Signed-off-by: Vikas Manocha vikas.manocha@st.com Reviewed-by: Simon Glass sjg@chromium.org ---
Changed in v3: None Changed in v2: - added blank lines in code like before return and after variable declaration.
drivers/serial/serial_stm32x7.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)
diff --git a/drivers/serial/serial_stm32x7.c b/drivers/serial/serial_stm32x7.c index 2e6c676..1907cef 100644 --- a/drivers/serial/serial_stm32x7.c +++ b/drivers/serial/serial_stm32x7.c @@ -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