linux-kernel - Re: [PATCH 2/3] dt-bindings: mfd: atmel,hlcdc: Convert to DT schema format

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Message-ID: <551c6be6-9d48-4891-ad17-12e3c64cca8b@microchip.com>
Date: Thu, 18 Jan 2024 05:50:29 +0000
From: <Dharma.B@...rochip.com>
To: <krzysztof.kozlowski@...aro.org>, <sam@...nborg.org>,
	<bbrezillon@...nel.org>, <maarten.lankhorst@...ux.intel.com>,
	<mripard@...nel.org>, <tzimmermann@...e.de>, <airlied@...il.com>,
	<daniel@...ll.ch>, <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
	<conor+dt@...nel.org>, <Nicolas.Ferre@...rochip.com>,
	<alexandre.belloni@...tlin.com>, <claudiu.beznea@...on.dev>,
	<dri-devel@...ts.freedesktop.org>, <devicetree@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
	<lee@...nel.org>, <thierry.reding@...il.com>,
	<u.kleine-koenig@...gutronix.de>, <linux-pwm@...r.kernel.org>
Subject: Re: [PATCH 2/3] dt-bindings: mfd: atmel,hlcdc: Convert to DT schema
 format

On 17/01/24 1:07 pm, Krzysztof Kozlowski wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> On 17/01/2024 03:22, Dharma.B@...rochip.com wrote:
>> Hi Krzysztof,
>> On 10/01/24 11:31 pm, Krzysztof Kozlowski wrote:
>>> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
>>>
>>> On 10/01/2024 11:25, Dharma Balasubiramani wrote:
>>>> Convert the atmel,hlcdc binding to DT schema format.
>>>>
>>>> Signed-off-by: Dharma Balasubiramani <dharma.b@...rochip.com>
>>>> ---
>>>>    .../devicetree/bindings/mfd/atmel,hlcdc.yaml  | 106 ++++++++++++++++++
>>>>    .../devicetree/bindings/mfd/atmel-hlcdc.txt   |  56 ---------
>>>>    2 files changed, 106 insertions(+), 56 deletions(-)
>>>>    create mode 100644 Documentation/devicetree/bindings/mfd/atmel,hlcdc.yaml
>>>>    delete mode 100644 Documentation/devicetree/bindings/mfd/atmel-hlcdc.txt
>>>>
>>>> diff --git a/Documentation/devicetree/bindings/mfd/atmel,hlcdc.yaml b/Documentation/devicetree/bindings/mfd/atmel,hlcdc.yaml
>>>> new file mode 100644
>>>> index 000000000000..555d6faa9104
>>>> --- /dev/null
>>>> +++ b/Documentation/devicetree/bindings/mfd/atmel,hlcdc.yaml
>>>
>>> This looks not tested, so limited review follows:
>> I acknowledge that I didn't test the patches individually. I appreciate
>> your understanding. Taken care in v2.
>>>
>>>> @@ -0,0 +1,106 @@
>>>> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
>>>> +# Copyright (C) 2024 Microchip Technology, Inc. and its subsidiaries
>>>> +%YAML 1.2
>>>> +---
>>>> +$id: http://devicetree.org/schemas/mfd/atmel,hlcdc.yaml#
>>>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>>>> +
>>>> +title: Atmel's HLCDC (High LCD Controller) MFD driver
>>>
>>> Drop "MFD driver" and rather describe/name the hardware. MFD is Linux
>>> term, so I really doubt that's how this was called.
>> Done.
>>>
>>>> +
>>>> +maintainers:
>>>> +  - Nicolas Ferre <nicolas.ferre@...rochip.com>
>>>> +  - Alexandre Belloni <alexandre.belloni@...tlin.com>
>>>> +  - Claudiu Beznea <claudiu.beznea@...on.dev>
>>>> +
>>>> +description: |
>>>> +  Device-Tree bindings for Atmel's HLCDC (High LCD Controller) MFD driver.
>>>
>>> Drop
>> Done.
>>>
>>>> +  The HLCDC IP exposes two subdevices:
>>>> +  # a PWM chip: see ../pwm/atmel,hlcdc-pwm.yaml
>>>> +  # a Display Controller: see ../display/atmel/atmel,hlcdc-dc.yaml
>>>
>>> Rephrase to describe hardware. Drop redundant paths.
>> Sure, I will truncate this to "subdevices: a PWM chip and a display
>> controller." & drop the |.
>>
>> I added description about those two subdevices below.
> 
> Then why do you still keep there comments? # is a comment.
Sure, I will drop the comments here.
> ...
> 
>> in v3.
>>>
>>>> +
>>>> +  hlcdc-display-controller:
>>>
>>> Does anything depend on the name? If not, then just display-controller
>> Got an error "'hlcdc-display-controller' does not match any of the
>> regexes: 'pinctrl-[0-9]+'" so I retained it in v2,but as conor advised
>> to have node names generic and we can easily adopt, I will modify it in v3.
> 
> That's not a dependency. I was talking about any users of the binding.
> User of a binding is for example: Linux kernel driver, other open-source
> projects, out-of-tree projects.
Sure, I will go with generic names 'display-controller' and 'pwm'.

-- 
With Best Regards,
Dharma B.
> 
> 
> Best regards,
> Krzysztof
>