linux-kernel - Re: [PATCH v3 1/4] dt-bindings: thermal: k3: Add VTM bindings documentation

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Message-ID: <3c1534b7-1ce4-8cf7-1e0a-9f566a66799f@ti.com>
Date:   Mon, 24 Feb 2020 06:44:07 +0530
From:   "J, KEERTHY" <j-keerthy@...com>
To:     Rob Herring <robh@...nel.org>
CC:     Zhang Rui <rui.zhang@...el.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Amit Kucheria <amit.kucheria@...durent.com>,
        Tero Kristo <t-kristo@...com>, <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        "open list:THERMAL" <linux-pm@...r.kernel.org>,
        Mark Rutland <mark.rutland@....com>
Subject: Re: [PATCH v3 1/4] dt-bindings: thermal: k3: Add VTM bindings
 documentation



On 2/21/2020 1:10 AM, Rob Herring wrote:
> On Wed, Feb 19, 2020 at 10:13 PM Keerthy <j-keerthy@...com> wrote:
>>
>>
>>
>> On 19/02/20 8:22 pm, Rob Herring wrote:
>>> On Wed, Feb 19, 2020 at 01:13:11PM +0530, Keerthy wrote:
>>>> Add VTM bindings documentation. In the Voltage Thermal
>>>> Management Module(VTM), K3 AM654 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>
>>>> ---
>>>>
>>>> Changes in v3:
>>>>
>>>>     * Fixed errors seen with:
>>>>       dt_binding_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/thermal/ti,am654-thermal.yaml
>>>>
>>>>    .../bindings/thermal/ti,am654-thermal.yaml    | 57 +++++++++++++++++++
>>>>    1 file changed, 57 insertions(+)
>>>>    create mode 100644 Documentation/devicetree/bindings/thermal/ti,am654-thermal.yaml
>>>>
>>>> diff --git a/Documentation/devicetree/bindings/thermal/ti,am654-thermal.yaml b/Documentation/devicetree/bindings/thermal/ti,am654-thermal.yaml
>>>> new file mode 100644
>>>> index 000000000000..b6dc95c3acab
>>>> --- /dev/null
>>>> +++ b/Documentation/devicetree/bindings/thermal/ti,am654-thermal.yaml
>>>> @@ -0,0 +1,57 @@
>>>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>>>> +%YAML 1.2
>>>> +---
>>>> +$id: http://devicetree.org/schemas/thermal/ti,am654-thermal.yaml#
>>>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>>>> +
>>>> +title: Texas Instruments AM654 VTM (DTS) binding
>>>> +
>>>> +maintainers:
>>>> +  - Keerthy <j-keerthy@...com>
>>>> +
>>>> +properties:
>>>> +  compatible:
>>>> +    const: ti,am654-vtm
>>>> +
>>>> +  reg:
>>>> +    maxItems: 1
>>>> +
>>>> +  power-domains:
>>>> +    maxItems: 1
>>>> +    description: phandle to the associated power domain
>>>
>>> No need to redefine a standard property description.
>>
>> Okay.
>>
>>>
>>>> +
>>>> +  "#thermal-sensor-cells":
>>>> +    const: 1
>>>> +
>>>> +required:
>>>> +  - "#thermal-sensor-cells"
>>>> +  - compatible
>>>> +  - reg
>>>> +  - power-domains
>>>> +
>>>> +additionalProperties: false
>>>> +
>>>> +examples:
>>>> +  - |
>>>> +    #include <dt-bindings/soc/ti,sci_pm_domain.h>
>>>> +    vtm: wkup_vtm0@...50000 {
>>>
>>> thermal-sensor@...
>>>
>>> Use generic node names and don't use '_' in node names
>>
>> vtm stands for voltage thermal manager and comprises of multiple
>> sensors. This is similar to omap bandgap. Should i replace vtm with more
>> generic name like thermal? as used in:
> 
> 'vtm' is a label and source construct only (until you do overlays), so
> I don't care what you put really.

Okay.

I will change in to:

vtm: thermal@...50000 {

Regards,
Keerthy

> 
> Rob
>