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Add support to check status of the thermal zone before registering the
zone. This will help on disabling some non-existing thermal zone from
the top level DTS file out of common dtsi thermalzone file.
For example,
we have 3 platforms almost same but thermal zones on this platform are
little bit different. Platform 1 and 2 have three thermal zones and
platform 3 has two thermal zones. To avoid duplication of the thermal
zones entries on each DTS file of platforms,we created one common
dtsi file for thermal zone and included this dtsi file from these
3 platform's top level dts file.
On common thermal zone com dtsi file, all thermal zone are enabled and
need to disable one of thermal zone on platform 3 dts file. For this, we
just added entry status = "disabled" for that thermal zone on platform 3
dts file and along with this change to make it work.
This way, we reuse the common file and control the enable/disable of the
thermal zone from top level dts file.
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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When binding cooling devices to thermal zones created from the device
tree the minimum and maximum cooling states are in the wrong order
leading to failure to bind.
Fix the order of cooling states in the call to
thermal_zone_bind_cooling_device to fix this.
Cc:Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Punit Agrawal <punit.agrawal@arm.com>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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It looks like this code is missing braces, otherwise the if
statement shouldn't have been indented. Fix it.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
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This patch introduces a device tree bindings for
describing the hardware thermal behavior and limits.
Also a parser to read and interpret the data and feed
it in the thermal framework is presented.
This patch introduces a thermal data parser for device
tree. The parsed data is used to build thermal zones
and thermal binding parameters. The output data
can then be used to deploy thermal policies.
This patch adds also documentation regarding this
API and how to define tree nodes to use
this infrastructure.
Note that, in order to be able to have control
on the sensor registration on the DT thermal zone,
it was required to allow changing the thermal zone
.get_temp callback. For this reason, this patch
also removes the 'const' modifier from the .ops
field of thermal zone devices.
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
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