diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/8250/8250_omap.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/tty/serial/8250/8250_omap.c b/drivers/tty/serial/8250/8250_omap.c index a74126569785..0a8316632d75 100644 --- a/drivers/tty/serial/8250/8250_omap.c +++ b/drivers/tty/serial/8250/8250_omap.c @@ -12,6 +12,7 @@ #define SUPPORT_SYSRQ #endif +#include <linux/clk.h> #include <linux/device.h> #include <linux/io.h> #include <linux/module.h> @@ -1203,7 +1204,18 @@ static int omap8250_probe(struct platform_device *pdev) } up.port.line = ret; - of_property_read_u32(np, "clock-frequency", &up.port.uartclk); + if (of_property_read_u32(np, "clock-frequency", &up.port.uartclk)) { + struct clk *clk; + + clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(clk)) { + if (PTR_ERR(clk) == -EPROBE_DEFER) + return -EPROBE_DEFER; + } else { + up.port.uartclk = clk_get_rate(clk); + } + } + priv->wakeirq = irq_of_parse_and_map(np, 1); id = of_match_device(of_match_ptr(omap8250_dt_ids), &pdev->dev); |