riscv: sophgo: dts: add pwm-fan for Milk-V Pioneer

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@outlook.com>
Link: https://lore.kernel.org/r/dd23362328f77dd91aa9354848bbb0abad0f554b.1739351437.git.unicorn_wang@outlook.com
Signed-off-by: Inochi Amaoto <inochiama@gmail.com>

diff --git a/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts b/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
index be596d01ff8d33bcdbe431d9731a55ee190ad5b3..74c997ed8283a2c8c31a80dc33389d1e6f2d7374 100644 (file)
--- a/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
+++ b/arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts
@@ -73,6 +73,13 @@
 };
 
 / {
+       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>;