[v3,1/4] dt-bindings: thermal: k3-j72xx: Add VTM bindings documentation

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@ti.com>
---
 .../bindings/thermal/ti,j72xx-thermal.yaml    | 62 +++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml

On Mon, Oct 25, 2021 at 11:36:00PM +0530, 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@ti.com>
> ---
>  .../bindings/thermal/ti,j72xx-thermal.yaml    | 62 +++++++++++++++++++
>  1 file changed, 62 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..8483c495cb9a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml
> @@ -0,0 +1,62 @@
> +# 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@ti.com>
> +
> +properties:
> +  compatible:
> +    const: ti,j721e-vtm
> +    oneOf:
> +      - enum:
> +          - ti,j721e-vtm
> +          - ti,j7200-vtm

Not sure what you are trying to say here, but the 'const' with 'oneOf' 
isn't correct. If it is just 1 of either compatible string, you want 
just 'enum' part:

compatible:
  enum:
    - ti,j721e-vtm
    - ti,j7200-vtm

> +
> +  reg:
> +    maxItems: 3

Need to define what each entry is.

> +
> +  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: wkup_vtm0@42040000 {
> +        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";
> +                };
> +        };
> +    };
> +...
> -- 
> 2.17.1
> 
>