Mikhail Kshevetskiy 2916275a3d mediatek: fix pwn fan settings for sinovoip bpi-r3 (v3) ... backport upstream commit 095151b235 (mediatek: fix pwn fan settings for sinovoip bpi-r3 (v3)) Popular cheap PWM fans for this machine, like the ones coming in heatsink+fan combos will not work properly at the currently defined medium speed. Trying different pwm setting using a command echo $value > /sys/devices/platform/pwm-fan/hwmon/hwmon1/pwm1 I found: pwm1 value fan rotation speed cpu temperature notes ----------------------------------------------------------------- 0 maximal 31.5 Celsius too noisy 40 optimal 35.2 Celsius no noise hearable 95 minimal above 95 does not rotate 55.5 Celsius ----------------------------------------------------------------- Current cooling levels are: cooling-levels = <255 96 0>; Thus only cpu-active-high and cpu-active-low modes are usable. This patch fixes cpu-active-medium settings for bpi-r3 board. This patch may not be enough. Users may wants to tweak their thermal_zone0 trip points, thus tuning fan rotation speed depending on cpu temperature. That can be done on the base of the following example: === example ========= # cpu temperature below 25 Celsius degrees, no rotation echo 25000 > /sys/class/thermal/thermal_zone0/trip_point_4_temp # cpu temperature in [25..32] Celsius degrees, normal rotation speed echo 32000 > /sys/class/thermal/thermal_zone0/trip_point_3_temp # cpu temperature above 50 Celsius degrees, max rotation speed echo 50000 > /sys/class/thermal/thermal_zone0/trip_point_2_temp ===================== Changes v2: * put patch to a proper directory * updated patch description * tested with latest openwrt based on linux-6.6 Changes v3: * use upstream linux patch * update patch description Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevetskiy@gmail.com> Link: https://github.com/openwrt/openwrt/pull/21252 Signed-off-by: Robert Marko <robimarko@gmail.com>		2025-12-22 16:09:46 +01:00
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imagebuilder	imagebuilder: move handling of DEFAULT_PACKAGES into shareable place	2025-01-03 11:14:12 +01:00
linux	mediatek: fix pwn fan settings for sinovoip bpi-r3 (v3)	2025-12-22 16:09:46 +01:00
llvm-bpf	build: use zstd for IB, toolchain, SDK and LLVM compression	2024-04-13 08:05:04 +02:00
sdk	sdk: invert logic for GIT_BRANCH and GIT_TAGNAME	2025-12-04 19:25:13 +01:00
toolchain	build: use zstd for IB, toolchain, SDK and LLVM compression	2024-04-13 08:05:04 +02:00
Config.in	loongarch64: new target	2024-05-04 14:14:16 +08:00
Makefile	build: add $(STAGING_DIR) and $(BIN_DIR) preparation to target and package subdir compile dependencies	2024-03-03 23:13:59 +01:00