diff options
Diffstat (limited to 'zephyr/program/nissa/yavilla/fan.dtsi')
| -rw-r--r-- | zephyr/program/nissa/yavilla/fan.dtsi | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/zephyr/program/nissa/yavilla/fan.dtsi b/zephyr/program/nissa/yavilla/fan.dtsi new file mode 100644 index 0000000000..6a3fc0288a --- /dev/null +++ b/zephyr/program/nissa/yavilla/fan.dtsi @@ -0,0 +1,71 @@ +/* Copyright 2022 The ChromiumOS Authors + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ +/ { + fans { + compatible = "cros-ec,fans"; + fan_0 { + pwms = <&pwm2 PWM_CHANNEL_2 PWM_KHZ(25) PWM_POLARITY_NORMAL>; + tach = <&tach1>; + rpm_min = <2500>; + rpm_start = <2500>; + rpm_max = <4100>; + rpm_deviation = <1>; + enable_gpio = <&gpio_fan_enable>; + }; + }; + fan_steps { + compatible = "cros-ec,fan-steps"; + level_0 { + temp_on = <43 47 0>; + temp_off = <99 99 99>; + rpm_target = <0>; + }; + level_1 { + temp_on = <46 48 0>; + temp_off = <40 45 99>; + rpm_target = <2600>; + }; + level_2 { + temp_on = <49 49 0>; + temp_off = <44 46 99>; + rpm_target = <2800>; + }; + level_3 { + temp_on = <53 50 54>; + temp_off = <47 47 51>; + rpm_target = <3100>; + }; + level_4 { + temp_on = <56 56 60>; + temp_off = <51 48 52>; + rpm_target = <3300>; + }; + level_5 { + temp_on = <60 60 64>; + temp_off = <54 52 56>; + rpm_target = <3600>; + }; + level_6 { + temp_on = <100 100 100>; + temp_off = <58 54 58>; + rpm_target = <4000>; + }; + }; +}; +/* pwm for fan */ +&pwm2 { + status = "okay"; + prescaler-cx = <PWM_PRESCALER_C6>; + pinctrl-0 = <&pwm2_gpa2_default>; + pinctrl-names = "default"; +}; +/* fan tachometer sensor */ +&tach1 { + status = "okay"; + channel = <IT8XXX2_TACH_CHANNEL_A>; + pulses-per-round = <2>; + pinctrl-0 = <&tach1a_gpd7_default>; + pinctrl-names = "default"; +}; |