[PATCH 1/2] riscv: sophgo: dts: add pwm-fan for Milk-V Pioneer

From: Chen Wang
Date: Wed Feb 12 2025 - 04:44:06 EST


From: Chen Wang <unicorn_wang@xxxxxxxxxxx>

Milk-V Pioneer uses fan as cooling-device, and speed of the fan is
controlled by the first channel of pwm controller of SG2042.

Signed-off-by: Chen Wang <unicorn_wang@xxxxxxxxxxx>
---
arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts b/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
index be596d01ff8d..74c997ed8283 100644
--- a/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
+++ b/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
@@ -73,6 +73,13 @@ &uart0 {
};

/ {
+ pwmfan: pwm-fan {
+ compatible = "pwm-fan";
+ cooling-levels = <103 128 179 230 255>;
+ pwms = <&pwm 0 40000 0>;
+ #cooling-cells = <2>;
+ };
+
thermal-zones {
soc-thermal {
polling-delay-passive = <1000>;
--
2.34.1