ee7cdbecb1
This commit documents binding for thermal used in Northstar family SoCs. There isn't any known Northstar device with active cooling system so DT example has empty cooling-maps node. There is also no support for CPU frequency throttling so I put only a critical trip in the example. Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
38 lines
716 B
Plaintext
38 lines
716 B
Plaintext
* Broadcom Northstar Thermal
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This binding describes thermal sensor that is part of Northstar's DMU (Device
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Management Unit).
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Required properties:
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- compatible : Must be "brcm,ns-thermal"
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- reg : iomem address range of PVTMON registers
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- #thermal-sensor-cells : Should be <0>
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Example:
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thermal: thermal@1800c2c0 {
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compatible = "brcm,ns-thermal";
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reg = <0x1800c2c0 0x10>;
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#thermal-sensor-cells = <0>;
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};
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thermal-zones {
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cpu_thermal: cpu-thermal {
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polling-delay-passive = <0>;
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polling-delay = <1000>;
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coefficients = <(-556) 418000>;
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thermal-sensors = <&thermal>;
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trips {
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cpu-crit {
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temperature = <125000>;
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hysteresis = <0>;
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type = "critical";
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};
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};
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cooling-maps {
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};
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};
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};
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