serial: sh: Use the clock framework to obtain clock config
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>
diff --git a/drivers/serial/serial_sh.c b/drivers/serial/serial_sh.c
index 51f7fbc..087785f 100644
--- a/drivers/serial/serial_sh.c
+++ b/drivers/serial/serial_sh.c
@@ -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 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;
}