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authorMarek Vasut <marek.vasut@gmail.com>2017-07-21 23:19:18 +0200
committerNobuhiro Iwamatsu <iwamatsu@nigauri.org>2017-08-03 04:26:25 +0900
commit8171499df99884e770430346698d7045c777a46b (patch)
tree971cd374626c2799cc12c91c2aa6114ce8c16584 /drivers/serial/serial_sh.c
parent03a38a397248529b01908eaed24f9262545ca9b5 (diff)
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>
Diffstat (limited to 'drivers/serial/serial_sh.c')
-rw-r--r--drivers/serial/serial_sh.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/serial/serial_sh.c b/drivers/serial/serial_sh.c
index 51f7fbcfb7..087785f9a2 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 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;
}