linux-kernel - Re: [PATCH v4 2/9] dt-bindings: rtc: mediatek: convert MT6397 rtc documentation

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Date:   Mon, 14 Nov 2022 23:57:08 +0100
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Rob Herring <robh@...nel.org>,
        Alexandre Mergnat <amergnat@...libre.com>,
        Fabien Parent <fabien.parent@...aro.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Sean Wang <sean.wang@...iatek.com>,
        Mark Brown <broonie@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Lee Jones <lee@...nel.org>,
        Chen Zhong <chen.zhong@...iatek.com>,
        Alessandro Zummo <a.zummo@...ertech.it>,
        Pavel Machek <pavel@....cz>,
        Liam Girdwood <lgirdwood@...il.com>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        linux-leds@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-input@...r.kernel.org,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Fabien Parent <fparent@...libre.com>,
        linux-rtc@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        devicetree@...r.kernel.org,
        Mattijs Korpershoek <mkorpershoek@...libre.com>
Subject: Re: [PATCH v4 2/9] dt-bindings: rtc: mediatek: convert MT6397 rtc
 documentation

On 10/11/2022 15:14:01+0100, Krzysztof Kozlowski wrote:
> On 09/11/2022 23:57, Alexandre Belloni wrote:
> > On 09/11/2022 16:29:16-0600, Rob Herring wrote:
> >> On Tue, Nov 08, 2022 at 07:43:37PM +0100, Alexandre Mergnat wrote:
> >>> - Convert rtc/rtc-mt6397.txt to rtc/mt6397-rtc.yaml
> >>> - Add mediatek,mt6357-rtc compatible.
> >>> - Add maintainer
> >>> - Remove the .txt binding file
> >>>
> >>> Signed-off-by: Alexandre Mergnat <amergnat@...libre.com>
> >>> ---
> >>>  Documentation/devicetree/bindings/mfd/mt6397.txt   |  2 +-
> >>>  .../bindings/rtc/mediatek,mt6397-rtc.yaml          | 40 ++++++++++++++++++++++
> >>>  .../devicetree/bindings/rtc/rtc-mt6397.txt         | 31 -----------------
> >>>  3 files changed, 41 insertions(+), 32 deletions(-)
> >>>
> >>> diff --git a/Documentation/devicetree/bindings/mfd/mt6397.txt b/Documentation/devicetree/bindings/mfd/mt6397.txt
> >>> index 0088442efca1..79aaf21af8e9 100644
> >>> --- a/Documentation/devicetree/bindings/mfd/mt6397.txt
> >>> +++ b/Documentation/devicetree/bindings/mfd/mt6397.txt
> >>> @@ -33,7 +33,7 @@ Optional subnodes:
> >>>  		- compatible: "mediatek,mt6331-rtc"
> >>>  		- compatible: "mediatek,mt6358-rtc"
> >>>  		- compatible: "mediatek,mt6397-rtc"
> >>> -	For details, see ../rtc/rtc-mt6397.txt
> >>> +	For details, see ../rtc/mediatek,mt6397-rtc.yaml
> >>>  - regulators
> >>>  	Required properties:
> >>>  		- compatible: "mediatek,mt6323-regulator"
> >>> diff --git a/Documentation/devicetree/bindings/rtc/mediatek,mt6397-rtc.yaml b/Documentation/devicetree/bindings/rtc/mediatek,mt6397-rtc.yaml
> >>> new file mode 100644
> >>> index 000000000000..bb48c0150f95
> >>> --- /dev/null
> >>> +++ b/Documentation/devicetree/bindings/rtc/mediatek,mt6397-rtc.yaml
> >>> @@ -0,0 +1,40 @@
> >>> + # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> >>> +%YAML 1.2
> >>> +---
> >>> +$id: http://devicetree.org/schemas/rtc/mediatek,mt6397-rtc.yaml#
> >>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> >>> +
> >>> +title: MediaTek MT6397/MT6366/MT6358/MT6357/MT6323 RTC
> >>> +
> >>> +maintainers:
> >>> +  - Alexandre Mergnat <amergnat@...libre.com>
> >>> +
> >>> +description: |
> >>> +  MediaTek PMIC based RTC is an independent function of MediaTek PMIC that works
> >>> +  as a type of multi-function device (MFD). The RTC can be configured and set up
> >>> +  with PMIC wrapper bus which is a common resource shared with the other
> >>> +  functions found on the same PMIC.
> >>> +
> >>> +properties:
> >>> +  compatible:
> >>> +    enum:
> >>> +      - mediatek,mt6323-rtc
> >>> +      - mediatek,mt6357-rtc
> >>> +      - mediatek,mt6358-rtc
> >>> +      - mediatek,mt6366-rtc
> >>> +      - mediatek,mt6397-rtc
> >>
> >> As this is only a compatible string, just fold this into the MFD schema 
> >> doc.
> > 
> > Actually, it probably also supports the start-year property
> 

I checked and it doesn't support it but this needs to be fixed.

> What about rest of rtc.yaml schema?
> 

wakeup-source would make sense but the driver doesn't support it yet.

-- 
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com