1. Patchew
  2. linux
  3. [PATCH v7 0/6] thermal: renesas: Add support for RZ/G3E
  4. View patch

[PATCH v7 2/6] dt-bindings: thermal: r9a09g047-tsu: Document the TSU unit

John Madieu posted 6 patches 1 month, 2 weeks ago
Only 5 patches received!
There is a newer version of this series
[PATCH v7 2/6] dt-bindings: thermal: r9a09g047-tsu: Document the TSU unit
Posted by John Madieu 1 month, 2 weeks ago 
The Renesas RZ/G3E SoC includes a Thermal Sensor Unit (TSU) block designed
to measure the junction temperature. The device provides real-time
temperature measurements for thermal management, utilizing a single
dedicated channel (channel 1) for temperature sensing.

Signed-off-by: John Madieu <john.madieu.xa@bp.renesas.com>
---

Changes:

v1 -> v2:
 * Fixes reg property specifier to get rid of yamlint warnings
 * Fixes IRQ name to reflect TSU expectations

v2 -> v3:
 * Removees useless 'renesas,tsu-operating-mode' property 

v3 -> v4:
 * Fixes commit message
 * Fixes interrupt description
 * Removes trip point definition

v5: no changes
v6: no changes
v7: Adds documentation for 'renesas,tsu-trim' and removes Rb tag from Krzysztof
    due to this change

 .../thermal/renesas,r9a09g047-tsu.yaml        | 87 +++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/thermal/renesas,r9a09g047-tsu.yaml

