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1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)2%YAML 1.23---4$id: http://devicetree.org/schemas/iio/adc/xlnx,zynqmp-ams.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: Xilinx Zynq Ultrascale AMS controller8 9maintainers:10 - Anand Ashok Dumbre <anand.ashok.dumbre@xilinx.com>11 12description: |13 The AMS (Analog Monitoring System) includes an ADC as well as on-chip sensors14 that can be used to sample external voltages and monitor on-die operating15 conditions, such as temperature and supply voltage levels.16 The AMS has two SYSMON blocks which are PL (Programmable Logic) SYSMON and17 PS (Processing System) SYSMON.18 All designs should have AMS registers, but PS and PL are optional. The19 AMS controller can work with only PS, only PL and both PS and PL20 configurations. Please specify registers according to your design. Devicetree21 should always have AMS module property. Providing PS & PL module is optional.22 23 AMS Channel Details24 ```````````````````25 Sysmon Block |Channel| Details |Measurement26 |Number | |Type27 ---------------------------------------------------------------------------------------------------------28 AMS CTRL |0 |System PLLs voltage measurement, VCC_PSPLL. |Voltage29 |1 |Battery voltage measurement, VCC_PSBATT. |Voltage30 |2 |PL Internal voltage measurement, VCCINT. |Voltage31 |3 |Block RAM voltage measurement, VCCBRAM. |Voltage32 |4 |PL Aux voltage measurement, VCCAUX. |Voltage33 |5 |Voltage measurement for six DDR I/O PLLs, VCC_PSDDR_PLL. |Voltage34 |6 |VCC_PSINTFP_DDR voltage measurement. |Voltage35 ---------------------------------------------------------------------------------------------------------36 PS Sysmon |7 |LPD temperature measurement. |Temperature37 |8 |FPD temperature measurement (REMOTE). |Temperature38 |9 |VCC PS LPD voltage measurement (supply1). |Voltage39 |10 |VCC PS FPD voltage measurement (supply2). |Voltage40 |11 |PS Aux voltage reference (supply3). |Voltage41 |12 |DDR I/O VCC voltage measurement. |Voltage42 |13 |PS IO Bank 503 voltage measurement (supply5). |Voltage43 |14 |PS IO Bank 500 voltage measurement (supply6). |Voltage44 |15 |VCCO_PSIO1 voltage measurement. |Voltage45 |16 |VCCO_PSIO2 voltage measurement. |Voltage46 |17 |VCC_PS_GTR voltage measurement (VPS_MGTRAVCC). |Voltage47 |18 |VTT_PS_GTR voltage measurement (VPS_MGTRAVTT). |Voltage48 |19 |VCC_PSADC voltage measurement. |Voltage49 ---------------------------------------------------------------------------------------------------------50 PL Sysmon |20 |PL temperature measurement. |Temperature51 |21 |PL Internal voltage measurement, VCCINT. |Voltage52 |22 |PL Auxiliary voltage measurement, VCCAUX. |Voltage53 |23 |ADC Reference P+ voltage measurement. |Voltage54 |24 |ADC Reference N- voltage measurement. |Voltage55 |25 |PL Block RAM voltage measurement, VCCBRAM. |Voltage56 |26 |LPD Internal voltage measurement, VCC_PSINTLP (supply4). |Voltage57 |27 |FPD Internal voltage measurement, VCC_PSINTFP (supply5). |Voltage58 |28 |PS Auxiliary voltage measurement (supply6). |Voltage59 |29 |PL VCCADC voltage measurement (vccams). |Voltage60 |30 |Differential analog input signal voltage measurement. |Voltage61 |31 |VUser0 voltage measurement (supply7). |Voltage62 |32 |VUser1 voltage measurement (supply8). |Voltage63 |33 |VUser2 voltage measurement (supply9). |Voltage64 |34 |VUser3 voltage measurement (supply10). |Voltage65 |35 |Auxiliary ch 0 voltage measurement (VAux0). |Voltage66 |36 |Auxiliary ch 1 voltage measurement (VAux1). |Voltage67 |37 |Auxiliary ch 2 voltage measurement (VAux2). |Voltage68 |38 |Auxiliary ch 3 voltage measurement (VAux3). |Voltage69 |39 |Auxiliary ch 4 voltage measurement (VAux4). |Voltage70 |40 |Auxiliary ch 5 voltage measurement (VAux5). |Voltage71 |41 |Auxiliary ch 6 voltage measurement (VAux6). |Voltage72 |42 |Auxiliary ch 7 voltage measurement (VAux7). |Voltage73 |43 |Auxiliary ch 8 voltage measurement (VAux8). |Voltage74 |44 |Auxiliary ch 9 voltage measurement (VAux9). |Voltage75 |45 |Auxiliary ch 10 voltage measurement (VAux10). |Voltage76 |46 |Auxiliary ch 11 voltage measurement (VAux11). |Voltage77 |47 |Auxiliary ch 12 voltage measurement (VAux12). |Voltage78 |48 |Auxiliary ch 13 voltage measurement (VAux13). |Voltage79 |49 |Auxiliary ch 14 voltage measurement (VAux14). |Voltage80 |50 |Auxiliary ch 15 voltage measurement (VAux15). |Voltage81 --------------------------------------------------------------------------------------------------------82 83properties:84 compatible:85 enum:86 - xlnx,zynqmp-ams87 88 interrupts:89 maxItems: 190 91 reg:92 description: AMS Controller register space93 maxItems: 194 95 clocks:96 items:97 - description: AMS reference clock98 99 ranges:100 description:101 Maps the child address space for PS and/or PL.102 maxItems: 1103 104 '#address-cells':105 const: 1106 107 '#size-cells':108 const: 1109 110 '#io-channel-cells':111 const: 1112 113 ams-ps@0:114 type: object115 description: |116 PS (Processing System) SYSMON is memory mapped to PS. This block has117 built-in alarm generation logic that is used to interrupt the processor118 based on condition set.119 120 properties:121 compatible:122 enum:123 - xlnx,zynqmp-ams-ps124 125 reg:126 description: Register Space for PS-SYSMON127 maxItems: 1128 129 required:130 - compatible131 - reg132 133 additionalProperties: false134 135 ams-pl@400:136 type: object137 additionalProperties: false138 description:139 PL-SYSMON is capable of monitoring off chip voltage and temperature.140 PL-SYSMON block has DRP, JTAG and I2C interface to enable monitoring141 from external master. Out of this interface currently only DRP is142 supported. This block has alarm generation logic that is used to143 interrupt the processor based on condition set.144 145 properties:146 compatible:147 items:148 - enum:149 - xlnx,zynqmp-ams-pl150 151 reg:152 description: Register Space for PL-SYSMON.153 maxItems: 1154 155 '#address-cells':156 const: 1157 158 '#size-cells':159 const: 0160 161 patternProperties:162 "^channel@([2-4][0-9]|50)$":163 type: object164 description:165 Describes the external channels connected.166 167 properties:168 reg:169 description:170 Pair of pins the channel is connected to. This value is171 same as Channel Number for a particular channel.172 minimum: 20173 maximum: 50174 175 xlnx,bipolar:176 $ref: /schemas/types.yaml#/definitions/flag177 type: boolean178 description:179 If the set channel is used in bipolar mode.180 181 required:182 - reg183 184 additionalProperties: false185 186required:187 - compatible188 - reg189 - clocks190 - ranges191 192additionalProperties: false193 194examples:195 - |196 #include <dt-bindings/clock/xlnx-zynqmp-clk.h>197 198 bus {199 #address-cells = <2>;200 #size-cells = <2>;201 202 xilinx_ams: ams@ffa50000 {203 compatible = "xlnx,zynqmp-ams";204 interrupt-parent = <&gic>;205 interrupts = <0 56 4>;206 reg = <0x0 0xffa50000 0x0 0x800>;207 clocks = <&zynqmp_clk AMS_REF>;208 #address-cells = <1>;209 #size-cells = <1>;210 #io-channel-cells = <1>;211 ranges = <0 0 0xffa50800 0x800>;212 213 ams_ps: ams-ps@0 {214 compatible = "xlnx,zynqmp-ams-ps";215 reg = <0 0x400>;216 };217 218 ams_pl: ams-pl@400 {219 compatible = "xlnx,zynqmp-ams-pl";220 reg = <0x400 0x400>;221 #address-cells = <1>;222 #size-cells = <0>;223 channel@30 {224 reg = <30>;225 xlnx,bipolar;226 };227 channel@31 {228 reg = <31>;229 };230 channel@38 {231 reg = <38>;232 xlnx,bipolar;233 };234 };235 };236 };237