From: Andy Shevchenko Date: Tue, 22 Sep 2015 15:54:12 +0000 (+0300) Subject: serial: 8250_dw: allow lower reference frequencies X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=3b4261dcf65993f95de80a0d63c5299aab922bd8;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git serial: 8250_dw: allow lower reference frequencies We have couple of standard but rare used baudrates which are not supported by 1,8432MHz reference frequency. Besides that user can potentially ask for any baudrate (via BOTHER flag) and we currently don't fully support that. Since clk-fractional-divider is moved to use rational best approximation for reference frequency we may amend the driver to support whatever user wants. Acked-by: Greg Kroah-Hartman Signed-off-by: Andy Shevchenko Signed-off-by: Stephen Boyd --- diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c index 06324f17a0cb..df3eddfa53a3 100644 --- a/drivers/tty/serial/8250/8250_dw.c +++ b/drivers/tty/serial/8250/8250_dw.c @@ -224,10 +224,6 @@ static void dw8250_set_termios(struct uart_port *p, struct ktermios *termios, if (IS_ERR(d->clk) || !old) goto out; - /* Not requesting clock rates below 1.8432Mhz */ - if (baud < 115200) - baud = 115200; - clk_disable_unprepare(d->clk); rate = clk_round_rate(d->clk, baud * 16); ret = clk_set_rate(d->clk, rate);