A GPIO fan may be connected to Pollux fan header. The fan should
activate at 60°C and stay active until critical SoC temperature is
reached and the board shuts down.
Signed-off-by: Yannic Moog <y.moog@xxxxxxxxx>
---
.../dts/freescale/imx8mp-phyboard-pollux-rdk.dts | 36 ++++++++++++++++++++++
1 file changed, 36 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-rdk.dts b/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-rdk.dts
index 50debe821c42..9b551a50533f 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-rdk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-rdk.dts
@@ -9,6 +9,7 @@
#include <dt-bindings/phy/phy-imx8-pcie.h>
#include <dt-bindings/leds/leds-pca9532.h>
#include <dt-bindings/pwm/pwm.h>
+#include <dt-bindings/thermal/thermal.h>
#include "imx8mp-phycore-som.dtsi"
/ {
@@ -32,6 +33,16 @@ backlight_lvds: backlight {
pwms = <&pwm3 0 50000 0>;
};
+ fan0: fan {
+ compatible = "gpio-fan";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_fan>;
+ gpio-fan,speed-map = <0 0
+ 13000 1>;
+ gpios = <&gpio5 4 GPIO_ACTIVE_HIGH>;
+ #cooling-cells = <2>;
+ };
+
panel1_lvds: panel-lvds {
compatible = "edt,etml1010g3dra";
backlight = <&backlight_lvds>;
@@ -111,6 +122,25 @@ reg_vcc_3v3_sw: regulator-vcc-3v3-sw {
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
};
+
+ thermal-zones {
+ soc-thermal {
+ trips {
+ active1: trip2 {
+ temperature = <60000>;
+ hysteresis = <2000>;
+ type = "active";
+ };
+ };
+
+ cooling-maps {
+ map1 {
+ trip = <&active1>;
+ cooling-device = <&fan0 1 THERMAL_NO_LIMIT>;
+ };
+ };
+ };
+ };
};
/* TPM */
@@ -377,6 +407,12 @@ MX8MP_IOMUXC_SAI1_MCLK__GPIO4_IO20 0x10
>;
};
+ pinctrl_fan: fan0grp {
+ fsl,pins = <
+ MX8MP_IOMUXC_SPDIF_RX__GPIO5_IO04 0x16
+ >;
+ };
+
pinctrl_flexcan1: flexcan1grp {
fsl,pins = <
MX8MP_IOMUXC_SAI5_RXD2__CAN1_RX 0x154
---
base-commit: 79e1b8171ca476abb9b8eceef81cd1b6f58b75e9
change-id: 20240920-wip-y-moog-phytec-de-phyboard-pollux-fan-0cd29d6d2b97
Best regards,
--
Yannic Moog <y.moog@xxxxxxxxx>
