netdev - Re: [PATCH 1/2] dt-binding: mediatek: Add binding document for MediaTek GMAC

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Date:   Tue, 18 Sep 2018 09:14:19 +0800
From:   biao huang <biao.huang@...iatek.com>
To:     Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
CC:     <davem@...emloft.net>, <robh+dt@...nel.org>,
        <honghui.zhang@...iatek.com>, <yt.shen@...iatek.com>,
        <liguo.zhang@...iatek.com>, <mark.rutland@....com>,
        <sean.wang@...iatek.com>, <nelson.chang@...iatek.com>,
        <matthias.bgg@...il.com>, <netdev@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>
Subject: Re: [PATCH 1/2] dt-binding: mediatek: Add binding document for
 MediaTek GMAC

On Mon, 2018-09-17 at 11:33 +0300, Sergei Shtylyov wrote:
> On 9/17/2018 9:29 AM, Biao Huang wrote:
> 
> > The commit adds the device tree binding documentation for the MediaTek
> > GMAC found on Mediatek MT2712.
> > 
> > Signed-off-by: Biao Huang <biao.huang@...iatek.com>
> > ---
> >   .../devicetree/bindings/net/mediatek-gmac.txt      |   45 ++++++++++++++++++++
> >   1 file changed, 45 insertions(+)
> >   create mode 100644 Documentation/devicetree/bindings/net/mediatek-gmac.txt
> > 
> > diff --git a/Documentation/devicetree/bindings/net/mediatek-gmac.txt b/Documentation/devicetree/bindings/net/mediatek-gmac.txt
> > new file mode 100644
> > index 0000000..14876ed
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/net/mediatek-gmac.txt
> > @@ -0,0 +1,45 @@
> > +MediaTek Gigabit Ethernet controller
> > +=========================================
> > +
> > +The gigabit ethernet controller can be found on MediaTek SoCs.
> > +
> > +* Ethernet controller node
> > +
> > +Required properties:
> > +- compatible: Should be
> > +	"mediatek,mt2712-eth": for MT2712 SoC
> > +- reg: Address and length of the register set for the device
> > +- interrupts: Should contain the MAC interrupts
> > +- interrupt-names: the name of interrupt in the interrupts property. These are
> > +	"macirq": For MT2712 SoC
> > +- clocks: the clock used by the controller
> > +- clock-names: the names of the clock listed in the clocks property. These are
> > +	"axi", "apb", "mac_ext", "ptp", "ptp_parent", "ptp_top": For MT2712 SoC
> > +- mac-address: See ethernet.txt in the same directory
> > +- power-domains: phandle to the power domain that the ethernet is part of
> 
>     This (required) prop is absent in your example.
thanks for your comments, power-domains is not a required property, and
I'll modify this property in next version.
> 
> > +- phy-mode: See ethernet.txt file in the same directory.
> > +- reset-gpio: gpio number for phy reset.
> > +
> > +Example:
> > +
> > +eth: eth@...1c000 {
> 
> eth: ethernet@...1c000 {
> 
> > +		compatible = "mediatek,mt2712-eth";
> > +		reg = <0 0x1101c000 0 0x1200>;
> > +		interrupts = <GIC_SPI 237 IRQ_TYPE_LEVEL_LOW>;
> > +		interrupt-names = "macirq";
> > +		phy-mode ="rgmii";
> > +		mac-address = [00 55 7b b5 7d f7];
> > +		clock-names = "axi",
> > +			      "apb",
> > +			      "mac_ext",
> > +			      "ptp",
> > +			      "ptp_parent",
> > +			      "ptp_top";
> > +		clocks = <&pericfg CLK_PERI_GMAC>,
> > +			 <&pericfg CLK_PERI_GMAC_PCLK>,
> > +			 <&topckgen CLK_TOP_ETHER_125M_SEL>,
> > +			 <&topckgen CLK_TOP_ETHER_50M_SEL>,
> > +			 <&topckgen CLK_TOP_APLL1_D3>,
> > +			 <&topckgen CLK_TOP_APLL1>;
> > +		reset-gpio = <&pio 87 GPIO_ACTIVE_HIGH>;
> > +	};
> 
> MBR, Sergei
Best Regards!
Biao