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clk: Provide struct clk for fixed rate clock (clk_fixed_rate.c)

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Up till now the fixed rate clock ('osc') has been added to UCLASS_CLK
without declaring struct clk. As a result it was only accessible by
iterating the udevice's uclass list.

This is a problem for clock code, which operates on pointers to struct
clk (like clk_get_rate()), not udevices.

After this change struct clk is accessible from udevice and udevice from
struct clk.

Signed-off-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Lukasz Majewski 2019-06-24 15:50:40 +02:00 committed by Stefano Babic
parent a8592cdd51
commit 36bac0a193
1 changed files with 5 additions and 0 deletions
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5
drivers/clk/clk_fixed_rate.c
View File

@ -8,6 +8,7 @@
#include <dm.h>
struct clk_fixed_rate {
struct clk clk;
unsigned long fixed_rate;
};
@ -24,10 +25,14 @@ const struct clk_ops clk_fixed_rate_ops = {
static int clk_fixed_rate_ofdata_to_platdata(struct udevice *dev)
{
struct clk *clk = &to_clk_fixed_rate(dev)->clk;
#if !CONFIG_IS_ENABLED(OF_PLATDATA)
to_clk_fixed_rate(dev)->fixed_rate =
dev_read_u32_default(dev, "clock-frequency", 0);
#endif
/* Make fixed rate clock accessible from higher level struct clk */
dev->uclass_priv = clk;
clk->dev = dev;
return 0;
}