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| author | Igor Velkov <iav@iav.lv> | 2026-10-06 07:48:58 +0300 |
|---|---|---|
| committer | Heiko Stuebner <heiko@sntech.de> | 2026-10-10 13:11:26 +0200 |
| commit | fc411363b8231315e5260662bac5223636321983 (patch) | |
| tree | 4d293d6181ccf9ba182e808b51e48144d0c453d9 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 34e9692a96b4373b2df99a7acb83b60b1076d661 (diff) | |
arm64: dts: rockchip: Add the fan tachometers to Kobol Helios64
The tachometer outputs of both fan connectors reach the SoC through
open-drain buffers, on GPIO4_C5 for P7 and GPIO4_C7 for P6, but the fan
nodes do not describe them. pwm-fan therefore registers no fan1_input.
Describe each line as the fan's interrupt. The board pulls both lines
up, so configure the pins without internal bias.
Tested on 7.3-rc6: fan1_input reads 0 with the fans stopped and rises
with the duty cycle, to about 3500 rpm at full speed on both fans.
Assisted-by: LLM
Signed-off-by: Igor Velkov <iav@iav.lv>
Link: https://patch.msgid.link/20261006-helios64-fan-tach-v1-1-1c87e72d42b2@iav.lv
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions