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: Anand Ashok Dumbre <anand.ashok.dumbre@xxxxxxxxxx> Reviewed-by: Rob Herring <robh@xxxxxxxxxx> --- .../bindings/iio/adc/xlnx,zynqmp-ams.yaml | 227 ++++++++++++++++++ 1 file changed, 227 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/adc/xlnx,zynqmp-ams.yaml diff --git a/Documentation/devicetree/bindings/iio/adc/xlnx,zynqmp-ams.yaml b/Documentation/devicetree/bindings/iio/adc/xlnx,zynqmp-ams.yaml new file mode 100644 index 000000000000..87992db389b2 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/xlnx,zynqmp-ams.yaml @@ -0,0 +1,227 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/adc/xlnx,zynqmp-ams.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Xilinx Zynq Ultrascale AMS controller + +maintainers: + - Anand Ashok Dumbre <anand.ashok.dumbre@xxxxxxxxxx> + +description: | + The AMS (Analog Monitoring System) includes an ADC as well as on-chip sensors + that can be used to sample external voltages and monitor on-die operating + conditions, such as temperature and supply voltage levels. + The AMS has two SYSMON blocks which are PL (Programmable Logic) SYSMON and + PS (Processing System) SYSMON. + All designs should have AMS registers, but PS and PL are optional. The + AMS controller can work with only PS, only PL and both PS and PL + configurations. Please specify registers according to your design. Devicetree + should always have AMS module property. Providing PS & PL module is optional. + + AMS Channel 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 measurement (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 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 |Differential 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 + -------------------------------------------------------------------------------------------------------- + +properties: + compatible: + enum: + - xlnx,zynqmp-ams + + interrupts: + maxItems: 1 + + reg: + description: AMS Controller register space + maxItems: 1 + + ranges: + description: + Maps the child address space for PS and/or PL. + maxItems: 1 + + '#address-cells': + const: 1 + + '#size-cells': + const: 1 + + '#io-channel-cells': + const: 1 + + ams-ps@0: + type: object + description: | + PS (Processing System) SYSMON is memory mapped to PS. This block has + built-in alarm generation logic that is used to interrupt the processor + based on condition set. + + properties: + compatible: + enum: + - xlnx,zynqmp-ams-ps + + reg: + description: Register Space for PS-SYSMON + maxItems: 1 + + required: + - compatible + - reg + + additionalProperties: false + + ams-pl@400: + type: object + description: + PL-SYSMON is capable of monitoring off chip voltage and temperature. + PL-SYSMON block has DRP, JTAG and I2C interface to enable monitoring + from external master. Out of this interface currently only DRP is + supported. This block has alarm generation logic that is used to + interrupt the processor based on condition set. + + properties: + compatible: + items: + - enum: + - xlnx,zynqmp-ams-pl + + reg: + description: Register Space for PL-SYSMON. + maxItems: 1 + + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + + patternProperties: + "^channel@([2-4][0-9]|50)$": + type: object + description: + Describes the external channels connected. + + properties: + reg: + description: + Pair of pins the channel is connected to. This value is + same as Channel Number for a particular channel. + minimum: 20 + maximum: 50 + + xlnx,bipolar: + $ref: /schemas/types.yaml#/definitions/flag + type: boolean + description: + If the set channel is used in bipolar mode. + + required: + - reg + + additionalProperties: false + +required: + - compatible + - reg + - ranges + +additionalProperties: false + +examples: + - | + bus { + #address-cells = <2>; + #size-cells = <2>; + + xilinx_ams: ams@ffa50000 { + compatible = "xlnx,zynqmp-ams"; + interrupt-parent = <&gic>; + interrupts = <0 56 4>; + reg = <0x0 0xffa50000 0x0 0x800>; + #address-cells = <1>; + #size-cells = <1>; + #io-channel-cells = <1>; + ranges = <0 0 0xffa50800 0x800>; + + ams_ps: ams-ps@0 { + compatible = "xlnx,zynqmp-ams-ps"; + reg = <0 0x400>; + }; + + ams_pl: ams-pl@400 { + compatible = "xlnx,zynqmp-ams-pl"; + reg = <0x400 0x400>; + #address-cells = <1>; + #size-cells = <0>; + channel@30 { + reg = <30>; + xlnx,bipolar; + }; + channel@31 { + reg = <31>; + }; + channel@38 { + reg = <38>; + xlnx,bipolar; + }; + }; + }; + }; -- 2.17.1
