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serial: s5p: use clock api to get clock rate

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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>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
This commit is contained in:
Thomas Abraham 2016-04-23 22:18:11 +05:30 committed by Minkyu Kang
parent 5ab6c4df27
commit cf75cdf96e
1 changed files with 14 additions and 1 deletions
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15
drivers/serial/serial_s5p.c
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@ -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);