RE: [PATCH V6 03/12] phy: st-miphy40lp: Add binding information

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Hello Mark,

> -----Original Message-----
> From: Mark Rutland [mailto:mark.rutland@xxxxxxx]
> Sent: Wednesday, February 12, 2014 11:50 PM
> To: Mohit KUMAR DCG
> Cc: arnd@xxxxxxxx; Pratyush ANAND; Viresh Kumar; Kishon Vijay Abraham I;
> spear-devel; devicetree@xxxxxxxxxxxxxxx
> Subject: Re: [PATCH V6 03/12] phy: st-miphy40lp: Add binding information
> 
> On Tue, Feb 11, 2014 at 09:29:59AM +0000, Mohit Kumar wrote:
> > From: Pratyush Anand <pratyush.anand@xxxxxx>
> >
> > ST miphy40lp can be used with PCIe, SATA and Super Speed USB
> > controllers. SPEAr13XX SoCs use this phy for PCIe and SATA.
> >
> > Signed-off-by: Pratyush Anand <pratyush.anand@xxxxxx>
> > Cc: Mohit Kumar <mohit.kumar@xxxxxx>
> > Cc: Arnd Bergmann <arnd@xxxxxxxx>
> > Cc: Viresh Kumar <viresh.linux@xxxxxxxxx>
> > Cc: Kishon Vijay Abraham I <kishon@xxxxxx>
> > Cc: spear-devel@xxxxxxxxxxx
> > Cc: devicetree@xxxxxxxxxxxxxxx
> > ---
> >  .../devicetree/bindings/phy/st-miphy40lp.txt       |   18
> ++++++++++++++++++
> >  1 files changed, 18 insertions(+), 0 deletions(-)  create mode 100644
> > Documentation/devicetree/bindings/phy/st-miphy40lp.txt
> >
> > diff --git a/Documentation/devicetree/bindings/phy/st-miphy40lp.txt
> > b/Documentation/devicetree/bindings/phy/st-miphy40lp.txt
> > new file mode 100644
> > index 0000000..1c8d04c
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/phy/st-miphy40lp.txt
> > @@ -0,0 +1,18 @@
> > +ST miphy40lp DT detail
> > +===================================
> > +
> > +miphy40lp is a phy controller from ST Microelectronics which supports
> > +PCIe, SATA and Super Speed USB host and devices. It has been used in
> SPEAr13xx SOCs.
> > +
> > +Required properties:
> > +- compatible : should be "st,miphy40lp-phy"
> > +	Other supported soc specific compatible:
> > +		"st,spear1310-miphy"
> > +		"st,spear1340-miphy"
> > +- reg : offset and length of the PHY register set.
> > +- misc: phandle for the syscon node to access misc registers
> 
> This is very vague. What is this used for?

- These are Spear SoC specific miscellaneous registers. Here these are used for
to configure sata/pcie  aux clock.
> 
> > +- phy-id: Instance id of the phy.
> > +- #phy-cells : from the generic PHY bindings, must be 1.
> > +	- 1st cell: phandle to the phy node.
> > +	- 2nd cell: 0 if phy (in 1st cell) is to be used for SATA, 1 for PCIe
> > +	  and 2 for Super Speed USB.
> 
> One cell or two?

- No of cells are two, is this the question?

Thanks
Mohit
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