linux-kernel - Re: [PATCH v9 1/2] dt-bindings: thermal: k3-j72xx: Add VTM bindings documentation

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Message-ID: <783127cf-79cf-90f2-4200-30db56a1fd7c@linaro.org>
Date:   Wed, 18 May 2022 10:27:16 +0200
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     Keerthy <j-keerthy@...com>, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, rui.zhang@...el.com,
        amitk@...nel.org, kristo@...nel.org
Cc:     rafael@...nel.org, linux-pm@...r.kernel.org, vigneshr@...com,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v9 1/2] dt-bindings: thermal: k3-j72xx: Add VTM bindings
 documentation


Hi Krzysztof,

I would like to pick this series, does the DT bindings have your blessing ?


On 17/05/2022 19:29, Keerthy wrote:
> Add VTM bindings documentation. In the Voltage Thermal
> Management Module(VTM), K3 J72XX supplies a voltage
> reference and a temperature sensor feature that are gathered in the band
> gap voltage and temperature sensor (VBGAPTS) module. The band
> gap provides current and voltage reference for its internal
> circuits and other analog IP blocks. The analog-to-digital
> converter (ADC) produces an output value that is proportional
> to the silicon temperature.
> 
> Signed-off-by: Keerthy <j-keerthy@...com>
> Reviewed-by: Rob Herring <robh@...nel.org>
> ---
>   .../bindings/thermal/ti,j72xx-thermal.yaml    | 63 +++++++++++++++++++
>   1 file changed, 63 insertions(+)
>   create mode 100644 Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml
> 
> diff --git a/Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml b/Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml
> new file mode 100644
> index 000000000000..c74f124ebfc0
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml
> @@ -0,0 +1,63 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/thermal/ti,j72xx-thermal.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Texas Instruments J72XX VTM (DTS) binding
> +
> +maintainers:
> +  - Keerthy <j-keerthy@...com>
> +
> +properties:
> +  compatible:
> +    enum:
> +      - ti,j721e-vtm
> +      - ti,j7200-vtm
> +
> +  reg:
> +    items:
> +      - description: VTM cfg1 register space
> +      - description: VTM cfg2 register space
> +      - description: VTM efuse register space
> +
> +  power-domains:
> +    maxItems: 1
> +
> +  "#thermal-sensor-cells":
> +    const: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - power-domains
> +  - "#thermal-sensor-cells"
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/soc/ti,sci_pm_domain.h>
> +    wkup_vtm0: thermal-sensor@...40000 {
> +        compatible = "ti,j721e-vtm";
> +        reg = <0x42040000 0x350>,
> +              <0x42050000 0x350>,
> +              <0x43000300 0x10>;
> +        power-domains = <&k3_pds 154 TI_SCI_PD_EXCLUSIVE>;
> +        #thermal-sensor-cells = <1>;
> +    };
> +
> +    mpu_thermal: mpu-thermal {
> +        polling-delay-passive = <250>; /* milliseconds */
> +        polling-delay = <500>; /* milliseconds */
> +        thermal-sensors = <&wkup_vtm0 0>;
> +
> +        trips {
> +            mpu_crit: mpu-crit {
> +                temperature = <125000>; /* milliCelsius */
> +                hysteresis = <2000>; /* milliCelsius */
> +                type = "critical";
> +            };
> +        };
> +    };
> +...


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