linux-kernel - Re: [PATCH v10 3/3] arm64: dts: mediatek: add xHCI & usb phy for mt8173

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Date:	Mon, 19 Oct 2015 13:31:27 +0800
From:	chunfeng yun <chunfeng.yun@...iatek.com>
To:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
CC:	Mathias Nyman <mathias.nyman@...el.com>,
	Rob Herring <robh+dt@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	"Matthias Brugger" <matthias.bgg@...il.com>,
	Felipe Balbi <balbi@...com>,
	"Sascha Hauer" <s.hauer@...gutronix.de>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	"Roger Quadros" <rogerq@...com>, <linux-usb@...r.kernel.org>,
	<linux-mediatek@...ts.infradead.org>,
	John Crispin <blogic@...nwrt.org>,
	Daniel Kurtz <djkurtz@...omium.org>,
	Kishon Vijay Abraham I <kishon@...com>,
	Pawel Moll <pawel.moll@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	"Greg Kroah-Hartman" <gregkh@...uxfoundation.org>
Subject: Re: [PATCH v10 3/3] arm64: dts: mediatek: add xHCI & usb phy for
 mt8173

On Sun, 2015-10-18 at 14:01 +0300, Sergei Shtylyov wrote:
> Hello.
> 
> On 10/18/2015 6:51 AM, Chunfeng Yun wrote:
> 
> > add xHCI and phy drivers for MT8173-EVB
> >
> > Signed-off-by: Chunfeng Yun <chunfeng.yun@...iatek.com>
> 
> [...]
> 
> > diff --git a/arch/arm64/boot/dts/mediatek/mt8173.dtsi b/arch/arm64/boot/dts/mediatek/mt8173.dtsi
> > index d18ee42..46f5f50 100644
> > --- a/arch/arm64/boot/dts/mediatek/mt8173.dtsi
> > +++ b/arch/arm64/boot/dts/mediatek/mt8173.dtsi
> [...]
> > @@ -487,6 +488,47 @@
> >   			clock-names = "source", "hclk";
> >   			status = "disabled";
> >   		};
> > +
> > +		usb30: usb@...70000 {
> > +			compatible = "mediatek,mt8173-xhci";
> > +			reg = <0 0x11270000 0 0x1000>,
> > +			      <0 0x11280700 0 0x0100>;
> > +			interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_LOW>;
> > +			power-domains = <&scpsys MT8173_POWER_DOMAIN_USB>;
> > +			clocks = <&topckgen CLK_TOP_USB30_SEL>,
> > +				 <&pericfg CLK_PERI_USB0>,
> > +				 <&pericfg CLK_PERI_USB1>;
> > +			clock-names = "sys_ck",
> > +				      "wakeup_deb_p0",
> > +				      "wakeup_deb_p1";
> > +			phys = <&phy_port0 PHY_TYPE_USB3>,
> > +			       <&phy_port1 PHY_TYPE_USB2>;
> > +			mediatek,syscon-wakeup = <&pericfg>;
> > +			status = "okay";
> > +		};
> > +
> > +		u3phy: usb-phy@...90000 {
> > +			compatible = "mediatek,mt8173-u3phy";
> > +			reg = <0 0x11290000 0 0x800>;
> > +			clocks = <&apmixedsys CLK_APMIXED_REF2USB_TX>;
> > +			clock-names = "u3phya_ref";
> > +			#address-cells = <2>;
> > +			#size-cells = <2>;
> > +			ranges;
> > +			status = "okay";
> 
>     Don't you need the "power-domains" prop here as well?
No, the power-domains of MAC and PHY are separated, but PHY's can't be
operated by software.

Thanks.
> 
> > +
> > +			phy_port0: port@...90800 {
> > +				reg = <0 0x11290800 0 0x800>;
> > +				#phy-cells = <1>;
> > +				status = "okay";
> > +			};
> > +
> > +			phy_port1: port@...91000 {
> > +				reg = <0 0x11291000 0 0x800>;
> > +				#phy-cells = <1>;
> > +				status = "okay";
> > +			};
> > +		};
> >   	};
> >   };
> >
> 
> MBR, Sergei
> 


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