clk: introduce enable_count

As what Linux Kernel 5.3.0 provides when enable/disable clk,
there is an enable_count in clk_core_disable/enable. Introduce
enable_count to track the clk enable/disable count when
clk_enable/disable for CCF. And Initialize enable_count to 0 when
register the clk.

And clk tree dump with enable_count will be supported, it will
be easy for us to check the clk status with enable_count

Signed-off-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Peng Fan 2019-08-21 13:35:03 +00:00 committed by Lukasz Majewski
parent 753e5385ca
commit e6849e2fd8
3 changed files with 3 additions and 0 deletions

View File

@ -40,6 +40,7 @@ int clk_register(struct clk *clk, const char *drv_name,
return ret;
}
clk->enable_count = 0;
/* Store back pointer to clk from udevice */
clk->dev->uclass_priv = clk;

View File

@ -27,6 +27,7 @@ static int clk_fixed_rate_ofdata_to_platdata(struct udevice *dev)
/* Make fixed rate clock accessible from higher level struct clk */
dev->uclass_priv = clk;
clk->dev = dev;
clk->enable_count = 0;
return 0;
}

View File

@ -61,6 +61,7 @@ struct clk {
struct udevice *dev;
long long rate; /* in HZ */
u32 flags;
int enable_count;
/*
* Written by of_xlate. In the future, we might add more fields here.
*/