7 +1695,7 @@ lpuart32_set_termios(struct uart_port *port, struct ktermios *termios, } /* ask the core to calculate the divisor */ - baud = uart_get_baud_rate(port, termios, old, 50, port->uartclk / 16); + baud = uart_get_baud_rate(port, termios, old, 50, port->uartclk / 4); spin_lock_irqsave(&sport->port.lock, flags); -- 2.19.1
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