odroid-n2-fan.patch

   1 From 44a201df71739a3c5ef3c40e58ebaccfd052d430 Mon Sep 17 00:00:00 2001
   2 From: Anand Moon <linux.amoon@gmail.com>
   3 Date: Fri, 21 Oct 2022 05:09:03 +0000
   4 Subject: arm64: dts: meson: Enable active coling using gpio-fan on Odroid
   5  N2/N2+
   6
   7 Odroid N2/N2+ support active cooling via gpio-fan controller.
   8 Add fan controls and tip point for cpu and ddr thermal sensor
   9 on this boards.
  10
  11 Signed-off-by: Anand Moon <linux.amoon@gmail.com>
  12 Link: https://lore.kernel.org/r/20221021050906.1158-1-linux.amoon@gmail.com
  13 Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
  14 ---
  15  .../boot/dts/amlogic/meson-g12b-odroid-n2.dtsi     | 42 ++++++++++++++++++++++
  16  1 file changed, 42 insertions(+)
  17
  18 diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi
  19 index fd3fa82e4c330..667d2b7749244 100644
  20 --- a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi
  21 +++ b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi
  22 @@ -39,6 +39,14 @@
  23                 reset-gpios = <&gpio BOOT_12 GPIO_ACTIVE_LOW>;
  24         };
  25
  26 +       fan: gpio-fan {
  27 +               compatible = "gpio-fan";
  28 +               gpios = <&gpio_ao GPIOAO_10 GPIO_ACTIVE_HIGH>;
  29 +               /* Using Dummy Speed */
  30 +               gpio-fan,speed-map = <0 0>, <1 1>;
  31 +               #cooling-cells = <2>;
  32 +       };
  33 +
  34         leds {
  35                 compatible = "gpio-leds";
  36
  37 @@ -410,6 +418,40 @@
  38         clock-latency = <50000>;
  39  };
  40
  41 +&cpu_thermal {
  42 +       trips {
  43 +               cpu_active: cpu-active {
  44 +                       temperature = <60000>; /* millicelsius */
  45 +                       hysteresis = <2000>; /* millicelsius */
  46 +                       type = "active";
  47 +               };
  48 +       };
  49 +
  50 +       cooling-maps {
  51 +               map {
  52 +                       trip = <&cpu_active>;
  53 +                       cooling-device = <&fan THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
  54 +               };
  55 +       };
  56 +};
  57 +
  58 +&ddr_thermal {
  59 +       trips {
  60 +               ddr_active: ddr-active {
  61 +                       temperature = <60000>; /* millicelsius */
  62 +                       hysteresis = <2000>; /* millicelsius */
  63 +                       type = "active";
  64 +               };
  65 +       };
  66 +
  67 +       cooling-maps {
  68 +               map {
  69 +                       trip = <&ddr_active>;
  70 +                       cooling-device = <&fan THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
  71 +               };
  72 +       };
  73 +};
  74 +
  75  &ext_mdio {
  76         external_phy: ethernet-phy@0 {
  77                 /* Realtek RTL8211F (0x001cc916) */
  78 --
  79 cgit
  80