From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vikas Manocha Date: Sun, 12 Feb 2017 10:25:46 -0800 Subject: [U-Boot] [PATCH v3 03/10] stm32f7: serial: use clock driver to enable clock In-Reply-To: <1486923956-27330-1-git-send-email-vikas.manocha@st.com> References: <1486923956-27330-1-git-send-email-vikas.manocha@st.com> Message-ID: <1486923956-27330-4-git-send-email-vikas.manocha@st.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Signed-off-by: Vikas Manocha Reviewed-by: Simon Glass --- 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 +#include #include #include #include @@ -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 -- 1.9.1