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stm32f7: serial: use clock driver to enable clock

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Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Vikas Manocha 2017-02-12 10:25:46 -08:00 committed by Tom Rini
parent 712f99a5dd
commit fd03b83a99
1 changed files with 18 additions and 0 deletions
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18
drivers/serial/serial_stm32x7.c
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@ -6,6 +6,7 @@
*/
#include <common.h>
#include <clk.h>
#include <dm.h>
#include <asm/io.h>
#include <serial.h>
@ -76,6 +77,22 @@ static int stm32_serial_probe(struct udevice *dev)
{
struct stm32x7_serial_platdata *plat = dev->platdata;
struct stm32_usart *const usart = plat->base;
#ifdef CONFIG_CLK
int ret;
struct clk clk;
ret = clk_get_by_index(dev, 0, &clk);
if (ret < 0)
return ret;
ret = clk_enable(&clk);
if (ret) {
dev_err(dev, "failed to enable clock\n");
return ret;
}
#endif
setbits_le32(&usart->cr1, USART_CR1_RE | USART_CR1_TE | USART_CR1_UE);
return 0;
@ -98,6 +115,7 @@ static int stm32_serial_ofdata_to_platdata(struct udevice *dev)
return -EINVAL;
plat->base = (struct stm32_usart *)addr;
return 0;
}
#endif