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| author | Patrick Pepin <patpep@me.com> | 2026-09-14 08:09:55 +0000 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2026-10-18 09:35:07 -0700 |
| commit | e886b6788f58fd4696b7548a7d8d47b4ba18a167 (patch) | |
| tree | bbd22fcbd8967c90f4d9c7c27e4118b5fe16e763 /tools/perf/scripts/python/bin/stackcollapse-record | |
| parent | c6ac9f8615019b57d6b53f091479f5a541896aee (diff) | |
| download | linux-e886b6788f58fd4696b7548a7d8d47b4ba18a167.tar.gz linux-e886b6788f58fd4696b7548a7d8d47b4ba18a167.zip | |
hwmon: (dell-smm) Add Dell Precision 3650 Tower to fan control whitelist
On the Dell Precision 3650 Tower, the EC ignores fan speed writes unless
automatic BIOS fan control is disabled first. The I8K_FAN_30A3_31A3 SMM
code pair works on this machine through the WMI-SMM backend: after
writing 1 to pwm1_enable, all three fans (CPU, front, top) accept the
three fan states and report matching RPM, and writing 2 hands control
back to the BIOS. I8K_FAN_34A3_35A3 was tested as well and also works;
I8K_FAN_30A3_31A3 is used since it matches recent OEM software.
Tested on BIOS 1.48.0 with kernels 7.0.0-30 and 7.0.0-31 (Ubuntu 26.04).
Signed-off-by: Patrick Pepin <patpep@me.com>
Acked-by: Pali Rohár <pali@kernel.org>
Link: https://patch.msgid.link/20260914080955.87925-1-patpep@me.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'tools/perf/scripts/python/bin/stackcollapse-record')
0 files changed, 0 insertions, 0 deletions