For some gate clocks and fixed clocks without a parent, calling
clk_register will print an useless error message indicating that parent
is missing. Fix that by gaurding log_xxx() with an if-statement.
Signed-off-by: Yang Xiwen <forbidden405@outlook.com>
Suggested-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
Link: https://lore.kernel.org/r/20230807-clk-fix-v2-1-0b688e21fb4e@outlook.com
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 <seanga2@gmail.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Link: https://lore.kernel.org/r/20220320203446.740178-1-seanga2@gmail.com
Define LOG_CATEGORY to allow filtering with log command
for generic clock and CCF clocks.
This patch also change existing printf, debug and pr_ macro
to log_ or dev_ macro.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
Reorder include files in the U-Boot expected order:
the common.h header should always be first,
followed by other headers in order,
then headers with directories,
then local files.
It is a preliminary step for next patch.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
At present flags are stored as part of the device. In preparation for
storing them separately, change the access to go through inline functions.
Signed-off-by: Simon Glass <sjg@chromium.org>
Most drivers use these access methods but a few do not. Update them.
In some cases the access is not permitted, so mark those with a FIXME tag
for the maintainer to check.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Pratyush Yadav <p.yadav@ti.com>
This function is not necessary anymore, since device_bind_ofnode() does
the same thing and works with both flattree and livetree.
Rename it to indicate that it is special.
Signed-off-by: Simon Glass <sjg@chromium.org>
The parent->name variable can be used only in case the
uclass_get_device_by_name routine returns successfully.
Signed-off-by: Dario Binacchi <dariobin@libero.it>
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>
When support Clock Common Framework, U-Boot use dev for
clk tree information, there is no clk->parent. When
support composite clk, it contains mux/gate/divider,
but the mux/gate/divider is not binded with device.
So we could not use dev_get_uclass_priv to get the correct
clk_mux/gate/divider. So add clk_dev_binded to let
choose the correct method.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
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 <lukma@denx.de>
