diff options
Diffstat (limited to 'dts/src/arm/tegra30-asus-nexus7-grouper-common.dtsi')
| -rw-r--r-- | dts/src/arm/tegra30-asus-nexus7-grouper-common.dtsi | 60 |
1 files changed, 56 insertions, 4 deletions
diff --git a/dts/src/arm/tegra30-asus-nexus7-grouper-common.dtsi b/dts/src/arm/tegra30-asus-nexus7-grouper-common.dtsi index ae8300baa2..9732cd6f20 100644 --- a/dts/src/arm/tegra30-asus-nexus7-grouper-common.dtsi +++ b/dts/src/arm/tegra30-asus-nexus7-grouper-common.dtsi @@ -920,6 +920,10 @@ compatible = "onnn,nct1008"; reg = <0x4c>; vcc-supply = <&vdd_3v3_sys>; + + interrupt-parent = <&gpio>; + interrupts = <TEGRA_GPIO(S, 3) IRQ_TYPE_EDGE_FALLING>; + #thermal-sensor-cells = <1>; }; @@ -1251,21 +1255,34 @@ }; thermal-zones { - cpu-thermal { + /* + * NCT72 has two sensors: + * + * 0: internal that monitors ambient/skin temperature + * 1: external that is connected to the CPU's diode + * + * Ideally we should use userspace thermal governor, + * but it's a much more complex solution. The "skin" + * zone is a simpler solution which prevents Nexus 7 + * from getting too hot from a user's tactile perspective. + * The CPU zone is intended to protect silicon from damage. + */ + + skin-thermal { polling-delay-passive = <1000>; /* milliseconds */ polling-delay = <5000>; /* milliseconds */ - thermal-sensors = <&nct72 1>; + thermal-sensors = <&nct72 0>; trips { - trip0: cpu-alert0 { + trip0: skin-alert { /* throttle at 57C until temperature drops to 56.8C */ temperature = <57000>; hysteresis = <200>; type = "passive"; }; - trip1: cpu-crit { + trip1: skin-crit { /* shut down at 65C */ temperature = <65000>; hysteresis = <2000>; @@ -1285,5 +1302,40 @@ }; }; }; + + cpu-thermal { + polling-delay-passive = <1000>; /* milliseconds */ + polling-delay = <5000>; /* milliseconds */ + + thermal-sensors = <&nct72 1>; + + trips { + trip2: cpu-alert { + /* throttle at 85C until temperature drops to 84.8C */ + temperature = <85000>; + hysteresis = <200>; + type = "passive"; + }; + + trip3: cpu-crit { + /* shut down at 90C */ + temperature = <90000>; + hysteresis = <2000>; + type = "critical"; + }; + }; + + cooling-maps { + map1 { + trip = <&trip2>; + cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>, + <&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>, + <&cpu2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>, + <&cpu3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>, + <&actmon THERMAL_NO_LIMIT + THERMAL_NO_LIMIT>; + }; + }; + }; }; }; |