linux-kernel - RE: [PATCH] arm64: dts: ls1012a: add USB host controller nodes

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Message-ID: <AM3PR04MB14896986FF8C5A18C2643C29F1AC0@AM3PR04MB1489.eurprd04.prod.outlook.com>
Date:   Thu, 13 Jul 2017 08:46:50 +0000
From:   Ran Wang <ran.wang_1@....com>
To:     Shawn Guo <shawnguo@...nel.org>
CC:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Andy Tang <andy.tang@....com>,
        Harninder Rai <harninder.rai@....com>,
        Horia Geantă <horia.geanta@....com>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        "moderated list:ARM64 PORT (AARCH64 ARCHITECTURE)" 
        <linux-arm-kernel@...ts.infradead.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] arm64: dts: ls1012a: add USB host controller nodes

> -----Original Message-----
> From: Shawn Guo [mailto:shawnguo@...nel.org]
> Sent: Thursday, July 13, 2017 4:07 PM
> To: Ran Wang <ran.wang_1@....com>
> Cc: Rob Herring <robh+dt@...nel.org>; Mark Rutland
> <mark.rutland@....com>; Catalin Marinas <catalin.marinas@....com>; Will
> Deacon <will.deacon@....com>; Andy Tang <andy.tang@....com>; Harninder
> Rai <harninder.rai@....com>; Horia Geantă <horia.geanta@....com>; open
> list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS
> <devicetree@...r.kernel.org>; moderated list:ARM64 PORT (AARCH64
> ARCHITECTURE) <linux-arm-kernel@...ts.infradead.org>; open list <linux-
> kernel@...r.kernel.org>
> Subject: Re: [PATCH] arm64: dts: ls1012a: add USB host controller nodes
> 
> On Wed, Jul 05, 2017 at 10:54:03AM +0800, Ran Wang wrote:
> > LS1012A has one USB 3.0(DWC3) controller and one USB 2.0 controller.
> >
> > Signed-off-by: Ran Wang <ran.wang_1@....com>
> > ---
> >  arch/arm64/boot/dts/freescale/fsl-ls1012a.dtsi | 17 +++++++++++++++++
> >  1 file changed, 17 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1012a.dtsi
> > b/arch/arm64/boot/dts/freescale/fsl-ls1012a.dtsi
> > index b497ac1..8aa2dcf 100644
> > --- a/arch/arm64/boot/dts/freescale/fsl-ls1012a.dtsi
> > +++ b/arch/arm64/boot/dts/freescale/fsl-ls1012a.dtsi
> > @@ -411,6 +411,23 @@
> >  				 <&clockgen 4 3>;
> >  		};
> >
> > +		usb0: usb3@...0000 {
> > +			compatible = "snps,dwc3";
> > +			reg = <0x0 0x2f00000 0x0 0x10000>;
> > +			interrupts = <0 60 0x4>;
> > +			dr_mode = "host";
> > +			snps,quirk-frame-length-adjustment = <0x20>;
> > +			snps,dis_rxdet_inp3_quirk;
> > +		};
> > +
> > +		usb1: usb2@...0000 {
> > +			compatible = "fsl-usb2-dr-v2.5", "fsl-usb2-dr";
> > +			reg = <0x0 0x8600000 0x0 0x1000>;
> > +			interrupts = <0 139 0x4>;
> > +			dr_mode = "host";
> > +			phy_type = "ulpi";
> > +		};
> 
> Please keep the nodes sorted in unit-address.
> 
> Shawn
Do you mean to move the node 'usb1: usb2@...0000' forward to where it's address is just before  '@...0000 '?
I think it's reasonable to put USB controller nodes together in DTS for developer to do issue analysis.

Ran
> 
> > +
> >  		sata: sata@...0000 {
> >  			compatible = "fsl,ls1012a-ahci", "fsl,ls1043a-ahci";
> >  			reg = <0x0 0x3200000 0x0 0x10000>,
> > --
> > 2.1.0.27.g96db324
> >