diff options
| author | Stefan Wahren <stefan.wahren@i2se.com> | 2017-03-31 23:03:04 +0300 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2017-05-16 01:43:35 +0300 |
| commit | 0fe4d2181cc4cb3eba303c0e03f878d2558d0f3a (patch) | |
| tree | 81375f3794d7d6bb9b850405753736df670a6c08 /arch/arm/boot/dts | |
| parent | 072f58af1dfbc39f8daf6be170d90c2465df4771 (diff) | |
| download | linux-0fe4d2181cc4cb3eba303c0e03f878d2558d0f3a.tar.xz | |
ARM: dts: bcm283x: Add CPU thermal zone with 1 trip point
As suggested by Eduardo Valentin this adds the thermal zone for
the bcm2835 SoC with its single thermal sensor. We start with
the criticial trip point and leave the cooling devices empty
since we don't have any at the moment. Since the coefficients
could vary depending on the SoC we need to define them separate.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Eduardo Valentin <edubezval@gmail.com>
Diffstat (limited to 'arch/arm/boot/dts')
| -rw-r--r-- | arch/arm/boot/dts/bcm2835.dtsi | 4 | ||||
| -rw-r--r-- | arch/arm/boot/dts/bcm2836.dtsi | 4 | ||||
| -rw-r--r-- | arch/arm/boot/dts/bcm283x.dtsi | 21 |
3 files changed, 29 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/bcm2835.dtsi b/arch/arm/boot/dts/bcm2835.dtsi index 0890d97e674d..659b6e9513b1 100644 --- a/arch/arm/boot/dts/bcm2835.dtsi +++ b/arch/arm/boot/dts/bcm2835.dtsi @@ -24,6 +24,10 @@ }; }; +&cpu_thermal { + coefficients = <(-538) 407000>; +}; + /* enable thermal sensor with the correct compatible property set */ &thermal { compatible = "brcm,bcm2835-thermal"; diff --git a/arch/arm/boot/dts/bcm2836.dtsi b/arch/arm/boot/dts/bcm2836.dtsi index 519a44f5d25a..da3deeb42592 100644 --- a/arch/arm/boot/dts/bcm2836.dtsi +++ b/arch/arm/boot/dts/bcm2836.dtsi @@ -77,6 +77,10 @@ interrupts = <8>; }; +&cpu_thermal { + coefficients = <(-538) 407000>; +}; + /* enable thermal sensor with the correct compatible property set */ &thermal { compatible = "brcm,bcm2836-thermal"; diff --git a/arch/arm/boot/dts/bcm283x.dtsi b/arch/arm/boot/dts/bcm283x.dtsi index 561f27d8d922..86a5db53da8f 100644 --- a/arch/arm/boot/dts/bcm283x.dtsi +++ b/arch/arm/boot/dts/bcm283x.dtsi @@ -19,6 +19,26 @@ bootargs = "earlyprintk console=ttyAMA0"; }; + thermal-zones { + cpu_thermal: cpu-thermal { + polling-delay-passive = <0>; + polling-delay = <1000>; + + thermal-sensors = <&thermal>; + + trips { + cpu-crit { + temperature = <80000>; + hysteresis = <0>; + type = "critical"; + }; + }; + + cooling-maps { + }; + }; + }; + soc { compatible = "simple-bus"; #address-cells = <1>; @@ -430,6 +450,7 @@ compatible = "brcm,bcm2835-thermal"; reg = <0x7e212000 0x8>; clocks = <&clocks BCM2835_CLOCK_TSENS>; + #thermal-sensor-cells = <0>; status = "disabled"; }; |