linux-kernel - Re: [PATCH v10 1/3] dt-bindings: mmc: mtk-sd: extend interrupts and pinctrls properties

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Date:   Mon, 23 May 2022 15:52:28 +0800
From:   Axe Yang <axe.yang@...iatek.com>
To:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        "Ulf Hansson" <ulf.hansson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        "Chaotian Jing" <chaotian.jing@...iatek.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Adrian Hunter <adrian.hunter@...el.com>
CC:     Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        Satya Tangirala <satyat@...gle.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Lucas Stach <dev@...xeye.de>,
        Eric Biggers <ebiggers@...gle.com>,
        Andrew Jeffery <andrew@...id.au>,
        Stephen Boyd <swboyd@...omium.org>,
        Kiwoong Kim <kwmad.kim@...sung.com>,
        Yue Hu <huyue2@...ong.com>, Tian Tao <tiantao6@...ilicon.com>,
        <linux-mmc@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <Project_Global_Chrome_Upstream_Group@...iatek.com>
Subject: Re: [PATCH v10 1/3] dt-bindings: mmc: mtk-sd: extend interrupts and
 pinctrls properties

On Thu, 2022-05-19 at 13:18 +0200, AngeloGioacchino Del Regno wrote:
> Il 19/05/22 13:13, Axe Yang ha scritto:
> > Extend interrupts and pinctrls for SDIO wakeup interrupt feature.
> > This feature allow SDIO devices alarm asynchronous interrupt to
> > host
> > even when host stop providing clock to SDIO card. An extra wakeup
> > interrupt and pinctrl states for SDIO DAT1 pin state switching are
> > required in this scenario.
> > 
> > Signed-off-by: Axe Yang <axe.yang@...iatek.com>
> > ---
> >   .../devicetree/bindings/mmc/mtk-sd.yaml       | 53
> > ++++++++++++++++++-
> >   1 file changed, 52 insertions(+), 1 deletion(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
> > b/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
> > index 2a2e9fa8c188..b068ab67a054 100644
> > --- a/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
> > +++ b/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
> > @@ -72,12 +72,26 @@ properties:
> >         - const: ahb_cg
> >   
> >     interrupts:
> > -    maxItems: 1
> > +    description:
> > +      Should at least contain MSDC GIC interrupt. To support SDIO
> > in-band wakeup, an extended
> > +      interrupt is required and be configured as wakeup source
> > irq.
> > +    minItems: 1
> > +    maxItems: 2
> > +
> > +  interrupt-names:
> > +    items:
> > +      - const: msdc_irq
> >   
> 
> That ain't right. You have two interrupts, so you describe two
> interrupts:
> 
> interrupt-names:
>    minItems: 1
>    items:
>      - const: msdc
>      - const: sdio-wakeup
> 
Fixed in v11.

> ...also, I personally don't like the "_irq" suffix: we're specifying
> interrupts in
> interrupt-names, so it sounds a bit redundant.
> 
> You're free to keep it, if you really like it though.

Totally agree with that. The suffix is removed in v11.

Regards,
Axe