X-Git-Url: https://git.archive.openwrt.org/?a=blobdiff_plain;f=target%2Flinux%2Fmvebu%2Fpatches-4.4%2F206-mvebu_wrt1900ac_use_pwm-fan_rather_than_gpio-fan.patch;fp=target%2Flinux%2Fmvebu%2Fpatches-4.4%2F206-mvebu_wrt1900ac_use_pwm-fan_rather_than_gpio-fan.patch;h=c0e3567c73021151c1de6218417d2a7d7f3d8c48;hb=6dc7dda4324d9917a26c8fad9c14f341e020a692;hp=0000000000000000000000000000000000000000;hpb=2533dc484b973e70d3924382903edf241e2a459c;p=openwrt.git

diff --git a/target/linux/mvebu/patches-4.4/206-mvebu_wrt1900ac_use_pwm-fan_rather_than_gpio-fan.patch b/target/linux/mvebu/patches-4.4/206-mvebu_wrt1900ac_use_pwm-fan_rather_than_gpio-fan.patch
new file mode 100644
index 0000000000..c0e3567c73
--- /dev/null
+++ b/target/linux/mvebu/patches-4.4/206-mvebu_wrt1900ac_use_pwm-fan_rather_than_gpio-fan.patch
@@ -0,0 +1,28 @@
+The mvebu gpio driver can also perform PWM on some pins. Us the
+pwm-fan driver to control the fan of the WRT1900AC, giving us fine
+grain control over its speed and hence noise.
+
+Signed-off-by: Andrew Lunn <andrew@lunn.ch>
+---
+ arch/arm/boot/dts/armada-xp-wrt1900ac.dts | 8 +++-----
+ 1 file changed, 3 insertions(+), 5 deletions(-)
+
+--- a/arch/arm/boot/dts/armada-xp-linksys-mamba.dts
++++ b/arch/arm/boot/dts/armada-xp-linksys-mamba.dts
+@@ -412,13 +412,11 @@
+ 		};
+ 	};
+ 
+-	gpio_fan {
++	pwm_fan {
+ 		/* SUNON HA4010V4-0000-C99 */
+-		compatible = "gpio-fan";
+-		gpios = <&gpio0 24 0>;
+ 
+-		gpio-fan,speed-map = <0    0
+-				      4500 1>;
++		compatible = "pwm-fan";
++		pwms = <&gpio0 24 4000 0>;
+ 	};
+ 
+ 	dsa@0 {