From: Daniel Golle <daniel@xxxxxxxxxxxxxx>
Add pwm-fan and cooling-maps to BananaPi-R3 devicetree.
Signed-off-by: Daniel Golle <daniel@xxxxxxxxxxxxxx>
Signed-off-by: Frank Wunderlich <frank-w@xxxxxxxxxxxxxxx>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
---
this is based on Patch from openwrt. as my PWM-fan seems to need 5v pwm
signal and r3 only provides 3v3 on 3pin-socket it does not work for me.
---
.../dts/mediatek/mt7986a-bananapi-bpi-r3.dts | 31 +++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dts b/arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dts
index 782519429497..29c018bbf29d 100644
--- a/arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dts
+++ b/arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dts
@@ -37,6 +37,15 @@ dcin: regulator-12vd {
regulator-always-on;
};
+ fan: pwm-fan {
+ compatible = "pwm-fan";
+ #cooling-cells = <2>;
+ /* cooling level (0, 1, 2) - pwm inverted */
+ cooling-levels = <255 96 0>;
+ pwms = <&pwm 0 10000 0>;
+ status = "okay";
+ };
+
gpio-keys {
compatible = "gpio-keys";
@@ -132,6 +141,28 @@ sfp2: sfp-2 {
};
};
+&cpu_thermal {
+ cooling-maps {
+ cpu-active-high {
+ /* active: set fan to cooling level 2 */
+ cooling-device = <&fan 2 2>;
+ trip = <&cpu_trip_active_high>;
+ };
+
+ cpu-active-low {
+ /* active: set fan to cooling level 1 */
+ cooling-device = <&fan 1 1>;
+ trip = <&cpu_trip_active_low>;
+ };
+
+ cpu-passive {
+ /* passive: set fan to cooling level 0 */
+ cooling-device = <&fan 0 0>;
+ trip = <&cpu_trip_passive>;
+ };
+ };
+};
+
&crypto {
status = "okay";
};
--
2.34.1
