[PATCH v2 1/8] dt-bindings: thermal: amlogic: Add support for T7

[Ronald Claveau]

On 4/13/26 5:42 PM, Conor Dooley wrote:
> On Mon, Apr 13, 2026 at 12:52:42PM +0200, Ronald Claveau wrote:
>> Add the amlogic,t7-thermal compatible for the Amlogic T7 thermal sensor.
>>
>> Unlike existing variants which use a phandle to the ao-secure syscon,
>> the T7 relies on a secure monitor interface described by a phandle and
>> a sensor index argument.
>>
>> The T7 integrates multiple thermal sensors, all accessed through the
>> same SMC call. The sensor index argument is required to identify which
>> sensor's calibration data the secure monitor should return, as a single
>> SM_THERMAL_CALIB_READ command serves all of them.
>>
>> Introduce the amlogic,secure-monitor property as a phandle-array and
>> make amlogic,ao-secure or amlogic,secure-monitor conditionally required
>> depending on the compatible.
>>
>> Signed-off-by: Ronald Claveau <linux-kernel-dev at aliel.fr>
>> ---
>>  .../bindings/thermal/amlogic,thermal.yaml          | 42 ++++++++++++++++++++--
>>  1 file changed, 40 insertions(+), 2 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/thermal/amlogic,thermal.yaml b/Documentation/devicetree/bindings/thermal/amlogic,thermal.yaml
>> index 70b273271754b..1c096116b2dda 100644
>> --- a/Documentation/devicetree/bindings/thermal/amlogic,thermal.yaml
>> +++ b/Documentation/devicetree/bindings/thermal/amlogic,thermal.yaml
>> @@ -21,7 +21,9 @@ properties:
>>                - amlogic,g12a-cpu-thermal
>>                - amlogic,g12a-ddr-thermal
>>            - const: amlogic,g12a-thermal
>> -      - const: amlogic,a1-cpu-thermal
>> +      - enum:
>> +          - amlogic,a1-cpu-thermal
>> +          - amlogic,t7-thermal
>>  
>>    reg:
>>      maxItems: 1
>> @@ -42,12 +44,39 @@ properties:
>>    '#thermal-sensor-cells':
>>      const: 0
>>  
>> +  amlogic,secure-monitor:
>> +    description: phandle to the secure monitor
>> +    $ref: /schemas/types.yaml#/definitions/phandle-array
>> +    items:
>> +      - items:
>> +          - description: phandle to the secure monitor
>> +          - description: sensor index to get specific calibration data
>> +
>>  required:
>>    - compatible
>>    - reg
>>    - interrupts
>>    - clocks
>> -  - amlogic,ao-secure
>> +
>> +allOf:
>> +  - if:
>> +      properties:
>> +        compatible:
>> +          contains:
>> +            enum:
>> +              - amlogic,a1-cpu-thermal
>> +              - amlogic,g12a-thermal
>> +    then:
>> +      required:
>> +        - amlogic,ao-secure
>> +  - if:
>> +      properties:
>> +        compatible:
>> +          contains:
>> +            const: amlogic,t7-thermal
> 
> This can just be replaced by a else I think.
> 

Thank you for your feedback, I will replace this `if` condition by an
`else`.

>> +    then:
>> +      required:
>> +        - amlogic,secure-monitor
>>  
>>  unevaluatedProperties: false
>>  
>> @@ -62,4 +91,13 @@ examples:
>>          #thermal-sensor-cells = <0>;
>>          amlogic,ao-secure = <&sec_AO>;
>>      };
>> +  - |
>> +    a73_tsensor: temperature-sensor at 20000 {
> 
> Can drop the label here, it has no users.
> 

Ok, I will remove this label.

> Otherwise, seems fine.
> 
> Cheers,
> Conor.
> 
> pw-bot: changes-requested
> 
>> +        compatible = "amlogic,t7-thermal";
>> +        reg = <0x0 0x20000 0x0 0x50>;
>> +        interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>;
>> +        clocks = <&clkc_periphs CLKID_TS>;
>> +        #thermal-sensor-cells = <0>;
>> +        amlogic,secure-monitor = <&sm 1>;
>> +    };
>>  ...
>>
>> -- 
>> 2.49.0
>>


-- 
Best regards,
Ronald