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Date: Thu, 6 Sep 2018 13:42:30 +0000
From: Manish Narani <MNARANI@...inx.com>
To: Rob Herring <robh@...nel.org>
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Subject: RE: [PATCH 1/3] dt-bindings: iio: adc: Add Xilinx AMS binding
documentation
Hi Rob,
Thanks for the review. Please see my comments inline.
> From: Rob Herring [mailto:robh@...nel.org]
> Sent: Tuesday, September 4, 2018 6:48 AM
> To: Manish Narani <MNARANI@...inx.com>
>
> On Thu, Aug 30, 2018 at 03:52:17PM +0530, Manish Narani wrote:
> > Xilinx AMS have several ADC channels that can be used for measurement
> > of different voltages and temperatures. Document the same in the bindings.
> >
> > Signed-off-by: Manish Narani <manish.narani@...inx.com>
> > ---
> > .../devicetree/bindings/iio/adc/xilinx-ams.txt | 159
> +++++++++++++++++++++
> > 1 file changed, 159 insertions(+)
> > create mode 100644
> > Documentation/devicetree/bindings/iio/adc/xilinx-ams.txt
> >
> > diff --git a/Documentation/devicetree/bindings/iio/adc/xilinx-ams.txt
> > b/Documentation/devicetree/bindings/iio/adc/xilinx-ams.txt
> > new file mode 100644
> > index 0000000..8cc96f0
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/iio/adc/xilinx-ams.txt
> > +AMS device tree subnode:
> > + - compatible: Should be "xlnx,zynqmp-ams-ps" or "xlnx,zynqmp-ams-pl"
> > + - reg: Register space for PS or PL
>
> Please split each child node into its own section.
Okay. I will update this in v2.
>
> > +
> > +Optional properties:
> > +
> > +Following optional property only valid for PL.
>
> property or...
It should be node. I will update this in v2.
>
> > + - xlnx,ext-channels: List of external channels that are connected to the
> > + AMS PL module.
> > +
> > + The child nodes of this node represent the external channels which
> > +are
>
> node?
>
> > + connected to the AMS Module. If the property is not present
> > + no external channels will be assumed to be connected.
> > +
> > + Each child node represents one channel and has the following
> > + properties:
> > + Required properties:
> > + * reg: Pair of pins the channel is connected to.
> > + 0: VP/VN
> > + 1: VUSER0
> > + 2: VUSER1
> > + 3: VUSER3
> > + 4: VUSER4
> > + 5: VAUXP[0]/VAUXN[0]
> > + 6: VAUXP[1]/VAUXN[1]
> > + ...
> > + 20: VAUXP[15]/VAUXN[15]
> > + Note each channel number should only be used at
> most
> > + once.
> > + Optional properties:
> > + * xlnx,bipolar: If set the channel is used in bipolar
> > + mode.
> > +
> > +
> > +Example:
> > + xilinx_ams: ams@...50000 {
> > + compatible = "xlnx,zynqmp-ams";
> > + interrupt-parent = <&gic>;
> > + interrupts = <0 56 4>;
> > + interrupt-names = "ams-irq";
> > + clocks = <&clkc 70>;
> > + reg = <0x0 0xffa50000 0x0 0x800>;
> > + reg-names = "ams-base";
> > + #address-cells = <2>;
> > + #size-cells = <2>;
> > + ranges;
>
> There's no need for 64-bits of addresses and sizes here. Use ranges.
Okay.
> > +
> > + ams_ps: ams_ps@...50800 {
> > + compatible = "xlnx,zynqmp-ams-ps";
> > + reg = <0x0 0xffa50800 0x0 0x400>;
> > + };
> > +
> > + ams_pl: ams_pl@...50c00 {
> > + compatible = "xlnx,zynqmp-ams-pl";
> > + reg = <0x0 0xffa50c00 0x0 0x400>;
> > + xlnx,ext-channels {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + channel@0 {
> > + reg = <0>;
> > + xlnx,bipolar;
> > + };
> > + channel@1 {
> > + reg = <1>;
> > + };
> > + channel@8 {
> > + reg = <8>;
> > + xlnx,bipolar;
> > + };
> > + };
> > + };
> > + };
> > +
> > +AMS Channels Details:
> > +
> > +Sysmon Block |Channel| Details
> |Measurement
> > + Number
> Type
> > +---------------------------------------------------------------------------------------------------
> ------
> > +AMS CTRL |0 |System PLLs voltage measurement, VCC_PSPLL.
> |Voltage
> > + |1 |Battery voltage measurement, VCC_PSBATT.
> |Voltage
> > + |2 |PL Internal voltage measurement, VCCINT.
