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

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: imx: Pass CCM udevice into clk_register_composite()

2025-04-28T13:42:01+00:00

Pass the clock controller udevice into clk_register_composite(),
so it can be passed further to any registered composite clocks
and used for look up of parent clock referenced in DT "clocks"
and "clock-names" properties by phandle and name pair.

Use the clock controller udevice in imx8m_clk_mux_set_parent()
to perform accurate look up of parent clock referenced in the
CCM driver by name. If the clock name that is being looked up
matches one of the names listed in the clock controller DT node
"clock-names" array property, then the offset of the name is
looked up in the "clocks" DT property and the phandle at that
offset is resolved to the parent clock udevice. The test to
determine whether a particular driver instance registered with
clock uclass matches the parent clock is done by comparing the
OF nodes of the clock registered with clock uclass and parent
clock resolved from the phandle.

Example:

drivers/clk/imx/clk-imx8mm.c:
static const char * const imx8mm_a53_sels[] = {"osc_24m", "arm_pll_out", ...
                                      _____________|
arch/arm/dts/imx8mm.dtsi:            |
clk: clock-controller@30380000 {     v
        clock-names = "osc_32k", "osc_24m", ...
	                           |
				   v
        clocks = <&osc_32k>, <&osc_24m>, ...
};          _______________________|
...        |
/ {        v
        osc_24m: clock-osc-24m {
                compatible = "fixed-clock";
...
};

Signed-off-by: Marek Vasut 
Reported-by: Francesco Dolcini 
Tested-by: Fabio Estevam 
Tested-by: Adam Ford  # imx8mp-beacon

clk: clk-fixed-factor: Use struct udevice instead of struct device

2025-03-24T11:51:35+00:00

Use U-Boot specific struct udevice instead of Linux compatibility
struct device in clk-fixed-factor registration.

Signed-off-by: Marek Vasut

clk: clk-divider: Use struct udevice instead of struct device

2025-03-24T11:51:35+00:00

Use U-Boot specific struct udevice instead of Linux compatibility
struct device in clk-divider clock registration.

Signed-off-by: Marek Vasut

clk: clk-composite: Use struct udevice instead of struct device

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

Use U-Boot specific struct udevice instead of Linux compatibility
struct device in clk-composite registration.

Signed-off-by: Marek Vasut

clk: clk-gate: Use struct udevice instead of struct device

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

Use U-Boot specific struct udevice instead of Linux compatibility
struct device in clk-gate registration.

Signed-off-by: Marek Vasut

clk: clk-mux: Use struct udevice instead of struct device

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

Use U-Boot specific struct udevice instead of Linux compatibility
struct device in clk-mux registration.

Signed-off-by: Marek Vasut

clk: clk-mux: Make public the clk_fetch_parent_index

2024-07-06T18:39:22+00:00

Make public the clk_fetch_parent_index and rename it. This allow
us to be reused in driver specialization

Signed-off-by: Michael Trimarchi

Correct SPL uses of SANDBOX_CLK_CCF

2023-02-10T12:41:40+00:00

This converts 12 usages of this option to the non-SPL form, since there is
no SPL_SANDBOX_CLK_CCF defined in Kconfig

Signed-off-by: Simon Glass

clk: ccf: Add some helper functions for clock ops

2022-03-30T17:03:29+00:00

Most CCF drivers follow a common pattern where their clock ops defer the
actual operation to the backing CCF clock. Add some generic implementations
of these functions to reduce duplication of code.

Signed-off-by: Sean Anderson 
Reviewed-by: Peng Fan 
Link: https://lore.kernel.org/r/20220320203446.740178-1-seanga2@gmail.com