On Wed, May 15, 2019 at 05:36:47PM +0800, Yuantian Tang wrote: > There may be no cooling device on system, or there are no enough > cooling devices for each thermal zone in multiple thermal zone > cases since cooling devices can't be shared. > So make this property optional to remove such limitations. Yeah, I am not sure that is enough reason to make this property optional. Let me maybe ask you why do you care creating a thermal zone if your control has no actions? Or rather, why bothering setting up a control that has no actuators? > > Signed-off-by: Yuantian Tang <andy.tang@xxxxxxx> > --- > .../devicetree/bindings/thermal/thermal.txt | 4 ++-- > 1 files changed, 2 insertions(+), 2 deletions(-) > > diff --git a/Documentation/devicetree/bindings/thermal/thermal.txt b/Documentation/devicetree/bindings/thermal/thermal.txt > index ca14ba9..694e834 100644 > --- a/Documentation/devicetree/bindings/thermal/thermal.txt > +++ b/Documentation/devicetree/bindings/thermal/thermal.txt > @@ -142,11 +142,11 @@ Required properties: > - trips: A sub-node which is a container of only trip point nodes > Type: sub-node required to describe the thermal zone. > > + > +Optional property: > - 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. > - > -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. > -- > 1.7.1 >
