AM625: ti-sci-clk recalc-rate errors

Part Number: AM625

After the update to `SYSFW ABI: 3.1 (firmware rev 0x0009 '9.2.1--v09.02.01 (Kool Koala)')` from `SYSFW ABI: 3.1 (firmware rev 0x0009 '9.1.8--v09.01.08 (Kool Koala)')` the Linux Kernel complaints with lots of errors:

...
[    0.202912] ti-sci-clk 44043000.system-controller:clock-controller: recalc-rate failed for dev=13, clk=7, ret=-19
[    0.215351] ti-sci-clk 44043000.system-controller:clock-controller: recalc-rate failed for dev=36, clk=9, ret=-19
[    0.226626] ti-sci-clk 44043000.system-controller:clock-controller: recalc-rate failed for dev=36, clk=15, ret=-19
[    0.237361] ti-sci-clk 44043000.system-controller:clock-controller: recalc-rate failed for dev=36, clk=16, ret=-19
[    0.248097] ti-sci-clk 44043000.system-controller:clock-controller: recalc-rate failed for dev=36, clk=17, ret=-19
[    0.258831] ti-sci-clk 44043000.system-controller:clock-controller: recalc-rate failed for dev=36, clk=18, ret=-19
...

Did you introduce some incompatibility between firmware and the kernel? I hope this is not the case ...

Our current software is based on a 6.1 kernel (from TI), with the latest component from meta-ti kirkstone OE layer branch, so it's pretty much your latest development state.

9 months ago

+1 fd 9 months ago

Intellectual 655 points

Is this, maybe related to this https://lore.kernel.org/all/20240213082640.457316-1-u-kumar1@ti.com/ ?

0 Bin Liu 9 months ago in reply to fd

TI__Guru*** 147126 points

Hi fd,

This seems to be related to the patch you referred. the clk IDs in the log are reserved, and the messages should be suppressed.

Have you tried to apply this patch to see if these messages disappear?

0 Bin Liu 9 months ago in reply to Bin Liu

TI__Guru*** 147126 points

fd said:
Is this, maybe related to this https://lore.kernel.org/all/20240213082640.457316-1-u-kumar1@ti.com/ ?

Okay, I see you marked this is resolved after a few hours posted this question, so it means you have tested the patch and it fixes the issue.

0 fd 9 months ago in reply to Bin Liu

Intellectual 655 points

Udit Kumar provided also some feedback on the mailing list, given that these errors are harmless, we'll get the patch in as soon as we merge from your kernel branch to ours in the next few days, I am confident this is it. Thanks for the help.

0 Bin Liu 9 months ago in reply to fd

TI__Guru*** 147126 points

Yes, after reviewed the dev/clk IDs listed in the kernel log messages, I believer it is it.

0 fd 9 months ago in reply to Bin Liu

Intellectual 655 points

Bin Liu said:
Yes, after reviewed the dev/clk IDs listed in the kernel log messages, I believer it is it.

Hello,

a small update, after updating the kernel the situation improved, but it's not 100% solved.

We have this single remaining error:

[    0.189747] ti-sci 44043000.system-controller: ABI: 3.1 (firmware rev 0x0009 '9.2.1--v09.02.01 (Kool Koala)')
[    0.241359] ti-sci-clk 44043000.system-controller:clock-controller: recalc-rate failed for dev=81, clk=20, ret=-19

It seems that at some point also your board was affected by this, see https://software-dl.ti.com/cicd-report/linux/index.html?section=test_log&platform=am62xxsip&snapshot=cicd.kirkstone.202402291453&board=am62xxsip_sk-fs&variant=Linux&test=16625&log=dut1_1_log.txt

If I understand correctly this is about the PRUSS.

Not sure if this helps

[    0.057645] k3-chipinfo 43000014.chipid: Family:AM62X rev:SR1.0 JTAGID[0x0bb7e02f] Detected

Any idea?

0 Bin Liu 9 months ago in reply to fd

TI__Guru*** 147126 points

Hi Fd,

Yes, dev=81 is for PRUSS, and according to the AM62x Clock Identifiers documentation linked below, clk=20 is an invalid clock. I will report the problem to our sw dev team. You can just ignore this message for now.

https://software-dl.ti.com/tisci/esd/latest/5_soc_doc/am62x/clocks.html#clocks-for-icssm0-device

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AM625: ti-sci-clk recalc-rate errors