Hi On 2018-12-21 11:15, Lee Jones wrote: > On Fri, 14 Dec 2018, Marek Szyprowski wrote: >> From: Seung-Woo Kim <[email protected]> >> >> This driver can be used to communicate with Bluetooth chip in high-speed >> UART mode, so increase the maximum baudrate to 3Mbps. >> >> Signed-off-by: Seung-Woo Kim <[email protected]> >> [mszyprow: rephrased commit message] >> Signed-off-by: Marek Szyprowski <[email protected]> >> --- >> drivers/tty/serial/samsung.c | 2 +- >> 1 file changed, 1 insertion(+), 1 deletion(-) >> >> diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c >> index 2a49b6d876b8..9fc3559f80d9 100644 >> --- a/drivers/tty/serial/samsung.c >> +++ b/drivers/tty/serial/samsung.c >> @@ -1287,7 +1287,7 @@ static void s3c24xx_serial_set_termios(struct >> uart_port *port, >> * Ask the core to calculate the divisor for us. >> */ >> >> - baud = uart_get_baud_rate(port, termios, old, 0, 115200*8); >> + baud = uart_get_baud_rate(port, termios, old, 0, 3000000); > Does that mean the low speed devices will stop working? It looks like > this should be dynamically configurable based on what device is > connected to it, no?
The changed parameter is maximum supported rate, so this change doesn't affect any low speed device. >> quot = s3c24xx_serial_getclk(ourport, baud, &clk, &clk_sel); >> if (baud == 38400 && (port->flags & UPF_SPD_MASK) == UPF_SPD_CUST) >> quot = port->custom_divisor; Best regards -- Marek Szyprowski, PhD Samsung R&D Institute Poland
