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| author |   Maxime Ripard <maxime@cerno.tech> | 2021-07-21 16:04:03 +0200 |
|---|---|---|
| committer |   Daniel Lezcano <daniel.lezcano@linaro.org> | 2021-08-14 15:42:30 +0200 |
| commit | 22fc857538c3a256563bb796f978b6d4693f5aa3 (patch) | |
| tree | f45f5f19c699b33363bdcd9b50d8d376f6fef1bd /Documentation/devicetree/bindings/thermal | |
| parent | thermal/core: Fix thermal_cooling_device_register() prototype (diff) | |
| download | linux-dev-22fc857538c3a256563bb796f978b6d4693f5aa3.tar.xz linux-dev-22fc857538c3a256563bb796f978b6d4693f5aa3.zip | |
dt-bindings: thermal: Make trips node optional
Even though the previous binding made it a required child node, the
implementation in Linux never made it mandatory and just ignored thermal
zones without trip points.
This was even effectively encouraged, since the thermal core wouldn't
allow a thermal sensor to probe without a thermal zone.
In the case where you had a thermal device that had multiple sensors but
with enough knowledge to provide trip points for only a few of them,
this meant that the only way to make that driver probe was to provide a
thermal zone without the trips node required by the binding.
This obviously led to a fair number of device trees doing exactly that,
making the initial binding requirement ineffective.
Let's make it clear by dropping that requirement.
Cc: Amit Kucheria <amitk@kernel.org>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: linux-pm@vger.kernel.org
Cc: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20210721140424.725744-34-maxime@cerno.tech
Diffstat (limited to 'Documentation/devicetree/bindings/thermal')
| -rw-r--r-- | Documentation/devicetree/bindings/thermal/thermal-zones.yaml | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/thermal/thermal-zones.yaml b/Documentation/devicetree/bindings/thermal/thermal-zones.yaml index 164f71598c59..a07de5ed0ca6 100644 --- a/Documentation/devicetree/bindings/thermal/thermal-zones.yaml +++ b/Documentation/devicetree/bindings/thermal/thermal-zones.yaml @@ -215,7 +215,7 @@ patternProperties: - polling-delay - polling-delay-passive - thermal-sensors - - trips + additionalProperties: false additionalProperties: false |