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authorRussell King <rmk+kernel@armlinux.org.uk>2020-04-16 15:32:00 +0100
committerRussell King <rmk+kernel@armlinux.org.uk>2020-09-02 10:01:49 +0100
commit070b6eff0b99b9a4cc5c3fbc43d47f0eb1a8c02f (patch)
treeb8d60135a8f7946cf12a573c0de045759679a2c9
parenta387cf5a72988680a2bbbbba06a1eab31ba2c10b (diff)
arm64: dts: marvell: mcbin: add pwm-fan
Add pwm-fan support for controlling the fan speed, which allows the fan speed to be controlled via sysfs. Alternatively, users can also add their cooling maps to DT which will be specific to the environment that they house the Macchiatobin, as well as their fan setup. For example, one may connect PWM controlled case fans to this connector, and use the PWM signal to control the case fans. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
-rw-r--r--arch/arm64/boot/dts/marvell/armada-8040-mcbin.dtsi11
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/marvell/armada-8040-mcbin.dtsi b/arch/arm64/boot/dts/marvell/armada-8040-mcbin.dtsi
index cbcb210cb6d8..0c1a52d12f30 100644
--- a/arch/arm64/boot/dts/marvell/armada-8040-mcbin.dtsi
+++ b/arch/arm64/boot/dts/marvell/armada-8040-mcbin.dtsi
@@ -30,6 +30,13 @@
ethernet3 = &cp1_eth2;
};
+ fan: pwm {
+ compatible = "pwm-fan";
+ pinctrl-names = "default";
+ pinctrl-0 = <&cp0_fan_pwm_pins>;
+ pwms = <&cp0_gpio2 16 40000>;
+ };
+
/* Regulator labels correspond with schematics */
v_3_3: regulator-3-3v {
compatible = "regulator-fixed";
@@ -211,6 +218,10 @@
marvell,pins = "mpp47";
marvell,function = "gpio";
};
+ cp0_fan_pwm_pins: fan-pwm-pins {
+ marvell,pins = "mpp48";
+ marvell,function = "gpio";
+ };
cp0_sfp_1g_pins: sfp-1g-pins {
marvell,pins = "mpp51", "mpp53", "mpp54";
marvell,function = "gpio";