From: Shaohui Xie Shaohui.Xie@nxp.com
It's not always true that LPUART clock is CONFIG_SYS_CLK_FREQ, this patch provides a weak function get_lpuart_clk, so that the clock can be ovreride on a specific board which uses different clock for LPUART.
Signed-off-by: Shaohui Xie Shaohui.Xie@nxp.com --- changes in v2: none.
drivers/serial/serial_lpuart.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/serial/serial_lpuart.c b/drivers/serial/serial_lpuart.c index 042e9a2..beb4243 100644 --- a/drivers/serial/serial_lpuart.c +++ b/drivers/serial/serial_lpuart.c @@ -170,9 +170,14 @@ static int lpuart_serial_probe(struct udevice *dev) } #else
+u32 __weak get_lpuart_clk(void) +{ + return CONFIG_SYS_CLK_FREQ; +} + static void _lpuart32_serial_setbrg(struct lpuart_fsl *base, int baudrate) { - u32 clk = CONFIG_SYS_CLK_FREQ; + u32 clk = get_lpuart_clk(); u32 sbr;
sbr = (clk / (16 * baudrate));