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authorKrzysztof Kozlowski <k.kozlowski@samsung.com>2016-02-18 06:14:19 +0100
committerEduardo Valentin <edubezval@gmail.com>2016-03-08 23:06:33 +0100
commitfa7b29e8bfa288c8473d0c4a3ac120b3a2707e06 (patch)
tree30ace42afb5507322b7a689dbb211a81d3e6ecb8 /Documentation/devicetree/bindings/thermal
parentthermal: exynos: Document compatible for Exynos5433 TMU (diff)
downloadlinux-fa7b29e8bfa288c8473d0c4a3ac120b3a2707e06.tar.xz
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thermal: exynos: Document number of supported trip-points
Document the number of configurable temperature thresholds (for trip-points in interrupt-driven mode). Acked-by: Rob Herring <robh@kernel.org> Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Diffstat (limited to 'Documentation/devicetree/bindings/thermal')
-rw-r--r--Documentation/devicetree/bindings/thermal/exynos-thermal.txt8
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/thermal/exynos-thermal.txt b/Documentation/devicetree/bindings/thermal/exynos-thermal.txt
index 34315d7fbfde..faa62059b5c5 100644
--- a/Documentation/devicetree/bindings/thermal/exynos-thermal.txt
+++ b/Documentation/devicetree/bindings/thermal/exynos-thermal.txt
@@ -44,6 +44,14 @@
- vtmu-supply: This entry is optional and provides the regulator node supplying
voltage to TMU. If needed this entry can be placed inside
board/platform specific dts file.
+
+The Exynos TMU supports generating interrupts when reaching given
+temperature thresholds. Number of supported thermal trip points depends
+on the SoC (only first trip points defined in DT will be configured):
+ - most of SoC: 4
+ - samsung,exynos5433-tmu: 8
+ - samsung,exynos7-tmu: 8
+
Following properties are mandatory (depending on SoC):
- samsung,tmu_gain: Gain value for internal TMU operation.
- samsung,tmu_reference_voltage: Value of TMU IP block's reference voltage