linux-kernel - Re: [PATCH v2] dt-bindings: power: Convert bq27xxx dt to yaml

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Message-ID: <57e2495d-ec06-53ff-c2b5-10062da2848f@ti.com>
Date:   Mon, 11 May 2020 09:55:11 -0500
From:   Dan Murphy <dmurphy@...com>
To:     Sebastian Reichel <sebastian.reichel@...labora.com>
CC:     <linux-pm@...r.kernel.org>, <robh@...nel.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        Pali Rohár <pali@...nel.org>,
        "Andrew F . Davis" <afd@...com>
Subject: Re: [PATCH v2] dt-bindings: power: Convert bq27xxx dt to yaml

Sebastian

On 5/11/20 9:57 AM, Sebastian Reichel wrote:
> Hi,
>
> On Mon, May 11, 2020 at 09:29:59AM -0500, Dan Murphy wrote:
>> On 5/11/20 9:32 AM, Sebastian Reichel wrote:
>>> On Mon, May 11, 2020 at 07:25:06AM -0500, Dan Murphy wrote:
>>>> On 5/10/20 11:17 AM, Sebastian Reichel wrote:
>>>>> This needs is missing the power-supplies property. The N900 DT
>>>>> contains a bq27200 referencing the charger, so it should fail the DT
>>>>> check without the property being listed here.
>>>> Hmm.  I ran the dt checker specifically on the binding and it did not fail.
>>>> Unless I need to build some other DTs as well.
>>>> Either I will have the power-supplies property
>>> I just tried it myself. The problem is the way you are specifying
>>> the compatible strings. This is the parsing result:
>>>
>>> enum: ['ti,bq27200 - BQ27200', 'ti,bq27210 - BQ27210', 'ti,bq27500 - deprecated,
>>>         use revision specific property below', ...
>>>
>>> You can see this in Documentation/devicetree/bindings/processed-schema.yaml, which
>>> is generated by running the check. The compatible comments need a # as separation
>>> character like this to generate proper bindings:
>>>
>>> properties:
>>>     compatible:
>>>       enum:
>>>         - ti,bq27200 # BQ27200
>>>         - ti,bq27210 # BQ27210
>>>         - ti,bq27500 # deprecated, use revision specific property below
>> Well honestly not sure why we need the comment either. These are pretty
>> self explanatory maybe we should just remove the additional comments
> Fine with me.
Ack
>
>> Any consideration on just removing the deprecated values?
> Let's keep them with their comment for now. Removing them should
> start with marking them as depracated in the binding and generating
> a runtime warning in the driver, so that people become aware of the
> problem. At least for ti,bq27500 we have mainline users At least for
> ti,bq27500 we have mainline users.

There are only 2 dts files that have this reference unless we are not 
sure which device is actually in use.

Dan


> -- Sebastian