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authorRussell King <rmk+kernel@armlinux.org.uk>2020-04-16 15:32:00 +0100
committerRussell King (Oracle) <rmk+kernel@armlinux.org.uk>2021-09-19 19:53:00 +0100
commitfaf141a4c51763617617ecee953250fee4d7861a (patch)
tree066f49c73f64e7ba6d46a9547e7a1c81d7e46680
parenta660b695fa232c2a8b0f53437efd48a48352da74 (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 adbfecc678b5..3fc8321b8aa9 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";