u-boot.git/include/clk.h, branch master

clk: Add missing to include/clk.h

2025-10-28T18:12:20+00:00

In this header we make direct references to some dm/device.h functions
while not including the header directly. Add the missing include.

Signed-off-by: Tom Rini

clk: add CONFIG_CLK_AUTO_ID

2025-06-11T07:42:55+00:00

Add a new config CONFIG_CLK_AUTO_ID to support a unique clk id
for all the clock providers, managed by clk uclass, when the clock
reference arg[0] is the same.

When the CONFIG is activated, the clock id is limited to the lower
CLK_ID_SZ = 24 bits in default clock xlate function
and the sequence number + 1 of the clk provider device is
added for the 8 higher bits.

We use sequence number + 1 to avoid the "dummy" clock id = 0,
used for invalid clock when CCF is activated.

When this config is activated, the new function clk_get_id()
should be used to get back the internal reference to clock
for the each clock provider.

Signed-off-by: Patrick Delaunay 
Signed-off-by: Patrice Chotard 
Cc: Lukasz Majewski 
Cc: Sean Anderson 
Reviewed-by: Patrick Delaunay 
Reviewed-by: Patrice Chotard

clk: Add clk_resolve_parent_clk()

2025-03-24T11:51:34+00:00

Add clk_resolve_parent_clk() to resolve parent clock udevice name
based on clock-names DT property. This is used in SoC clock drivers
to look up the clock name in clock tables, which matches a clock
name in DT clock-names property, and convert it into udevice name
which is used by U-Boot clock framework to look up parent clock in
e.g. clk_register() using uclass_get_device_by_name(UCLASS_CLK,
parent_name, &parent);

Signed-off-by: Marek Vasut

clk: Revise help text for clk_get_parent_rate()

2024-08-01T21:33:19+00:00

The function returns the rate of the parent clock, the previous text
made no sense at all.

Fixes: 4aa78300a025 ("dm: clk: Define clk_get_parent_rate() for clk operations")
Signed-off-by: Alexander Dahl 
Reviewed-by: Sean Anderson

treewide: Remove clk_free

2024-01-30T03:35:02+00:00

This function is a no-op. Remove it.

Signed-off-by: Sean Anderson 
Link: https://lore.kernel.org/r/20231216193843.2463779-3-seanga2@gmail.com

clk: Remove rfree

2024-01-30T03:35:02+00:00

Nothing uses this function. Remove it. Since clk_free no longer does
anything, just stub it out.

Signed-off-by: Sean Anderson 
Link: https://lore.kernel.org/r/20231216193843.2463779-2-seanga2@gmail.com

cmd: clk: Make soc_clk_dump static

2023-12-15T18:05:55+00:00

After introducing dump to clk_ops there is no need to override or expose
this symbol anymore.

Reviewed-by: Patrice Chotard 
Tested-by: Patrice Chotard 
Reviewed-by: Sean Anderson 
Signed-off-by: Igor Prusov 
Link: https://lore.kernel.org/r/20231109105516.24892-9-ivprusov@sberdevices.ru

clk: also handle ENOENT in *_optional functions

2023-11-01T19:14:51+00:00

If the device does not specify any clocks in device tree, these
functions will return PTR_ERR(-ENOENT). This is not the intended
behavior and does not comply with linux kernel CCF. Fix that by
returning NULL under such circumstances instead.

Signed-off-by: Yang Xiwen 
Reviewed-by: Sean Anderson 
Link: https://lore.kernel.org/r/20230818-clk-fix-v1-3-49ec18f820bf@outlook.com

clk: fix count parameter type for clk_release_all

2023-11-01T19:13:55+00:00

The second parameter for clk_release_all is used as an unsigned
(which makes sense) but the function prototype declares it as an int.
This causes warnings/error like such below:

include/clk.h:422:48: error: conversion to ‘int’ from ‘unsigned int’ may change the sign of the result [-Werror=sign-conversion]
  422 |         return clk_release_all(bulk->clks, bulk->count);

To fix this, changed the type of the count to `unsigned int`

Fixes: 82a8a669b4f7 ("clk: add clk_release_all()")
Signed-off-by: Eugen Hristev 
Reviewed-by: Xavier Drudis Ferran 
Reviewed-by: Sean Anderson 
Link: https://lore.kernel.org/r/20230619104752.278500-1-eugen.hristev@collabora.com

clk: Allow clk_get_by_name() with NULL name

2023-02-12T18:44:20+00:00

This allows devm_clock_get(dev, NULL) to work and get the first clock,
which is common in code ported from Linux.

Signed-off-by: Samuel Holland 
Reviewed-by: Sean Anderson 
Reviewed-by: Simon Glass 
Link: https://lore.kernel.org/r/20230122000252.53642-1-samuel@sholland.org