@@ -11,6 +11,7 @@
#include "mvebu-linkstation-fan.dtsi"
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
+#include <dt-bindings/thermal/thermal.h>
/ {
model = "Buffalo LinkStation LS421DE";
@@ -40,10 +41,62 @@
MBUS_ID(0x09, 0x01) 0 0xf1100000 0x10000>;
};
- gpio_fan {
+ system_fan: gpio_fan {
gpios = <&gpio0 13 GPIO_ACTIVE_HIGH
- &gpio0 14 GPIO_ACTIVE_HIGH>;
+ &gpio0 14 GPIO_ACTIVE_HIGH>;
alarm-gpios = <&gpio0 10 GPIO_ACTIVE_HIGH>;
+
+ cooling-min-state = <0>;
+ cooling-max-state = <3>;
+ #cooling-cells = <2>;
+ };
+
+ thermal-zones {
+ chassis_thermal: chassis-thermal {
+ polling-delay = <20000>;
+ polling-delay-passive = <2000>;
+
+ thermal-sensors = <&hdd0_temp>, <&hdd1_temp>;
+ coefficients = <1 1>;
+
+ trips {
+ chassis_alert1: chassis-alert1 {
+ temperature = <36000>;
+ hysteresis = <2000>;
+ type = "active";
+ };
+ chassis_alert2: chassis-alert2 {
+ temperature = <46000>;
+ hysteresis = <2000>;
+ type = "active";
+ };
+ chassis_alert3: chassis-alert3 {
+ temperature = <56000>;
+ hysteresis = <2000>;
+ type = "passive";
+ };
+ chassis_crit: chassis-crit {
+ temperature = <66000>;
+ hysteresis = <2000>;
+ type = "critical";
+ };
+ };
+
+ cooling-maps {
+ map1 {
+ trip = <&chassis_alert1>;
+ cooling-device = <&system_fan THERMAL_NO_LIMIT 1>;
+ };
+ map2 {
+ trip = <&chassis_alert2>;
+ cooling-device = <&system_fan 2 2>;
+ };
+ map3 {
+ trip = <&chassis_alert3>;
+ cooling-device = <&system_fan 3 THERMAL_NO_LIMIT>;
+ };
+ };
+ };
};
gpio_keys {
@@ -225,6 +278,16 @@
&sata {
nr-ports = <2>;
status = "okay";
+
+ hdd0_temp: sata-port@0 {
+ reg = <0>;
+ #thermal-sensor-cells = <0>;
+ };
+
+ hdd1_temp: sata-port@1 {
+ reg = <1>;
+ #thermal-sensor-cells = <0>;
+ };
};
&sdio {
@@ -17,8 +17,9 @@ define Device/buffalo_ls421de
KERNEL_INITRAMFS := kernel-bin | append-dtb | uImage none
DEVICE_DTS := armada-370-buffalo-ls421de
DEVICE_PACKAGES := \
- kmod-rtc-rs5c372a kmod-hwmon-gpiofan kmod-usb3 kmod-md-raid0 \
- kmod-md-raid1 kmod-md-mod kmod-fs-xfs mkf2fs e2fsprogs partx-utils
+ kmod-rtc-rs5c372a kmod-hwmon-gpiofan kmod-hwmon-drivetemp kmod-usb3 \
+ kmod-md-raid0 kmod-md-raid1 kmod-md-mod kmod-fs-xfs mkf2fs e2fsprogs \
+ partx-utils
endef
TARGET_DEVICES += buffalo_ls421de
The Buffalo Linkstation LS421DE has a chassis fan for cooling two internal hard drives. Currently there is no control over this fan, running always at fixed medium speed. With the recent jump to the kernel 5.4, now we can monitor the hard drive temperature and control the fan with thermal zones. Install the kmod-hwmon-drivetemp module and wire up a thermal zone on the dts file to allow automatic fan control by the kernel. Tested succesfully using a single Crucial BX500 SSD drive. Signed-off-by: Daniel González Cabanelas <dgcbueu@gmail.com> --- .../boot/dts/armada-370-buffalo-ls421de.dts | 67 ++++++++++++++++++- target/linux/mvebu/image/cortexa9.mk | 5 +- 2 files changed, 68 insertions(+), 4 deletions(-)