1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/iio/adc/xlnx,zynqmp-ams.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Xilinx Zynq Ultrascale AMS controller
8
9 maintainers:
10 - Anand Ashok Dumbre <anand.ashok.dumbre@xilinx.com>
11
12 description: |
13 The AMS (Analog Monitoring System) includes an ADC as well as on-chip sensors
14 that can be used to sample external voltages and monitor on-die operating
15 conditions, such as temperature and supply voltage levels.
16 The AMS has two SYSMON blocks which are PL (Programmable Logic) SYSMON and
17 PS (Processing System) SYSMON.
18 All designs should have AMS registers, but PS and PL are optional. The
19 AMS controller can work with only PS, only PL and both PS and PL
20 configurations. Please specify registers according to your design. Devicetree
21 should always have AMS module property. Providing PS & PL module is optional.
22
23 AMS Channel Details
24 ```````````````````
25 Sysmon Block |Channel| Details |Measurement
26 |Number | |Type
27 ---------------------------------------------------------------------------------------------------------
28 AMS CTRL |0 |System PLLs voltage measurement, VCC_PSPLL. |Voltage
29 |1 |Battery voltage measurement, VCC_PSBATT. |Voltage
30 |2 |PL Internal voltage measurement, VCCINT. |Voltage
31 |3 |Block RAM voltage measurement, VCCBRAM. |Voltage
32 |4 |PL Aux voltage measurement, VCCAUX. |Voltage
33 |5 |Voltage measurement for six DDR I/O PLLs, VCC_PSDDR_PLL. |Voltage
34 |6 |VCC_PSINTFP_DDR voltage measurement. |Voltage
35 ---------------------------------------------------------------------------------------------------------
36 PS Sysmon |7 |LPD temperature measurement. |Temperature
37 |8 |FPD temperature measurement (REMOTE). |Temperature
38 |9 |VCC PS LPD voltage measurement (supply1). |Voltage
39 |10 |VCC PS FPD voltage measurement (supply2). |Voltage
40 |11 |PS Aux voltage reference (supply3). |Voltage
41 |12 |DDR I/O VCC voltage measurement. |Voltage
42 |13 |PS IO Bank 503 voltage measurement (supply5). |Voltage
43 |14 |PS IO Bank 500 voltage measurement (supply6). |Voltage
44 |15 |VCCO_PSIO1 voltage measurement. |Voltage
45 |16 |VCCO_PSIO2 voltage measurement. |Voltage
46 |17 |VCC_PS_GTR voltage measurement (VPS_MGTRAVCC). |Voltage
47 |18 |VTT_PS_GTR voltage measurement (VPS_MGTRAVTT). |Voltage
48 |19 |VCC_PSADC voltage measurement. |Voltage
49 ---------------------------------------------------------------------------------------------------------
50 PL Sysmon |20 |PL temperature measurement. |Temperature
51 |21 |PL Internal voltage measurement, VCCINT. |Voltage
52 |22 |PL Auxiliary voltage measurement, VCCAUX. |Voltage
53 |23 |ADC Reference P+ voltage measurement. |Voltage
54 |24 |ADC Reference N- voltage measurement. |Voltage
55 |25 |PL Block RAM voltage measurement, VCCBRAM. |Voltage
56 |26 |LPD Internal voltage measurement, VCC_PSINTLP (supply4). |Voltage
57 |27 |FPD Internal voltage measurement, VCC_PSINTFP (supply5). |Voltage
58 |28 |PS Auxiliary voltage measurement (supply6). |Voltage
59 |29 |PL VCCADC voltage measurement (vccams). |Voltage
60 |30 |Differential analog input signal voltage measurement. |Voltage
61 |31 |VUser0 voltage measurement (supply7). |Voltage
62 |32 |VUser1 voltage measurement (supply8). |Voltage
63 |33 |VUser2 voltage measurement (supply9). |Voltage
64 |34 |VUser3 voltage measurement (supply10). |Voltage
65 |35 |Auxiliary ch 0 voltage measurement (VAux0). |Voltage
66 |36 |Auxiliary ch 1 voltage measurement (VAux1). |Voltage
67 |37 |Auxiliary ch 2 voltage measurement (VAux2). |Voltage
68 |38 |Auxiliary ch 3 voltage measurement (VAux3). |Voltage
69 |39 |Auxiliary ch 4 voltage measurement (VAux4). |Voltage
70 |40 |Auxiliary ch 5 voltage measurement (VAux5). |Voltage
71 |41 |Auxiliary ch 6 voltage measurement (VAux6). |Voltage
72 |42 |Auxiliary ch 7 voltage measurement (VAux7). |Voltage
73 |43 |Auxiliary ch 8 voltage measurement (VAux8). |Voltage
74 |44 |Auxiliary ch 9 voltage measurement (VAux9). |Voltage
75 |45 |Auxiliary ch 10 voltage measurement (VAux10). |Voltage
76 |46 |Auxiliary ch 11 voltage measurement (VAux11). |Voltage
77 |47 |Auxiliary ch 12 voltage measurement (VAux12). |Voltage
78 |48 |Auxiliary ch 13 voltage measurement (VAux13). |Voltage
79 |49 |Auxiliary ch 14 voltage measurement (VAux14). |Voltage
80 |50 |Auxiliary ch 15 voltage measurement (VAux15). |Voltage
81 --------------------------------------------------------------------------------------------------------
82
83 properties:
84 compatible:
85 enum:
86 - xlnx,zynqmp-ams
87
88 interrupts:
89 maxItems: 1
90
91 reg:
92 description: AMS Controller register space
93 maxItems: 1
94
95 clocks:
96 items:
97 - description: AMS reference clock
98
99 ranges:
100 description:
101 Maps the child address space for PS and/or PL.
102 maxItems: 1
103
104 '#address-cells':
105 const: 1
106
107 '#size-cells':
108 const: 1
109
110 '#io-channel-cells':
111 const: 1
112
113 ams-ps@0:
114 type: object
115 description: |
116 PS (Processing System) SYSMON is memory mapped to PS. This block has
117 built-in alarm generation logic that is used to interrupt the processor
118 based on condition set.
119
120 properties:
121 compatible:
122 enum:
123 - xlnx,zynqmp-ams-ps
124
125 reg:
126 description: Register Space for PS-SYSMON
127 maxItems: 1
128
129 required:
130 - compatible
131 - reg
132
133 additionalProperties: false
134
135 ams-pl@400:
136 type: object
137 additionalProperties: false
138 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 monitoring
141 from external master. Out of this interface currently only DRP is
142 supported. This block has alarm generation logic that is used to
143 interrupt the processor based on condition set.
144
145 properties:
146 compatible:
147 items:
148 - enum:
149 - xlnx,zynqmp-ams-pl
150
151 reg:
152 description: Register Space for PL-SYSMON.
153 maxItems: 1
154
155 '#address-cells':
156 const: 1
157
158 '#size-cells':
159 const: 0
160
161 patternProperties:
162 "^channel@([2-4][0-9]|50)$":
163 type: object
164 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 is
171 same as Channel Number for a particular channel.
172 minimum: 20
173 maximum: 50
174
175 xlnx,bipolar:
176 $ref: /schemas/types.yaml#/definitions/flag
177 type: boolean
178 description:
179 If the set channel is used in bipolar mode.
180
181 required:
182 - reg
183
184 additionalProperties: false
185
186 required:
187 - compatible
188 - reg
189 - clocks
190 - ranges
191
192 additionalProperties: false
193
194 examples:
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 };
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