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Date: Tue, 26 Aug 2014 08:08:57 -0400 From: Eduardo Valentin <edubezval@...il.com> To: Wei Ni <wni@...dia.com> Cc: khali@...ux-fr.org, linux@...ck-us.net, swarren@...dotorg.org, lm-sensors@...sensors.org, linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH v3 3/4] thermal: add more description for thermal-zones Hi, On Tue, Aug 26, 2014 at 11:03:21AM +0800, Wei Ni wrote: > On 08/25/2014 07:07 PM, Eduardo Valentin wrote: > > 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 <wni@...dia.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. > > Normally, the user may think a delay of 0 means that software > continually polls this zone, but in here it mean no polling. May be it's > better to add this description. > Sure, I am fine adding it. Just please do not use Linux specific nomenclature. > > > >> - 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 majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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