On Fri, 21 Dec 2018, Marek Szyprowski wrote: > 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.
Understood. Thanks for the explanation. > >> 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 -- Lee Jones [李琼斯] Linaro Services Technical Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog
