lpuart: add a get_lpuart_clk function
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 ovreridden on a specific board which uses different clock
for LPUART.
Signed-off-by: Shaohui Xie <Shaohui.Xie@nxp.com>
[YS: Reformat commit message]
Reviewed-by: York Sun <york.sun@nxp.com>
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 @@
}
#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));