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serial: sh: Enable clock if available

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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>
This commit is contained in:
Marek Vasut 2017-09-15 21:11:27 +02:00 committed by Nobuhiro Iwamatsu
parent bddb44e94a
commit 791c174d58
1 changed files with 6 additions and 3 deletions
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9
drivers/serial/serial_sh.c
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@ -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;