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serial: sh: Use the clock framework to obtain clock config

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Since we now have clock driver on the RCar Gen3 , obtain the clock
configuration using the clock framework functions. In case this
fails, fall back to the original code for pulling the clock config
directly out of OF.

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 2017-07-21 23:19:18 +02:00 committed by Nobuhiro Iwamatsu
parent 03a38a3972
commit 8171499df9
1 changed files with 11 additions and 2 deletions
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13
drivers/serial/serial_sh.c
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@ -9,6 +9,7 @@
#include <common.h>
#include <errno.h>
#include <clk.h>
#include <dm.h>
#include <asm/io.h>
#include <asm/processor.h>
@ -214,15 +215,23 @@ static const struct udevice_id sh_serial_id[] ={
static int sh_serial_ofdata_to_platdata(struct udevice *dev)
{
struct sh_serial_platdata *plat = dev_get_platdata(dev);
struct clk sh_serial_clk;
fdt_addr_t addr;
int ret;
addr = fdtdec_get_addr(gd->fdt_blob, dev_of_offset(dev), "reg");
if (addr == FDT_ADDR_T_NONE)
return -EINVAL;
plat->base = addr;
plat->clk = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev), "clock",
1);
ret = clk_get_by_name(dev, "fck", &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;
}