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Groups > linux.kernel > #1415673
| From | Keerthy <a0393675@ti.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH V3 1/2] thermal: max77620: Add DT binding doc for thermal driver |
| Date | 2016-06-07 06:00 +0200 |
| Message-ID | <rHglj-5QV-3@gated-at.bofh.it> (permalink) |
| References | <rH1mi-4tD-9@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Monday 06 June 2016 05:14 PM, Laxman Dewangan wrote:
> Maxim Semiconductor MAX77620 supports alarm interrupts when
> its die temperature crosses 120C and 140C. These threshold
> temperatures are not configurable.
>
> Add DT binding document to details out the DT property related
> to MAX77620 thermal functionality.
>
> Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
> ---
> .../bindings/thermal/thermal-max77620.txt | 64 ++++++++++++++++++++++
> 1 file changed, 64 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/thermal/thermal-max77620.txt
>
> diff --git a/Documentation/devicetree/bindings/thermal/thermal-max77620.txt b/Documentation/devicetree/bindings/thermal/thermal-max77620.txt
> new file mode 100644
> index 0000000..5a500d5
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/thermal/thermal-max77620.txt
> @@ -0,0 +1,64 @@
> +Thermal driver for MAX77620 Power management IC from Maxim Semiconductor.
> +
> +Maxim Semiconductor MAX77620 supports alarm interrupts when its
> +die temperature crosses 120C and 140C. These threshold temperatures
> +are not configurable. Device does not provide the real temperature
> +of die other than just indicating whether temperature is above or
> +below threshold level.
> +
> +Required properties:
> +-------------------
> +#thermal-sensor-cells: Please refer <devicetree/bindings/thermal/thermal.txt>
> + for more details.
> + The value must be 0.
> +
> +For more details, please refer generic thermal DT binding document
> +<devicetree/bindings/thermal/thermal.txt>.
> +
> +Please refer <devicetree/bindings/mfd/max77620.txt> for mfd DT binding
> +document for the MAX77620.
> +
> +Example:
> +--------
> +#include <dt-bindings/mfd/max77620.h>
> +#include <dt-bindings/thermal/thermal.h>
> +...
> +
> +i2c@7000d000 {
> + spmic: max77620@3c {
> + compatible = "maxim,max77620";
> + :::::
> + #thermal-sensor-cells = <0>;
> + :::
> + };
> +};
> +
> +cool_dev: cool-dev {
> + compatible = "cooling-dev";
> + #cooling-cells = <2>;
> +};
> +
> +thermal-zones {
> + PMIC-Die {
> + polling-delay = <0>;
> + polling-delay-passive = <0>;
> + thermal-sensors = <&spmic>;
> +
> + trips {
> + die_temp_thresh: hot-die {
> + temperature = <120000>;
> + type = "active";
> + hysteresis = <0>;
> + };
> + };
What about 140C? Isn't that a critical trip point?
> +
> + cooling-maps {
> + map0 {
> + trip = <&die_temp_thresh>;
> + cooling-device = <&cool_dev THERMAL_NO_LIMIT
> + THERMAL_NO_LIMIT>;
> + contribution = <100>;
> + };
> + };
> + };
> +};
>
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[PATCH V3 1/2] thermal: max77620: Add DT binding doc for thermal driver Laxman Dewangan <ldewangan@nvidia.com> - 2016-06-06 14:00 +0200
Re: [PATCH V3 1/2] thermal: max77620: Add DT binding doc for thermal driver Keerthy <a0393675@ti.com> - 2016-06-07 06:00 +0200
Re: [PATCH V3 1/2] thermal: max77620: Add DT binding doc for thermal driver Laxman Dewangan <ldewangan@nvidia.com> - 2016-06-07 09:00 +0200
Re: [PATCH V3 1/2] thermal: max77620: Add DT binding doc for thermal driver Keerthy <a0393675@ti.com> - 2016-06-07 09:50 +0200
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