This commit extends the struct clk to provide information regarding the clock rate. As a result the clock tree traversal is performed at most once, and further reads are using the cached value.
Signed-off-by: Lukasz Majewski lukma@denx.de
---
Changes in v6: None Changes in v5: - Use long long to store rate value (to avoid int overflow and also return errors correctly)
Changes in v4: None Changes in v3: None
include/clk.h | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/include/clk.h b/include/clk.h index a909b71f1a..d7b937ca7b 100644 --- a/include/clk.h +++ b/include/clk.h @@ -40,6 +40,7 @@ struct udevice; * other clock APIs to identify which clock signal to operate upon. * * @dev: The device which implements the clock signal. + * @rate: The clock rate (in HZ). * @id: The clock signal ID within the provider. * @data: An optional data field for scenarios where a single integer ID is not * sufficient. If used, it can be populated through an .of_xlate op and @@ -55,6 +56,7 @@ struct udevice; */ struct clk { struct udevice *dev; + long long rate; /* in HZ */ /* * Written by of_xlate. In the future, we might add more fields here. */