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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 <[email protected]>
Signed-off-by: Patrice Chotard <[email protected]>
Cc: Lukasz Majewski <[email protected]>
Cc: Sean Anderson <[email protected]>
Reviewed-by: Patrick Delaunay <[email protected]>
Reviewed-by: Patrice Chotard <[email protected]>
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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", ...
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arch/arm/dts/imx8mm.dtsi: |
clk: clock-controller@30380000 { v
clock-names = "osc_32k", "osc_24m", ...
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v
clocks = <&osc_32k>, <&osc_24m>, ...
}; _______________________|
... |
/ { v
osc_24m: clock-osc-24m {
compatible = "fixed-clock";
...
};
Signed-off-by: Marek Vasut <[email protected]>
Reported-by: Francesco Dolcini <[email protected]>
Tested-by: Fabio Estevam <[email protected]>
Tested-by: Adam Ford <[email protected]> # imx8mp-beacon
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Use U-Boot specific struct udevice instead of Linux compatibility
struct device in clk-fixed-factor registration.
Signed-off-by: Marek Vasut <[email protected]>
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Use U-Boot specific struct udevice instead of Linux compatibility
struct device in clk-divider clock registration.
Signed-off-by: Marek Vasut <[email protected]>
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Use U-Boot specific struct udevice instead of Linux compatibility
struct device in clk-composite registration.
Signed-off-by: Marek Vasut <[email protected]>
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Use U-Boot specific struct udevice instead of Linux compatibility
struct device in clk-gate registration.
Signed-off-by: Marek Vasut <[email protected]>
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Use U-Boot specific struct udevice instead of Linux compatibility
struct device in clk-mux registration.
Signed-off-by: Marek Vasut <[email protected]>
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Make public the clk_fetch_parent_index and rename it. This allow
us to be reused in driver specialization
Signed-off-by: Michael Trimarchi <[email protected]>
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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 <[email protected]>
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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 <[email protected]>
Reviewed-by: Peng Fan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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Sphinx expects Return: and not @return to indicate a return value.
find . -name '*.c' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;
find . -name '*.h' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;
Signed-off-by: Heinrich Schuchardt <[email protected]>
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Current driver only supports registering fixed rate clocks from DT. Add
new API which makes it possible to register fixed rate clocks directly
from e.g. platform specific clock drivers.
Reviewed-by: Peng Fan <[email protected]>
Signed-off-by: Tero Kristo <[email protected]>
Signed-off-by: Tero Kristo <[email protected]>
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We need to allow SoCs to create their own drivers for this so that they
can use their own of-platdata structs. To minimise code duplication,
export the driver operations and the ofdata_to_plat() setup function.
Signed-off-by: Simon Glass <[email protected]>
Signed-off-by: Simon Glass <[email protected]>
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The linux/err.h header file was included twice.
Signed-off-by: Dario Binacchi <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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Export routines that can be used by other drivers avoiding duplicating
code.
Signed-off-by: Dario Binacchi <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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Rename this to be consistent with the change from 'platdata'.
Signed-off-by: Simon Glass <[email protected]>
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This header file should not be included in other header files. Remove it
and use a forward declaration and un-inlining of dev_get_clk_ptr()
instead.
Fix up the kendryte header files to avoid build errors.
Signed-off-by: Simon Glass <[email protected]>
Reviewed-by: Sean Anderson <[email protected]>
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At present dm/device.h includes the linux-compatible features. This
requires including linux/compat.h which in turn includes a lot of headers.
One of these is malloc.h which we thus end up including in every file in
U-Boot. Apart from the inefficiency of this, it is problematic for sandbox
which needs to use the system malloc() in some files.
Move the compatibility features into a separate header file.
Signed-off-by: Simon Glass <[email protected]>
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This header was missing a couple of include dependencies when included on its
own.
Signed-off-by: Sean Anderson <[email protected]>
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Introduce io_gate_val for sandbox clk gate test usage
Signed-off-by: Peng Fan <[email protected]>
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Import clk composite clk support from Linux Kernel 5.1-rc5
Signed-off-by: Peng Fan <[email protected]>
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Because clk-provider use clk_ops, so let's include clk-uclass.h
Signed-off-by: Peng Fan <[email protected]>
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Export the structure for others to use.
Signed-off-by: Peng Fan <[email protected]>
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Import clk-gate support from Linux Kernel 5.1-rc5
Signed-off-by: Peng Fan <[email protected]>
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Export mux/divider ops and divider_recalc_rate for composite usage
Signed-off-by: Peng Fan <[email protected]>
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Add set parent support for clk mux
Signed-off-by: Peng Fan <[email protected]>
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The generic mux clock code for CCF requires reading the clock multiplexer
value from HW registers. As sandbox by design has readl() as no-op it was
necessary to provide this value in the other way.
The new field in the mux structure (accessible only when sandbox is run)
has been introduced for this purpose.
Signed-off-by: Lukasz Majewski <[email protected]>
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The generic divider clock code for CCF requires reading the divider value
from HW registers. As sandbox by design has readl() as no-op it was
necessary to provide this value in the other way.
The new field in the divider structure (accessible only when sandbox is
run) has been introduced for this purpose.
Signed-off-by: Lukasz Majewski <[email protected]>
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This patch brings the files from Linux kernel (linux-stable/linux-5.1.y
SHA1: 5752b50477da)to provide clocks support as it is used on the Linux
kernel with Common Clock Framework [CCF] setup.
The directory structure has been preserved. The ported code only supports
reading information from PLL, MUX, Divider, etc and enabling/disabling
the clocks USDHCx/ECSPIx depending on used bus. Moreover, it is agnostic
to the alias numbering as the information about the clock is read from the
device tree.
One needs to pay attention to the comments indicating necessary for U-Boot's
driver model changes.
If needed, the code can be extended to support the "set" part of the clock
management.
Signed-off-by: Lukasz Majewski <[email protected]>
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This file now stores the dev_get_clk_ptr() wrapper on the dev_get_uclass_priv()
function.
Signed-off-by: Lukasz Majewski <[email protected]>
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