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dm: clk: Add a simple version of clk_get_by_index()

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This function adds quite a bit of code to SPL and we probably don't need
all the features in SPL. Add a simple version (for SPL only) to save space.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2016-01-21 19:44:00 -07:00
parent 364809de31
commit a4b10c088c
1 changed files with 17 additions and 1 deletions
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18
drivers/clk/clk-uclass.c
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@ -67,8 +67,23 @@ ulong clk_set_periph_rate(struct udevice *dev, int periph, ulong rate)
#if CONFIG_IS_ENABLED(OF_CONTROL)
int clk_get_by_index(struct udevice *dev, int index, struct udevice **clk_devp)
{
struct fdtdec_phandle_args args;
int ret;
#ifdef CONFIG_SPL_BUILD
u32 cell[2];
if (index != 0)
return -ENOSYS;
assert(*clk_devp);
ret = uclass_get_device(UCLASS_CLK, 0, clk_devp);
if (ret)
return ret;
ret = fdtdec_get_int_array(gd->fdt_blob, dev->of_offset, "clocks",
cell, 2);
if (ret)
return ret;
return cell[1];
#else
struct fdtdec_phandle_args args;
assert(*clk_devp);
ret = fdtdec_parse_phandle_with_args(gd->fdt_blob, dev->of_offset,
@ -87,6 +102,7 @@ int clk_get_by_index(struct udevice *dev, int index, struct udevice **clk_devp)
return ret;
}
return args.args_count > 0 ? args.args[0] : 0;
#endif
}
#endif