| From e5ac3f26a0065a5f683b3e9a91c2df47a6ddffe7 Mon Sep 17 00:00:00 2001 |
| From: Tomonori Sakita <tomonori.sakita@sord.co.jp> |
| Date: Mon, 21 Jan 2019 17:34:16 +0900 |
| Subject: serial: fsl_lpuart: fix maximum acceptable baud rate with |
| over-sampling |
| |
| [ 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 |
| |
