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

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Message-ID: <20250903073634.1898865-2-shin.son@samsung.com>
Date: Wed,  3 Sep 2025 16:36:32 +0900
From: Shin Son <shin.son@...sung.com>
To: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>, Krzysztof Kozlowski
	<krzk@...nel.org>, "Rafael J . Wysocki" <rafael@...nel.org>, Daniel Lezcano
	<daniel.lezcano@...aro.org>, Zhang Rui <rui.zhang@...el.com>, Lukasz Luba
	<lukasz.luba@....com>, Rob Herring <robh@...nel.org>, Conor Dooley
	<conor+dt@...nel.org>, Alim Akhtar <alim.akhtar@...sung.com>
Cc: Shin Son <shin.son@...sung.com>, linux-pm@...r.kernel.org,
	linux-samsung-soc@...r.kernel.org, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/3] dt-bindings: thermal: samsung: Add tmu-name and
 sensor-index-ranges properties

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@...sung.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@...nel.org>
+  - Shin Son <shin.son@...sung.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