linux-kernel - Re: [PATCH v9 1/2] dt-bindings: phy: mediatek: Add YAML schema for PCIe PHY

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Message-ID: <bb24ceafc7b1df1b2a5cd1b3662d9cc7af6fce0d.camel@mediatek.com>
Date:   Mon, 23 May 2022 10:58:23 +0800
From:   Jianjun Wang <jianjun.wang@...iatek.com>
To:     Chunfeng Yun <chunfeng.yun@...iatek.com>,
        Kishon Vijay Abraham I <kishon@...com>,
        Vinod Koul <vkoul@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        "Chen-Yu Tsai" <wenst@...omium.org>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Krzysztof Kozlowski <krzk@...nel.org>
CC:     Wei-Shun Chang <weishunc@...gle.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-phy@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <rex-bc.chen@...iatek.com>,
        <randy.wu@...iatek.com>, <jieyy.yang@...iatek.com>,
        <chuanjia.liu@...iatek.com>, <qizhong.cheng@...iatek.com>,
        <jian.yang@...iatek.com>
Subject: Re: [PATCH v9 1/2] dt-bindings: phy: mediatek: Add YAML schema for
 PCIe PHY

Hi Chunfeng,

On Mon, 2022-05-23 at 10:23 +0800, Chunfeng Yun wrote:
> On Fri, 2022-05-20 at 14:49 +0800, Jianjun Wang wrote:
> > Add YAML schema documentation for PCIe PHY on MediaTek chipsets.
> > 
> > Signed-off-by: Jianjun Wang <jianjun.wang@...iatek.com>
> > Reviewed-by: Krzysztof Kozlowski <krzk@...nel.org>
> > Reviewed-by: AngeloGioacchino Del Regno <
> > angelogioacchino.delregno@...labora.com>
> > ---
> >  .../bindings/phy/mediatek,pcie-phy.yaml       | 75
> > +++++++++++++++++++
> >  1 file changed, 75 insertions(+)
> >  create mode 100644
> > Documentation/devicetree/bindings/phy/mediatek,pcie-phy.yaml
> > 
...snip...
> > +
> > +  "#phy-cells":
> > +    const: 0
> > +
> > +  nvmem-cells:
> > +    maxItems: 7
> 
> Seems no need 'maxItems', we can get it from items of 'nvmem-cell-
> names'

Please see the comment by Krzysztof[1], I guess we need to add this
'maxTems'.

[1]:
https://lore.kernel.org/lkml/d48c0023-231c-4011-5548-4b260b3fe172@kernel.org/

Thanks.
> 
> > +    description:
> > +      Phandles to nvmem cell that contains the efuse data, if
> > unspecified,
> > +      default value is used.
> > +
> > +  nvmem-cell-names:
> > +    items:
> > +      - const: glb_intr
> > +      - const: tx_ln0_pmos
> > +      - const: tx_ln0_nmos
> > +      - const: rx_ln0
> > +      - const: tx_ln1_pmos
> > +      - const: tx_ln1_nmos
> > +      - const: rx_ln1
> > +
> > +  power-domains:
> > +    maxItems: 1
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - reg-names
> > +  - "#phy-cells"
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    phy@...80000 {
> > +        compatible = "mediatek,mt8195-pcie-phy";
> > +        #phy-cells = <0>;
> > +        reg = <0x11e80000 0x10000>;
> > +        reg-names = "sif";
> > +        nvmem-cells = <&pciephy_glb_intr>,
> > +                      <&pciephy_tx_ln0_pmos>,
> > +                      <&pciephy_tx_ln0_nmos>,
> > +                      <&pciephy_rx_ln0>,
> > +                      <&pciephy_tx_ln1_pmos>,
> > +                      <&pciephy_tx_ln1_nmos>,
> > +                      <&pciephy_rx_ln1>;
> > +        nvmem-cell-names = "glb_intr", "tx_ln0_pmos",
> > +                           "tx_ln0_nmos", "rx_ln0",
> > +                           "tx_ln1_pmos", "tx_ln1_nmos",
> > +                           "rx_ln1";
> > +        power-domains = <&spm 2>;
> > +    };
> 
>