From 791c174d58f6fbea2b055b5851ab33d8f73b2c93 Mon Sep 17 00:00:00 2001
From: Marek Vasut <marek.vasut@gmail.com>
Date: Fri, 15 Sep 2017 21:11:27 +0200
Subject: serial: sh: Enable clock if available

If the clock framework provides the driver with valid clock,
enable them, otherwise the SCIF might not work if the clock
are not enabled prior to the driver probe.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

diff --git a/drivers/serial/serial_sh.c b/drivers/serial/serial_sh.c
index 087785f..d9db702 100644
--- a/drivers/serial/serial_sh.c
+++ b/drivers/serial/serial_sh.c
@@ -226,11 +226,14 @@ static int sh_serial_ofdata_to_platdata(struct udevice *dev)
 	plat->base = addr;
 
 	ret = clk_get_by_name(dev, "fck", &sh_serial_clk);
-	if (!ret)
-		plat->clk = clk_get_rate(&sh_serial_clk);
-	else
+	if (!ret) {
+		ret = clk_enable(&sh_serial_clk);
+		if (!ret)
+			plat->clk = clk_get_rate(&sh_serial_clk);
+	} else {
 		plat->clk = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev),
 					   "clock", 1);
+	}
 
 	plat->type = dev_get_driver_data(dev);
 	return 0;
-- 
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