> -----Original Message----- > From: Kumar Gala [mailto:ga...@kernel.crashing.org] > Sent: Wednesday, March 21, 2012 11:37 PM > To: Aggrwal Poonam-B10812 > Cc: devicetree-disc...@lists.ozlabs.org; linuxppc-dev@lists.ozlabs.org; > Singh Sandeep-B37400 > Subject: Re: [PATCH][v2] Device Tree Bindings for Freescale TDM > controller > > > On Mar 19, 2012, at 8:02 PM, Poonam Aggrwal wrote: > > > This TDM controller is available in various Freescale SOCs like > > MPC8315, P1020, P1022, P1010. > > > > Signed-off-by: Sandeep Singh <sand...@freescale.com> > > Signed-off-by: Poonam Aggrwal <poonam.aggr...@freescale.com> > > --- > > Changes in v2: > > - Incorporated Scott's Review comments > > Documentation/devicetree/bindings/tdm/fsl-tdm.txt | 67 > +++++++++++++++++++++ > > 1 files changed, 67 insertions(+), 0 deletions(-) create mode 100644 > > Documentation/devicetree/bindings/tdm/fsl-tdm.txt > > > > diff --git a/Documentation/devicetree/bindings/tdm/fsl-tdm.txt > > b/Documentation/devicetree/bindings/tdm/fsl-tdm.txt > > new file mode 100644 > > index 0000000..6553dbe > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/tdm/fsl-tdm.txt > > @@ -0,0 +1,67 @@ > > +===================================================================== > > +TDM Device Tree Binding > > +Copyright (C) 2012 Freescale Semiconductor Inc. > > + > > +NOTE: The bindings described in this document are preliminary and > > +subject to change. > > + > > +===================================================================== > > +TDM (Time Division Multiplexing) > > + > > +DESCRIPTION > > + > > +The TDM is full duplex serial port designed to allow various devices > > +including digital signal processors (DSPs) to communicate with a > > +variety of serial devices including industry standard framers, codecs, > other DSPs and microprocessors. > > + > > +The below properties describe the device tree bindings for Freescale > > +TDM controller. > > +This TDM controller is available on various Freescale Processors like > > +MPC8315, P1020, P1022 and P1010. > > + > > +PROPERTIES > > + > > + - compatible > > + Usage: required > > + Value type: <string> > > + Definition: Should contain "fsl,mpc8315-tdm". > > + So mpc8315 will have compatible = "fsl,mpc8315-tdm"; > > + p1010 will have compatible "fsl,p1010-tdm", "fsl,mpc8315-tdm"; > > + > > + - reg > > + Usage: required > > + Definition: There are two reg resources. First is for TDM > registers and > > + the second for TDM DMAC registers. > > + > > + - clock-frequency > > + Usage: optional > > + Value type: <u32> > > + Definition: The frequency at which the TDM block is operating. > > + > > + - interrupts > > + Usage: required > > + Definition: This field defines the interrupt specifiers for the > two > > + interrupts. First is for TDM error and second for TDM DMAC. > > + > > + - phy-handle > > + Usage: optional > > + Value type: <phandle> > > + Definition: Phandle of the line controller node or framer node > eg. SLIC, > > + E1/T1 etc. > > Which way are we going with the name of such handle properties? Ie > should this be 'tdm-phy-handle' or keeping it generic is ok? > tdm-phy-handle looks better, but generally all the devices mention just phy-handle (usb, tsec) > > + > > + - fsl,max-time-slots > > + Usage: required > > + Value type: <u32> > > + Definition: Maximum number of 8-bit time slots in one TDM frame. > > + This is the maximum number which TDM hardware supports. > > + > > +EXAMPLE > > + > > + tdm@16000 { > > + compatible = "fsl,p1010-tdm", "fsl,mpc8315-tdm"; > > + reg = <0x16000 0x200 0x2c000 0x2000>; > > + clock-frequency = <399999999>; /* typically filled by u-boot > */ > > + interrupts = <16 8 62 8>; > > + phy-handle = <&zarlink1>; > > + fsl-max-time-slots = <128>; > > + }; > > -- > > 1.6.5.6 > > > > > > _______________________________________________ > > Linuxppc-dev mailing list > > Linuxppc-dev@lists.ozlabs.org > > https://lists.ozlabs.org/listinfo/linuxppc-dev >
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