git.ipfire.org Git - thirdparty/openwrt.git/blob

   1 From 4a152231b050590af771fa3cc8462ed08b691a24 Mon Sep 17 00:00:00 2001
   2 From: Alexey Charkov <alchark@gmail.com>
   3 Date: Mon, 17 Jun 2024 22:28:54 +0400
   4 Subject: [PATCH] arm64: dts: rockchip: enable automatic fan control on Rock 5B
   5
   6 This links the PWM fan on Radxa Rock 5B as an active cooling device
   7 managed automatically by the thermal subsystem, with a target SoC
   8 temperature of 65C and a minimum-spin interval from 55C to 65C to
   9 ensure airflow when the system gets warm
  10
  11 Helped-by: Dragan Simic <dsimic@manjaro.org>
  12 Reviewed-by: Dragan Simic <dsimic@manjaro.org>
  13 Signed-off-by: Alexey Charkov <alchark@gmail.com>
  14 Link: https://lore.kernel.org/r/20240617-rk-dts-additions-v5-4-c1f5f3267f1e@gmail.com
  15 Signed-off-by: Heiko Stuebner <heiko@sntech.de>
  16 ---
  17  .../boot/dts/rockchip/rk3588-rock-5b.dts      | 32 ++++++++++++++++++-
  18  1 file changed, 31 insertions(+), 1 deletion(-)
  19
  20 --- a/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts
  21 +++ b/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts
  22 @@ -52,7 +52,7 @@
  23
  24         fan: pwm-fan {
  25                 compatible = "pwm-fan";
  26 -               cooling-levels = <0 95 145 195 255>;
  27 +               cooling-levels = <0 120 150 180 210 240 255>;
  28                 fan-supply = <&vcc5v0_sys>;
  29                 pwms = <&pwm1 0 50000 0>;
  30                 #cooling-cells = <2>;
  31 @@ -278,6 +278,36 @@
  32                 };
  33         };
  34  };
  35 +
  36 +&package_thermal {
  37 +       polling-delay = <1000>;
  38 +
  39 +       trips {
  40 +               package_fan0: package-fan0 {
  41 +                       temperature = <55000>;
  42 +                       hysteresis = <2000>;
  43 +                       type = "active";
  44 +               };
  45 +
  46 +               package_fan1: package-fan1 {
  47 +                       temperature = <65000>;
  48 +                       hysteresis = <2000>;
  49 +                       type = "active";
  50 +               };
  51 +       };
  52 +
  53 +       cooling-maps {
  54 +               map1 {
  55 +                       trip = <&package_fan0>;
  56 +                       cooling-device = <&fan THERMAL_NO_LIMIT 1>;
  57 +               };
  58 +
  59 +               map2 {
  60 +                       trip = <&package_fan1>;
  61 +                       cooling-device = <&fan 2 THERMAL_NO_LIMIT>;
  62 +               };
  63 +       };
  64 +};
  65
  66  &pcie2x1l0 {
  67         pinctrl-names = "default";