Date:   Fri, 20 Nov 2020 10:25:00 +0800
From:   Chunfeng Yun <chunfeng.yun@...iatek.com>
To:     Chun-Kuang Hu <chunkuang.hu@...nel.org>
CC:     Rob Herring <robh+dt@...nel.org>,
        Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        "David S . Miller" <davem@...emloft.net>,
        "Jakub Kicinski" <kuba@...nel.org>,
        Kishon Vijay Abraham I <kishon@...com>,
        "Vinod Koul" <vkoul@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
        Stanley Chu <stanley.chu@...iatek.com>,
        Min Guo <min.guo@...iatek.com>,
        DRI Development <dri-devel@...ts.freedesktop.org>,
        DTML <devicetree@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        <netdev@...r.kernel.org>,
        "Linux ARM" <linux-arm-kernel@...ts.infradead.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>, <linux-usb@...r.kernel.org>
Subject: Re: [PATCH v3 06/11] dt-bindings: phy: convert HDMI PHY binding to
 YAML schema

On Fri, 2020-11-20 at 07:42 +0800, Chun-Kuang Hu wrote:
> Hi, Chunfeng:
> 
> Chunfeng Yun <chunfeng.yun@...iatek.com> 於 2020年11月18日 週三 下午4:21寫道：
> >
> > Convert HDMI PHY binding to YAML schema mediatek,hdmi-phy.yaml
> >
> > Cc: Chun-Kuang Hu <chunkuang.hu@...nel.org>
> > Signed-off-by: Chunfeng Yun <chunfeng.yun@...iatek.com>
> > Reviewed-by: Rob Herring <robh@...nel.org>
> > ---
> > v3: add Reviewed-by Rob
> > v2: fix binding check warning of reg in example
> > ---
> >  .../display/mediatek/mediatek,hdmi.txt        | 18 +---
> >  .../bindings/phy/mediatek,hdmi-phy.yaml       | 91 +++++++++++++++++++
> >  2 files changed, 92 insertions(+), 17 deletions(-)
> >  create mode 100644 Documentation/devicetree/bindings/phy/mediatek,hdmi-phy.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.txt b/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.txt
> > index 6b1c586403e4..b284ca51b913 100644
> > --- a/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.txt
> > +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.txt
> > @@ -53,23 +53,7 @@ Required properties:
> >
> >  HDMI PHY
> >  ========
> > -
> > -The HDMI PHY serializes the HDMI encoder's three channel 10-bit parallel
> > -output and drives the HDMI pads.
> > -
> > -Required properties:
> > -- compatible: "mediatek,<chip>-hdmi-phy"
> > -- the supported chips are mt2701, mt7623 and mt8173
> > -- reg: Physical base address and length of the module's registers
> > -- clocks: PLL reference clock
> > -- clock-names: must contain "pll_ref"
> > -- clock-output-names: must be "hdmitx_dig_cts" on mt8173
> > -- #phy-cells: must be <0>
> > -- #clock-cells: must be <0>
> > -
> > -Optional properties:
> > -- mediatek,ibias: TX DRV bias current for <1.65Gbps, defaults to 0xa
> > -- mediatek,ibias_up: TX DRV bias current for >1.65Gbps, defaults to 0x1c
> > +See phy/mediatek,hdmi-phy.yaml
> >
> >  Example:
> >
> > diff --git a/Documentation/devicetree/bindings/phy/mediatek,hdmi-phy.yaml b/Documentation/devicetree/bindings/phy/mediatek,hdmi-phy.yaml
> > new file mode 100644
> > index 000000000000..96700bb8bc00
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/phy/mediatek,hdmi-phy.yaml
> > @@ -0,0 +1,91 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +# Copyright (c) 2020 MediaTek
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/phy/mediatek,hdmi-phy.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: MediaTek High Definition Multimedia Interface (HDMI) PHY binding
> > +
> > +maintainers:
> > +  - Chun-Kuang Hu <chunkuang.hu@...nel.org>
> > +  - Chunfeng Yun <chunfeng.yun@...iatek.com>
> 
> Please add Philipp Zabel because he is Mediatek DRM driver maintainer.
Ok, will do it

Thanks a lot

> 
> DRM DRIVERS FOR MEDIATEK
> M: Chun-Kuang Hu <chunkuang.hu at kernel.org>
> M: Philipp Zabel <p.zabel at pengutronix.de>
> L: dri-devel at lists.freedesktop.org
> S: Supported
> F: Documentation/devicetree/bindings/display/mediatek/
> 
> Regards,
> Chun-Kuang.
> 
> > +
> > +description: |
> > +  The HDMI PHY serializes the HDMI encoder's three channel 10-bit parallel
> > +  output and drives the HDMI pads.
> > +
> > +properties:
> > +  $nodename:
> > +    pattern: "^hdmi-phy@[0-9a-f]+$"
> > +
> > +  compatible:
> > +    enum:
> > +      - mediatek,mt2701-hdmi-phy
> > +      - mediatek,mt7623-hdmi-phy
> > +      - mediatek,mt8173-hdmi-phy
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  clocks:
> > +    items:
> > +      - description: PLL reference clock
> > +
> > +  clock-names:
> > +    items:
> > +      - const: pll_ref
> > +
> > +  clock-output-names:
> > +    items:
> > +      - const: hdmitx_dig_cts
> > +
> > +  "#phy-cells":
> > +    const: 0
> > +
> > +  "#clock-cells":
> > +    const: 0
> > +
> > +  mediatek,ibias:
> > +    description:
> > +      TX DRV bias current for < 1.65Gbps
> > +    $ref: /schemas/types.yaml#/definitions/uint32
> > +    minimum: 0
> > +    maximum: 63
> > +    default: 0xa
> > +
> > +  mediatek,ibias_up:
> > +    description:
> > +      TX DRV bias current for >= 1.65Gbps
> > +    $ref: /schemas/types.yaml#/definitions/uint32
> > +    minimum: 0
> > +    maximum: 63
> > +    default: 0x1c
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - clocks
> > +  - clock-names
> > +  - clock-output-names
> > +  - "#phy-cells"
> > +  - "#clock-cells"
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    #include <dt-bindings/clock/mt8173-clk.h>
> > +    hdmi_phy: hdmi-phy@...09100 {
> > +        compatible = "mediatek,mt8173-hdmi-phy";
> > +        reg = <0x10209100 0x24>;
> > +        clocks = <&apmixedsys CLK_APMIXED_HDMI_REF>;
> > +        clock-names = "pll_ref";
> > +        clock-output-names = "hdmitx_dig_cts";
> > +        mediatek,ibias = <0xa>;
> > +        mediatek,ibias_up = <0x1c>;
> > +        #clock-cells = <0>;
> > +        #phy-cells = <0>;
> > +    };
> > +
> > +...
> > --
> > 2.18.0
> >

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