> |Voltage
> > + |3 |Block RAM voltage measurement, VCCBRAM.
> |Voltage
> > + |4 |PL Aux voltage measurement, VCCAUX.
> |Voltage
> > + |5 |Voltage measurement for six DDR I/O PLLs,
> VCC_PSDDR_PLL. |Voltage
> > + |6 |VCC_PSINTFP_DDR voltage measurement.
> |Voltage
> > +---------------------------------------------------------------------------------------------------
> ------
> > +PS Sysmon |7 |LPD temperature measurement.
> |Temperature
> > + |8 |FPD Temperature Measurment (REMOTE).
> |Temperature
> > + |9 |VCC PS LPD voltage measurement (supply1).
> |Voltage
> > + |10 |VCC PS FPD voltage measurement (supply2).
> |Voltage
> > + |11 |PS Aux voltage reference (supply3).
> |Voltage
> > + |12 |DDR I/O VCC voltage measurement.
> |Voltage
> > + |13 |PS IO Bank 503 voltage measurement (supply5).
> |Voltage
> > + |14 |PS IO Bank 500 voltage measurement (supply6).
> |Voltage
> > + |15 |VCCO_PSIO1 voltage measurement.
> |Voltage
> > + |16 |VCCO_PSIO2 voltage measurement.
> |Voltage
> > + |17 |VCC_PS_GTR voltage measurement
> (VPS_MGTRAVCC). |Voltage
> > + |18 |VTT_PS_GTR voltage measurement
> (VPS_MGTRAVTT). |Voltage
> > + |19 |VCC_PSADC voltage measurement.
> |Voltage
> > +---------------------------------------------------------------------------------------------------
> ------
> > +PL Sysmon |20 |PL Temperature measurement.
> |Temperature
> > + |21 |PL Internal Voltage Voltage measurement, VCCINT.
> |Voltage
> > + |22 |PL Auxiliary Voltage measurement, VCCAUX.
> |Voltage
> > + |23 |ADC Reference P+ Voltage measurement.
> |Voltage
> > + |24 |ADC Reference N- Voltage measurement.
> |Voltage
> > + |25 |PL Block RAM Voltage measurement, VCCBRAM.
> |Voltage
> > + |26 |LPD Internal Voltage measurement, VCC_PSINTLP
> (supply4). |Voltage
> > + |27 |FPD Internal Voltage measurement, VCC_PSINTFP
> (supply5). |Voltage
> > + |28 |PS Auxiliary Voltage measurement (supply6).
> |Voltage
> > + |29 |PL VCCADC Voltage measurement (vccams).
> |Voltage
> > + |30 |Differencial analog input signal Voltage measurment.
> |Voltage
> > + |31 |VUser0 Voltage measurement (supply7).
> |Voltage
> > + |32 |VUser1 Voltage measurement (supply8).
> |Voltage
> > + |33 |VUser2 Voltage measurement (supply9).
> |Voltage
> > + |34 |VUser3 Voltage measurement (supply10).
> |Voltage
> > + |35 |Auxiliary ch 0 Voltage measurement (VAux0).
> |Voltage
> > + |36 |Auxiliary ch 1 Voltage measurement (VAux1).
> |Voltage
> > + |37 |Auxiliary ch 2 Voltage measurement (VAux2).
> |Voltage
> > + |38 |Auxiliary ch 3 Voltage measurement (VAux3).
> |Voltage
> > + |39 |Auxiliary ch 4 Voltage measurement (VAux4).
> |Voltage
> > + |40 |Auxiliary ch 5 Voltage measurement (VAux5).
> |Voltage
> > + |41 |Auxiliary ch 6 Voltage measurement (VAux6).
> |Voltage
> > + |42 |Auxiliary ch 7 Voltage measurement (VAux7).
> |Voltage
> > + |43 |Auxiliary ch 8 Voltage measurement (VAux8).
> |Voltage
> > + |44 |Auxiliary ch 9 Voltage measurement (VAux9).
> |Voltage
> > + |45 |Auxiliary ch 10 Voltage measurement (VAux10).
> |Voltage
> > + |46 |Auxiliary ch 11 Voltage measurement (VAux11).
> |Voltage
> > + |47 |Auxiliary ch 12 Voltage measurement (VAux12).
> |Voltage
> > + |48 |Auxiliary ch 13 Voltage measurement (VAux13).
> |Voltage
> > + |49 |Auxiliary ch 14 Voltage measurement (VAux14).
> |Voltage
> > + |50 |Auxiliary ch 15 Voltage measurement (VAux15).
> |Voltage
> > +---------------------------------------------------------------------
> > +------------------------------------
> > --
> > 2.1.1
> >
Thanks,
Manish Narani
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