This patch gets the core clock as provided by the DT and enables it.
The code was taken from Amlogic's serial driver, and was tested on my
board.

Signed-off-by: Helmut Klein <redacted>
---
?drivers/tty/serial/meson_uart.c | 10 ++++++++++
?1 file changed, 10 insertions(+)

diff --git a/drivers/tty/serial/meson_uart.c b/drivers/tty/serial/meson_uart.c
index 60f16795d16b..cb99112288eb 100644
--- a/drivers/tty/serial/meson_uart.c
+++ b/drivers/tty/serial/meson_uart.c

@@ -600,6 +600,7 @@ static int meson_uart_probe(struct platform_device *pdev)

?	struct resource *res_mem, *res_irq;
?	struct uart_port *port;
?	struct clk *clk;
+	struct clk *core_clk;
?	int ret = 0;

?	if (pdev->dev.of_node)

@@ -625,6 +626,15 @@ static int meson_uart_probe(struct platform_device *pdev)

?	if (!port)
?		return -ENOMEM;

+	core_clk = devm_clk_get(&pdev->dev, "core");
+	if (!IS_ERR(core_clk)) {
+		ret = clk_prepare_enable(core_clk);
+		if (ret) {
+			dev_err(&pdev->dev, "couldn't enable clkc\n");
+			return ret;
+		}
+	}
+
?	clk = clk_get(&pdev->dev, NULL);