diff --git a/Documentation/devicetree/bindings/thermal/renesas,r9a09g047-tsu.yaml b/Documentation/devicetree/bindings/thermal/renesas,r9a09g047-tsu.yaml
new file mode 100644
index 000000000000..70d2af6fcd78
--- /dev/null
+++ b/Documentation/devicetree/bindings/thermal/renesas,r9a09g047-tsu.yaml
@@ -0,0 +1,87 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/thermal/renesas,r9a09g047-tsu.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas RZ/G3E Temperature Sensor Unit (TSU)
+
+maintainers:
+  - John Madieu <john.madieu.xa@bp.renesas.com>
+
+description:
+  The Temperature Sensor Unit (TSU) is an integrated thermal sensor that
+  monitors the chip temperature on the Renesas RZ/G3E SoC. The TSU provides
+  real-time temperature measurements for thermal management.
+
+properties:
+  compatible:
+    const: renesas,r9a09g047-tsu
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  resets:
+    maxItems: 1
+
+  power-domains:
+    maxItems: 1
+
+  interrupts:
+    items:
+      - description: Conversion complete interrupt signal (pulse)
+      - description: Comparison result interrupt signal (level)
+
+  interrupt-names:
+    items:
+      - const: adi
+      - const: adcmpi
+
+  "#thermal-sensor-cells":
+    const: 0
+
+  renesas,tsu-trim:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    items:
+      - items:
+          - description: phandle to system controller
+          - description: offset of trim registers
+    description: |
+      Phandle and offset to the system controller containing the TSU
+      calibration trim values. The offset points to the first trim
+      register (OTPTSU1TRMVAL0), with the second trim register
+      (OTPTSU1TRMVAL1) located at offset + 4.
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - resets
+  - power-domains
+  - interrupts
+  - interrupt-names
+  - "#thermal-sensor-cells"
+  - renesas,tsu-trim
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/renesas,r9a09g047-cpg.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    tsu: thermal@14002000 {
+        compatible = "renesas,r9a09g047-tsu";
+        reg = <0x14002000 0x1000>;
+        clocks = <&cpg CPG_MOD 0x10a>;
+        resets = <&cpg 0xf8>;
+        power-domains = <&cpg>;
+        interrupts = <GIC_SPI 250 IRQ_TYPE_EDGE_RISING>,
+                     <GIC_SPI 251 IRQ_TYPE_LEVEL_HIGH>;
+        interrupt-names = "adi", "adcmpi";
+        #thermal-sensor-cells = <0>;
+        renesas,tsu-trim = <&sys 0x330>;
+    };
-- 
2.25.1
Re: [PATCH v7 2/6] dt-bindings: thermal: r9a09g047-tsu: Document the TSU unit
Posted by Rob Herring 1 month, 2 weeks ago 
On Mon, Aug 18, 2025 at 06:28:48PM +0200, John Madieu wrote:
> The Renesas RZ/G3E SoC includes a Thermal Sensor Unit (TSU) block designed
> to measure the junction temperature. The device provides real-time
> temperature measurements for thermal management, utilizing a single
> dedicated channel (channel 1) for temperature sensing.
> 
> Signed-off-by: John Madieu <john.madieu.xa@bp.renesas.com>
> ---
> 
> Changes:
> 
> v1 -> v2:
>  * Fixes reg property specifier to get rid of yamlint warnings
>  * Fixes IRQ name to reflect TSU expectations
> 
> v2 -> v3:
>  * Removees useless 'renesas,tsu-operating-mode' property 
> 
> v3 -> v4:
>  * Fixes commit message
>  * Fixes interrupt description
>  * Removes trip point definition
> 
> v5: no changes
> v6: no changes
> v7: Adds documentation for 'renesas,tsu-trim' and removes Rb tag from Krzysztof
>     due to this change
> 
>  .../thermal/renesas,r9a09g047-tsu.yaml        | 87 +++++++++++++++++++
>  1 file changed, 87 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/thermal/renesas,r9a09g047-tsu.yaml
> 
> diff --git a/Documentation/devicetree/bindings/thermal/renesas,r9a09g047-tsu.yaml b/Documentation/devicetree/bindings/thermal/renesas,r9a09g047-tsu.yaml
> new file mode 100644
> index 000000000000..70d2af6fcd78
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/thermal/renesas,r9a09g047-tsu.yaml
> @@ -0,0 +1,87 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/thermal/renesas,r9a09g047-tsu.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Renesas RZ/G3E Temperature Sensor Unit (TSU)
> +
> +maintainers:
> +  - John Madieu <john.madieu.xa@bp.renesas.com>
> +
> +description:
> +  The Temperature Sensor Unit (TSU) is an integrated thermal sensor that
> +  monitors the chip temperature on the Renesas RZ/G3E SoC. The TSU provides
> +  real-time temperature measurements for thermal management.
> +
> +properties:
> +  compatible:
> +    const: renesas,r9a09g047-tsu
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +
> +  resets:
> +    maxItems: 1
> +
> +  power-domains:
> +    maxItems: 1
> +
> +  interrupts:
> +    items:
> +      - description: Conversion complete interrupt signal (pulse)
> +      - description: Comparison result interrupt signal (level)
> +
> +  interrupt-names:
> +    items:
> +      - const: adi
> +      - const: adcmpi
> +
> +  "#thermal-sensor-cells":
> +    const: 0
> +
> +  renesas,tsu-trim:
> +    $ref: /schemas/types.yaml#/definitions/phandle-array
> +    items:
> +      - items:
> +          - description: phandle to system controller
> +          - description: offset of trim registers
> +    description: |

Don't need '|' and wrap at 80 char.

> +      Phandle and offset to the system controller containing the TSU
> +      calibration trim values. The offset points to the first trim
> +      register (OTPTSU1TRMVAL0), with the second trim register
> +      (OTPTSU1TRMVAL1) located at offset + 4.
> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - resets
> +  - power-domains
> +  - interrupts
> +  - interrupt-names
> +  - "#thermal-sensor-cells"
> +  - renesas,tsu-trim
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/renesas,r9a09g047-cpg.h>
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +
> +    tsu: thermal@14002000 {

Drop unused labels.

The prefered node name is 'thermal-sensor'.

With those,

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>

Patchew 2.1-devel-b67e4c2

© 2016 - 2025 Red Hat, Inc.