linux-kernel - Re: [PATCH 7/7] ASoC: dt-bindings: mediatek,mt79xx-afe: add audio afe document

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Message-ID: <14913cbb87981eed6f8b72f9e659ed3e25958320.camel@mediatek.com>
Date:   Wed, 14 Jun 2023 03:17:24 +0000
From:   Maso Huang (黃加竹) 
        <Maso.Huang@...iatek.com>
To:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
        "linux-mediatek@...ts.infradead.org" 
        <linux-mediatek@...ts.infradead.org>,
        Trevor Wu (吳文良) <Trevor.Wu@...iatek.com>,
        "krzk@...nel.org" <krzk@...nel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        Allen-KH Cheng (程冠勳) 
        <Allen-KH.Cheng@...iatek.com>,
        "renzhijie2@...wei.com" <renzhijie2@...wei.com>,
        "tiwai@...e.com" <tiwai@...e.com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "arnd@...db.de" <arnd@...db.de>, "perex@...ex.cz" <perex@...ex.cz>,
        "angelogioacchino.delregno@...labora.com" 
        <angelogioacchino.delregno@...labora.com>,
        Jiaxin Yu (俞家鑫) <Jiaxin.Yu@...iatek.com>
Subject: Re: [PATCH 7/7] ASoC: dt-bindings: mediatek,mt79xx-afe: add audio afe
 document

On Tue, 2023-06-13 at 10:51 +0200, Krzysztof Kozlowski wrote:
>  	 
> External email : Please do not click links or open attachments until
> you have verified the sender or the content.
>  
> On 12/06/2023 12:52, Maso Hunag wrote:
> > From: Maso Huang <maso.huang@...iatek.com>
> > 
> > Add mt79xx audio afe document.
> 
> Please use scripts/get_maintainers.pl to get a list of necessary
> people
> and lists to CC.  It might happen, that command when run on an older
> kernel, gives you outdated entries.  Therefore please be sure you
> base
> your patches on recent Linux kernel.
> 

Hi Krzysztif, 

Thanks for your review. And sorry for missing some necessary
maintainers.
What's your suggestion, resend these patches again with them, or add
them back in v2 patch?

> > 
> > Signed-off-by: Maso Huang <maso.huang@...iatek.com>
> > ---
> >  .../bindings/sound/mediatek,mt79xx-afe.yaml   | 102
> ++++++++++++++++++
> >  1 file changed, 102 insertions(+)
> >  create mode 100644
> Documentation/devicetree/bindings/sound/mediatek,mt79xx-afe.yaml
> > 
> > diff --git
> a/Documentation/devicetree/bindings/sound/mediatek,mt79xx-afe.yaml
> b/Documentation/devicetree/bindings/sound/mediatek,mt79xx-afe.yaml
> > new file mode 100644
> > index 000000000000..11ef1cfdf49b
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/sound/mediatek,mt79xx-
> afe.yaml
> > @@ -0,0 +1,102 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/sound/mediatek,mt79xx-afe.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: MediaTek AFE PCM controller for MT79xx
> 
> 79XX sounds weird. Are you sure you are not using wildcards (which
> are
> not allowed)?
> 

We would like to use mt79xx for mt7986/mt7981/mt7988 series.
Or is it better to just use mt7986 for this series?

> > +
> > +maintainers:
> > +  - Maso Huang <maso.huang@...iatek.com>
> > +
> > +properties:
> > +  compatible:
> > +    oneOf:
> > +      - const: mediatek,mt79xx-afe
> > +      - items:
> > +          - enum:
> > +              - mediatek,mt7981-afe
> > +              - mediatek,mt7986-afe
> > +              - mediatek,mt7988-afe
> > +          - const: mediatek,mt79xx-afe
> 
> I already saw AFE, why it cannot be part of existing bindings?
> 
> This list is odd. 79xx, 7981? So it is wildcard?
> 

Yes, it is wildcard for mt7986/mt7981/mt7988 series.
Is it better to just use mt7986 for this series? 

> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  interrupts:
> > +    maxItems: 1
> > +
> > +  clocks:
> > +    minItems: 5
> > +    items:
> > +      - description: audio bus clock
> > +      - description: audio 26M clock
> > +      - description: audio intbus clock
> > +      - description: audio hopping clock
> > +      - description: audio pll clock
> > +      - description: mux for pcm_mck
> > +      - description: audio i2s/pcm mck
> > +
> > +  clock-names:
> > +    minItems: 5
> > +    items:
> > +      - const: aud_bus_ck
> > +      - const: aud_26m_ck
> > +      - const: aud_l_ck
> > +      - const: aud_aud_ck
> > +      - const: aud_eg2_ck
> > +      - const: aud_sel
> > +      - const: aud_i2s_m
> 
> Why this is variable?
> 

mt7986/mt7981/mt7988 need different numbers of clock.
mt7986 needs first five clocks.
mt7981 needs first six clocks.
mt7988 needs all seven clocks.


> > +
> > +  assigned-clocks:
> > +    minItems: 3
> > +    maxItems: 4
> 
> Drop assigned-clocks
> 
> 

OK, I'll drop it in next patch.

> > +
> > +  assigned-clock-parents:
> > +    minItems: 3
> > +    maxItems: 4
> 
> Drop
> 
> 

OK, I'll drop it in next patch.

> 
> Best regards,
> Krzysztof
> 

Best regards,
Maso