linux-kernel - Re: [PATCH v3] dt-bindings: thermal: mediatek: Add LVTS thermal controllers

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Date:   Wed, 1 Feb 2023 14:34:55 +0100
From:   Balsam CHIHI <bchihi@...libre.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     daniel.lezcano@...aro.org, angelogioacchino.delregno@...labora.com,
        rafael@...nel.org, amitk@...nel.org, rui.zhang@...el.com,
        matthias.bgg@...il.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, rdunlap@...radead.org,
        ye.xingchen@....com.cn, p.zabel@...gutronix.de,
        linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, devicetree@...r.kernel.org,
        khilman@...libre.com, james.lo@...iatek.com,
        rex-bc.chen@...iatek.com
Subject: Re: [PATCH v3] dt-bindings: thermal: mediatek: Add LVTS thermal controllers

Hi Krzysztof

On Wed, Feb 1, 2023 at 8:46 AM Krzysztof Kozlowski
<krzysztof.kozlowski@...aro.org> wrote:
>
> On 31/01/2023 15:04, bchihi@...libre.com wrote:
> > From: Balsam CHIHI <bchihi@...libre.com>
> >
> > Add LVTS thermal controllers dt-binding definition for mt8195.
> >
> > Signed-off-by: Balsam CHIHI <bchihi@...libre.com>
> > ---
> > Changelog:
> >   v3:
> >      - Fixed subject prefix
> >      - Fixed licenses GPL-2.0-only OR BSD-2-Clause
> >        to GPL-2.0 OR MIT (to match DT)
> >      - Fixed matching dt-binding file names
>
> If this is v3 with only one patch, where is the driver or DTS using
> these bindings? Please link it. It's unusual to see only bindings,
> without the users.

sorry, I'll be careful next time.
and I will take into account the new change requests in the next full
version of the series.
I apologize for the mess.

>
> >   v2:
> >      - Fixed subject prefix
> >      - Fixed licenses GPL-2.0+ to GPL-2.0
> >      - Added dual licenses
>
> Is there a reason to make our review more difficult and keep versions
> broken, threads attached to some other threads?

sorry again.

>
> ------------
>
> Grabbing thread from
> lore.kernel.org/all/20230131140439.600164-1-bchihi%40baylibre.com/t.mbox.gz
> Checking for newer revisions on https://lore.kernel.org/all/
> Analyzing 38 messages in the thread
> Will use the latest revision: v12
> You can pick other revisions using the -vN flag
> Checking attestation on all messages, may take a moment...
> ---
>   ✓ [PATCH v12] thermal: drivers: mediatek: Add the Low Voltage Thermal
> Sensor driver
>     ✓ Signed: DKIM/baylibre-com.20210112.gappssmtp.com (From:
> bchihi@...libre.com)
>     + Link:
> https://lore.kernel.org/r/20230131153816.21709-1-bchihi@baylibre.com
>   ✓ [PATCH v12 2/6] dt-bindings: thermal: mediatek: Add LVTS thermal
> controllers dt-binding definition
>     ✓ Signed: DKIM/baylibre-com.20210112.gappssmtp.com (From:
> bchihi@...libre.com)
>     + Link:
> https://lore.kernel.org/r/20230126161048.94089-1-bchihi@baylibre.com
>   ERROR: missing [3/1]!
>   ERROR: missing [4/1]!
>   ERROR: missing [5/1]!
>   ERROR: missing [6/1]!
>
> --------
>
> b4 diff '<20230131140439.600164-1-bchihi@...libre.com>'
> Checking for older revisions on https://lore.kernel.org/all/
> ---
> Analyzing 38 messages in the thread
> Assuming new revision: v4 ([PATCH v12] thermal: drivers: mediatek: Add
> the Low Voltage Thermal Sensor driver)
> Preparing fake-am for v3: dt-bindings: thermal: mediatek: Add LVTS
> thermal controllers
>   range: 291580cde5f6..de7fe5e0293a
> Preparing fake-am for v12: arm64: dts: mediatek: mt8195: Add thermal
> zones and thermal nodes
>   ERROR: Could not find matching blob for
> arch/arm64/boot/dts/mediatek/mt8195.dtsi (09df105f4606)
>          If you know on which tree this patchset is based,
>          add it as a remote and perform "git remote update"
>          in order to fetch the missing objects.
> ---
> Could not create fake-am range for upper series v12
>
>
> > ---
> > ---
> >  .../thermal/mediatek,lvts-thermal.yaml        | 107 ++++++++++++++++++
> >  .../thermal/mediatek,lvts-thermal.h           |  19 ++++
> >  2 files changed, 126 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/thermal/mediatek,lvts-thermal.yaml
> >  create mode 100644 include/dt-bindings/thermal/mediatek,lvts-thermal.h
> >
> > diff --git a/Documentation/devicetree/bindings/thermal/mediatek,lvts-thermal.yaml b/Documentation/devicetree/bindings/thermal/mediatek,lvts-thermal.yaml
> > new file mode 100644
> > index 000000000000..5fa5c7a1a417
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/thermal/mediatek,lvts-thermal.yaml
> > @@ -0,0 +1,107 @@
> > +# SPDX-License-Identifier: (GPL-2.0 OR MIT)
>
> WARNING: DT binding documents should be licensed (GPL-2.0-only OR
> BSD-2-Clause)
> #24: FILE:
> Documentation/devicetree/bindings/thermal/mediatek,lvts-thermal.yaml:1:
> +# SPDX-License-Identifier: (GPL-2.0 OR MIT)
>
> I asked you to use the binding license for header file. Then you changed
> binding license... why? Why do you need other SPDX text? Why do you need
> MIT?

I will put it back "GPL-2.0-only OR BSD-2-Clause" in the binding and
do the same for the header.

>
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/thermal/mediatek,lvts-thermal.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: MediaTek SoC Low Voltage Thermal Sensor (LVTS)
> > +
> > +maintainers:
> > +  - Balsam CHIHI <bchihi@...libre.com>
> > +
> > +description: |
> > +  LVTS is a thermal management architecture composed of three subsystems,
> > +  a Sensing device - Thermal Sensing Micro Circuit Unit (TSMCU),
> > +  a Converter - Low Voltage Thermal Sensor converter (LVTS), and
> > +  a Digital controller (LVTS_CTRL).
> > +
> > +properties:
> > +  compatible:
> > +    enum:
> > +      - mediatek,mt8195-lvts-ap
> > +      - mediatek,mt8195-lvts-mcu
>
> What about other devices? You called the file name as generic for all
> Mediatek SoCs, so why only one SoC is here? Is there going to be more?
> If yes, why they cannot be added now?

Yes, there is another MTK SoC mt8192 that supports LVTS,
I was asked in v10 of the series to remove the unimplemented SoC.
It will be added later with the driver that supports it.
just let me know if you still want to add mt8192 bindings in the next
version without the driver.
(LVTS support for mt8192 will be sent in a different series).

>
> Best regards,
> Krzysztof
>