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drivers: serial: serial_omap: populate default clock frequency when not found in dt 

In some platforms like am437x, serial node is not populated with
clock-frequency node. So in that case have a default clock-clock
frequency.

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
This commit is contained in:
Mugunthan V N 2015-09-28 16:17:47 +05:30 committed by Tom Rini
parent 1778d7f3e6
commit 3a64845e9d
1 changed files with 3 additions and 1 deletions
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4
drivers/serial/serial_omap.c
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@ -12,6 +12,8 @@
DECLARE_GLOBAL_DATA_PTR; DECLARE_GLOBAL_DATA_PTR;
#define DEFAULT_CLK_SPEED 48000000 /* 48Mhz */
#if CONFIG_IS_ENABLED(OF_CONTROL) #if CONFIG_IS_ENABLED(OF_CONTROL)
static const struct udevice_id omap_serial_ids[] = { static const struct udevice_id omap_serial_ids[] = {
{ .compatible = "ti,omap3-uart" }, { .compatible = "ti,omap3-uart" },
@ -28,7 +30,7 @@ static int omap_serial_ofdata_to_platdata(struct udevice *dev)
if (ret) if (ret)
return ret; return ret;
plat->clock = fdtdec_get_int(gd->fdt_blob, dev->of_offset, plat->clock = fdtdec_get_int(gd->fdt_blob, dev->of_offset,
"clock-frequency", -1); "clock-frequency", DEFAULT_CLK_SPEED);
plat->reg_shift = 2; plat->reg_shift = 2;
return 0; return 0;