Hello Wei Ni, On Mon, Aug 25, 2014 at 02:29:47PM +0800, Wei Ni wrote: > Add more description for the "polling-delay" property. > Set "trips" and "cooling maps" as optional property, because > if missing these two sub-nodes, the thermal zone device still > work properly. > > Signed-off-by: Wei Ni <w...@nvidia.com> > --- > Documentation/devicetree/bindings/thermal/thermal.txt | 10 ++++++---- > 1 file changed, 6 insertions(+), 4 deletions(-) > > diff --git a/Documentation/devicetree/bindings/thermal/thermal.txt > b/Documentation/devicetree/bindings/thermal/thermal.txt > index f5db6b7..e3d3ed9 100644 > --- a/Documentation/devicetree/bindings/thermal/thermal.txt > +++ b/Documentation/devicetree/bindings/thermal/thermal.txt > @@ -136,8 +136,8 @@ containing trip nodes and one sub-node containing all the > zone cooling maps. > > Required properties: > - polling-delay: The maximum number of milliseconds to wait between polls > - Type: unsigned when checking this thermal zone. > - Size: one cell > + Type: unsigned when checking this thermal zone. If this value is 0, the > + Size: one cell driver will not run polling queue, but just cancel it. >
The description above is specific to Linux kernel implementation nomenclature. DT description needs to be OS agnostic. > - polling-delay-passive: The maximum number of milliseconds to wait > Type: unsigned between polls when performing passive cooling. > @@ -148,14 +148,16 @@ Required properties: > phandles + sensor > specifier > > +Optional property: > - trips: A sub-node which is a container of only trip point nodes > Type: sub-node required to describe the thermal zone. > > - cooling-maps: A sub-node which is a container of only cooling > device > Type: sub-node map nodes, used to describe the relation between trips > - and cooling devices. > + and cooling devices. If missing the "trips" property, > + This sub-node will not be parsed, because no trips can > + be bound to cooling devices. Do you mean if the thermal zone misses the "trips" property? Actually, the binding describes both, cooling-maps and trips, as required properties. Thus, both needs to be in place to consider the thermal zone as a proper described zone. > > -Optional property: > - coefficients: An array of integers (one signed cell) > containing > Type: array coefficients to compose a linear relation > between > Elem size: one cell the sensors listed in the thermal-sensors > property. > -- > 1.8.1.5 > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
