diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.10/950-0510-Make-rpi-poe-fan-less-noisy-in-cool-environments.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.10/950-0510-Make-rpi-poe-fan-less-noisy-in-cool-environments.patch | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.10/950-0510-Make-rpi-poe-fan-less-noisy-in-cool-environments.patch b/target/linux/bcm27xx/patches-5.10/950-0510-Make-rpi-poe-fan-less-noisy-in-cool-environments.patch new file mode 100644 index 0000000000..6dea05e207 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.10/950-0510-Make-rpi-poe-fan-less-noisy-in-cool-environments.patch @@ -0,0 +1,24 @@ +From 6e4cd276213a20bc55146588b0ec2fc6b622a9d7 Mon Sep 17 00:00:00 2001 +From: ProBackup-nl <515451+ProBackup-nl@users.noreply.github.com> +Date: Thu, 18 Mar 2021 18:21:43 +0100 +Subject: [PATCH] Make rpi poe fan less noisy in cool environments +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Run the PoE hat fan with reduced noise when possible. The PoE hat fan will spin even at PWM=1 and spins almost silent. Tested at 17ºC, the fan PWM alternates between 1 and 10, which is a lot less noisy then alternating between PWM levels 0 and 31. +--- + arch/arm/boot/dts/overlays/rpi-poe-overlay.dts | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +--- a/arch/arm/boot/dts/overlays/rpi-poe-overlay.dts ++++ b/arch/arm/boot/dts/overlays/rpi-poe-overlay.dts +@@ -16,7 +16,7 @@ + cooling-min-state = <0>; + cooling-max-state = <4>; + #cooling-cells = <2>; +- cooling-levels = <0 31 63 150 255>; ++ cooling-levels = <0 1 10 100 255>; + status = "okay"; + }; + }; |