iio/resolver/adi%2Cad2s1210.yaml

1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Analog Devices AD2S1210 Resolver-to-Digital Converter
10   - Michael Hennerich <michael.hennerich@analog.com>
13   The AD2S1210 is a complete 10-bit to 16-bit resolution tracking
14   resolver-to-digital converter, integrating an on-board programmable
22   The mode of operation of the communication channel (parallel or serial) is
23   selected by the A0 and A1 input pins. In normal mode, data is latched by
25   data is read or written using a register access scheme (address byte with
29      0   0  Normal mode - position output
30      0   1  Normal mode - velocity output
34   In normal mode, the resolution of the digital output is selected using
35   the RES0 and RES1 input pins. In configuration mode, the resolution is
44   Note on SPI connections: The CS line on the AD2S1210 should hard-wired to
49   https://www.analog.com/media/en/technical-documentation/data-sheets/ad2s1210.pdf
58   spi-max-frequency:
61   spi-cpha: true
63   avdd-supply:
68   dvdd-supply:
73   vdrive-supply:
82   reset-gpios:
88   sample-gpios:
94   mode-gpios:
101   resolution-gpios:
104       resolution of the digital output. If omitted, it is assumed that the
105       RES0 and RES1 pins are hard-wired to match the assigned-resolution-bits
110   fault-gpios:
118   adi,fixed-mode:
120       This is used to indicate the selected mode if A0 and A1 are hard-wired
121       instead of connected to GPIOS (i.e. mode-gpios is omitted).
125   assigned-resolution-bits:
129       be measured. If resolution-gpios is omitted, it is assumed that RES0 and
130       RES1 are hard-wired to match this value.
134   - compatible
135   - reg
136   - spi-cpha
137   - avdd-supply
138   - dvdd-supply
139   - vdrive-supply
140   - clocks
141   - sample-gpios
142   - assigned-resolution-bits
145   - required:
146       - mode-gpios
147   - required:
148       - adi,fixed-mode
151   - $ref: /schemas/spi/spi-peripheral-props.yaml#
156   - |
157     #include <dt-bindings/gpio/gpio.h>
160         #address-cells = <1>;
161         #size-cells = <0>;
166             spi-max-frequency = <20000000>;
167             spi-cpha;
168             avdd-supply = <&avdd_regulator>;
169             dvdd-supply = <&dvdd_regulator>;
170             vdrive-supply = <&vdrive_regulator>;
172             sample-gpios = <&gpio0 90 GPIO_ACTIVE_LOW>;
173             mode-gpios = <&gpio0 86 0>, <&gpio0 87 0>;
174             resolution-gpios = <&gpio0 88 0>, <&gpio0 89 0>;
175             assigned-resolution-bits = <16>;