From 9b46213b4f63578be2fbcf6b0532a0a8d4b5edb0 Mon Sep 17 00:00:00 2001
From: Shaohui Xie <Shaohui.Xie@nxp.com>
Date: Fri, 28 Oct 2016 14:23:30 +0800
Subject: [PATCH] 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>
---
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 042e9a26d1..beb4243124 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));
--
2.39.5