The clock UCLASS need to be probed to allow availability of the
private data (struct clk *), get in show_clks() with dev_get_clk_ptr()
before use them.
Without this patch the clock dump can cause crash because all the
private data are not available before calling the API clk_get_rate().
It is the case for the SCMI clocks, priv->channel is needed for
scmi_clk_get_rate() and it is initialized only in scmi_clk_probe().
This issue causes a crash for "clk dump" command on STM32MP135F-DK board
for SCMI clock not yet probed.
Fixes: 1a725e2290 ("clk: fix clock tree dump to properly dump out every registered clock")
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
Link: https://lore.kernel.org/r/20221213145708.v2.1.Ia0bc6b272f1e2e3f37873c61d79138c2663c4055@changeid
Update the result of do_clk_setfreq and always returns a CMD_RET_ value
(-EINVAL was a possible result).
This patch avoid the CLI output "exit not allowed from main input shell."
Fixes: 7ab418fbe6 ("clk: add support for setting clk rate from cmdline")
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
Link: https://lore.kernel.org/r/20220131172131.3.Iec2029edb7fc0b29e13bcb86058ad2f614f62779@changeid
The function clk_lookup can be replaced by a direct call
to uclass_get_device_by_name for UCLASS_CLK.
This patch removes duplicated codes by the generic DM API and avoids
issue in clk_lookup because result of uclass_get_device wasn't tested;
when ret < 0, dev = NULL and dev->name is invalid, the next function
call strcmp(name, dev->name) causes a crash.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Link: https://lore.kernel.org/r/20220131172131.2.I7bc7762eff1e31ab7ff5b34c416ee03b8fe52200@changeid
Test the number of argument in setfreq command to avoid a crash when
the command setfreq is called without argument:
STM32MP> clk setfreq
data abort
pc : [<ddba3f18>] lr : [<ddba3f89>]
reloc pc : [<c018ff18>] lr : [<c018ff89>]
sp : dbaf45b8 ip : ddb1d859 fp : 00000002
r10: dbb3fd80 r9 : dbb11e90 r8 : ddbf38cc
r7 : ddb39725 r6 : 00000000 r5 : 00000000 r4 : dbb3fd84
r3 : dbb3fd84 r2 : 0000000a r1 : dbaf45bc r0 : 00000011
Flags: nzCv IRQs off FIQs off Mode SVC_32 (T)
Code: 4dd3 1062 85a3 ddbd (7803) 2b30
Resetting CPU ...
Fixes: 7ab418fbe6 ("clk: add support for setting clk rate from cmdline")
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
Link: https://lore.kernel.org/r/20220131172131.1.I32a8f213d330dccd922f7aafc60d3d63fcbe8615@changeid
It is a pain to have to specify the value 10 in each call. Add a new
dectoul() function and update the code to use it.
Signed-off-by: Simon Glass <sjg@chromium.org>
Add new clk subcommand "clk setfreq", for setting up a clock rate
directly from u-boot cmdline. This is handy for any debugging purposes
towards clocks.
Acked-by: Lukasz Majewski <lukma@denx.de>
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tero Kristo <kristo@kernel.org>
Some clocks are not associated to a DM node, so just parsing the DM is not
enough. This is especially true for root clocks, which typically don't have
any parents. Instead, fetch every registered UCLASS_CLK instance, and dump
these out.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tero Kristo <kristo@kernel.org>
Update depth only when clock uclass is found to have correct display
of command "clk dump".
Without this patch, the displayed depth is the binding depth for
all the uclass and that can be strange as only clock uclass nodes
are displayed.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
We should not use typedefs in U-Boot. They cannot be used as forward
declarations which means that header files must include the full header to
access them.
Drop the typedef and rename the struct to remove the _s suffix which is
now not useful.
This requires quite a few header-file additions.
Signed-off-by: Simon Glass <sjg@chromium.org>
clk_get_rate may return -ENODEV if the clock isn't valid.
Also, make the error cases go through a single path.
Fixes: ff8eee0330 ("cmd: clk: Add trivial implementation of clock dump
for DM")
Signed-off-by: Ismael Luceno <ismael.luceno@silicon-gears.com>
Reviewed-by: Matthias Brugger <mbrugger@suse.com>
Reviewed-by: Marek Vasut <marek.vasut@gmail.com>
Add trivial implementation of the clk dump in case DM is enabled.
This implementation just iterates over all the clock registered
with the CLK uclass and prints their rate.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@konsulko.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.
In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.
This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.
Signed-off-by: Tom Rini <trini@konsulko.com>
In case of error in soc_clk_dump function are returned different values
then CMD return values (-1, 0, 1).
For example:
ZynqMP> clk dump
exit not allowed from main input shel
The patch is checking all negative return values and return
CMD_RET_FAILURE which is proper reaction for these cases.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Now that they are in their own directory, we can remove this prefix.
This makes it easier to find a file since the prefix does not get in the
way.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Acked-by: Stefan Roese <sr@denx.de>
Acked-by: Przemyslaw Marczak <p.marczak@samsung.com>
