Ping.
Best Regards,
Shaohui Xie
> -----Original Message-----
> From: Xie Shaohui-B21989
> Sent: Wednesday, November 26, 2014 10:11 AM
> To: Wood Scott-B07421
> Cc: linuxppc-dev@xxxxxxxxxxxxxxxx; devicetree@xxxxxxxxxxxxxxx; Medve Emilian-
> EMMEDVE1; Liberman Igal-B31950
> Subject: RE: [PATCH] [v2] power/fsl: add MDIO dt binding for FMan
>
> > -----Original Message-----
> > From: Wood Scott-B07421
> > Sent: Wednesday, November 26, 2014 9:50 AM
> > To: shh.xie@xxxxxxxxx
> > Cc: linuxppc-dev@xxxxxxxxxxxxxxxx; devicetree@xxxxxxxxxxxxxxx; Medve
> > Emilian-EMMEDVE1; Liberman Igal-B31950; Xie Shaohui-B21989
> > Subject: Re: [PATCH] [v2] power/fsl: add MDIO dt binding for FMan
> >
> > On Fri, 2014-11-14 at 17:53 +0800, shh.xie@xxxxxxxxx wrote:
> > > From: Shaohui Xie <Shaohui.Xie@xxxxxxxxxxxxx>
> > >
> > > This binding is for FMan MDIO, it covers FMan v2 & FMan v3.
> > >
> > > Signed-off-by: Shaohui Xie <Shaohui.Xie@xxxxxxxxxxxxx>
> > > ---
> > > changes in V2:
> > > addressed comments from Scott in V1.
> > >
> > > .../devicetree/bindings/powerpc/fsl/fman.txt | 69
> > ++++++++++++++++++++++
> > > 1 file changed, 69 insertions(+)
> > >
> > > diff --git a/Documentation/devicetree/bindings/powerpc/fsl/fman.txt
> > > b/Documentation/devicetree/bindings/powerpc/fsl/fman.txt
> > > index edeea16..1523a87 100644
> > > --- a/Documentation/devicetree/bindings/powerpc/fsl/fman.txt
> > > +++ b/Documentation/devicetree/bindings/powerpc/fsl/fman.txt
> > > @@ -7,6 +7,7 @@ CONTENTS
> > > - FMan MURAM Node
> > > - FMan dTSEC/XGEC/mEMAC Node
> > > - FMan IEEE 1588 Node
> > > + - FMan MDIO Node
> > > - Example
> > >
> > >
> > > ====================================================================
> > > == ======= @@ -357,6 +358,68 @@ ptp-timer@fe000 { };
> > >
> > >
> > > ====================================================================
> > > ==
> > > =======
> > > +FMan MDIO Node
> > > +
> > > +DESCRIPTION
> > > +
> > > +The MDIO is a bus to which the PHY devices are connected.
> > > +
> > > +PROPERTIES
> > > +
> > > +- compatible
> > > + Usage: required
> > > + Value type: <stringlist>
> > > + Definition: A standard property.
> > > + Must include "fsl,fman-mdio" for 1 Gb/s MDIO from FMan v2.
> > > + Must include "fsl,fman-xmdio" for 10 Gb/s MDIO from FMan v2.
> > > + Must include "fsl,fman-memac-mdio" for 1/10 Gb/s MDIO from
> > > + FMan v3.
> > > +
> > > +- reg
> > > + Usage: required
> > > + Value type: <prop-encoded-array>
> > > + Definition: A standard property.
> > > +
> > > +- bus-frequency
> > > + Usage: optional
> > > + Value type: <u32>
> > > + Definition: Specifies external MDIO bus clock speed which is
> > > + different from MDIO standard 2.5MHz. Should be defined for
> > SoCs
> > > + on which the standard one cannot work.
> > > +
> > > +- interrupts
> > > + Usage: optional
> > > + Value type: <prop-encoded-array>
> > > + Definition: Event interrupt of external MDIO controller.
> > > + 1 Gb/s MDIO and 10 Gb/s MDIO has one interrupt respectively.
> > > +
> > > +- fsl,fman-internal-mdio
> > > + Usage: required for internal MDIO
> > > + Value type: boolean
> > > + Definition: Fman has internal MDIO for internal PCS(Physical
> > > + Coding Sublayer) PHYs and external MDIO for external PHYs.
> > > + The settings and programming routines for internal/external
> > > + MDIO are different. Must be included for internal MDIO.
> > > +
> > > +EXAMPLE
> > > +
> > > +Example for FMan v2 external MDIO:
> > > +
> > > +mdio@f1000 {
> > > + compatible = "fsl,fman-xmdio";
> > > + reg = <0xf1000 0x1000>;
> > > + bus-frequency = <20000>;
> > > +};
> >
> > So the bus frequency is only 20 KHz? Or is the unit supposed to be
> > something other than Hz?
> [S.H] it's only an example, it could be different on real SoCs, but they always
> lower than the standard one, The standard one is 2.5MHz, I have to use Hz for it.
>
> Thanks!
> Shaohui
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