[U-Boot] [PATCH 6/9] serial: s5p: use clock api to get clock rate

Thomas Abraham
2016-04-13T10:43:39Z

From: Thomas Abraham <thomas.ab@samsung.com>

On Exynos platforms that support clock driver API, allow the driver to
use clock api get the SCLK clock rate.

Cc: Minkyu Kang <mk7.kang@samsung.com>
Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
---
drivers/serial/serial_s5p.c | 15 ++++++++++++++-
1 files changed, 14 insertions(+), 1 deletions(-)

diff --git a/drivers/serial/serial_s5p.c b/drivers/serial/serial_s5p.c
index 038d9b6..cf5b4f0 100644
--- a/drivers/serial/serial_s5p.c
+++ b/drivers/serial/serial_s5p.c
@@ -17,6 +17,7 @@
#include <asm/arch/clk.h>
#include <asm/arch/uart.h>
#include <serial.h>
+#include <clk.h>

DECLARE_GLOBAL_DATA_PTR;

@@ -90,7 +91,19 @@ int s5p_serial_setbrg(struct udevice *dev, int baudrate)
{
struct s5p_serial_platdata *plat = dev->platdata;
struct s5p_uart *const uart = plat->reg;
- u32 uclk = get_uart_clk(plat->port_id);
+ u32 uclk;
+
+#ifdef CONFIG_CLK_EXYNOS
+ struct udevice *clk_dev;
+ u32 ret;
+
+ ret = clk_get_by_index(dev, 1, &clk_dev);
+ if (ret < 0)
+ return ret;
+ uclk = clk_get_periph_rate(clk_dev, ret);
+#else
+ uclk = get_uart_clk(plat->port_id);
+#endif

s5p_serial_baud(uart, uclk, baudrate);

--
1.6.6.rc2