diff options
Diffstat (limited to 'src/drivers/uart/uart8250io.c')
| -rw-r--r-- | src/drivers/uart/uart8250io.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/src/drivers/uart/uart8250io.c b/src/drivers/uart/uart8250io.c index 0974005a81..69244f58df 100644 --- a/src/drivers/uart/uart8250io.c +++ b/src/drivers/uart/uart8250io.c @@ -30,8 +30,12 @@ /* Nominal values only, good for the range of choices Kconfig offers for * set of standard baudrates. */ -#define BAUDRATE_REFCLK (115200) -#define BAUDRATE_OVERSAMPLE (1) + +/* Multiply the maximim baud-rate by the default oversample rate to compute + * the default input clock to the UART. The uart_baudrate_divisor divides + * by the oversample clock to determine the final baud-rate. + */ +#define BAUDRATE_REFCLK (115200 * 16) /* Expected character delay at 1200bps is 9ms for a working UART * and no flow-control. Assume UART as stuck if shift register @@ -112,7 +116,7 @@ void uart_init(int idx) { unsigned int div; div = uart_baudrate_divisor(default_baudrate(), BAUDRATE_REFCLK, - BAUDRATE_OVERSAMPLE); + uart_input_clock_divider()); uart8250_init(uart_platform_base(idx), div); } |