[PATCH v2 1/3] dt-bindings: thermal: samsung: Add tmu-name and sensor-index-ranges properties

Shin Son
2025-09-03T07:36:57Z

The exynosautov920 TMU requires per-sensor interrupt enablement
for its critical trip points.
Add a DT property to the Samsung thermal bindings
to support this requirement:

- **samsung,hw-sensor-indices**: Defines the sensors currently
mapped to the TMU hardware.
Indices not listed are absent or fused off

Additionally, add myself to the bindings' maintainers list, as I plan
to actively work on the exynosautov920 TMU support and handle further
updates in this area.

Signed-off-by: Shin Son <shin.son@samsung.com>
---
.../bindings/thermal/samsung,exynos-thermal.yaml | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/thermal/samsung,exynos-thermal.yaml b/Documentation/devicetree/bindings/thermal/samsung,exynos-thermal.yaml
index 29a08b0729ee..abd89902d33a 100644
--- a/Documentation/devicetree/bindings/thermal/samsung,exynos-thermal.yaml
+++ b/Documentation/devicetree/bindings/thermal/samsung,exynos-thermal.yaml
@@ -8,6 +8,7 @@ title: Samsung Exynos SoC Thermal Management Unit (TMU)

maintainers:
- Krzysztof Kozlowski <krzk@kernel.org>
+ - Shin Son <shin.son@samsung.com>

description: |
For multi-instance tmu each instance should have an alias correctly numbered
@@ -27,6 +28,7 @@ properties:
- samsung,exynos5420-tmu-ext-triminfo
- samsung,exynos5433-tmu
- samsung,exynos7-tmu
+ - samsung,exynosautov920-tmu

clocks:
minItems: 1
@@ -62,11 +64,22 @@ properties:
minItems: 1

'#thermal-sensor-cells':
- const: 0
+ enum:
+ - 0
+ - 1

vtmu-supply:
description: The regulator node supplying voltage to TMU.

+ samsung,hw-sensor-indices:
+ description: |
+ List of hardware sensor indices that are physically present and usable
+ in this TMU instance. Indices not listed are either unmapped or unused.
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ minItems: 1
+ maxItems: 16
+ uniqueItems: true
+
required:
- compatible
- clocks
@@ -131,6 +144,7 @@ allOf:
- samsung,exynos5250-tmu
- samsung,exynos5260-tmu
- samsung,exynos5420-tmu
+ - samsung,exynosautov920-tmu
then:
properties:
clocks:
--
2.50.1