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Subject[PATCH 1/2] dt-bindings: iio: adc: adding MCP3564 ADC
Date
From: Marius Cristea <marius.cristea@microchip.com>

This is the device tree schema for iio driver for
Microchip family of 153.6 ksps, Low-Noise 16/24-Bit
Delta-Sigma ADCs with an SPI interface.

Signed-off-by: Marius Cristea <marius.cristea@microchip.com>
---
.../bindings/iio/adc/microchip,mcp3564.yaml | 88 +++++++++++++++++++
1 file changed, 88 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iio/adc/microchip,mcp3564.yaml

diff --git a/Documentation/devicetree/bindings/iio/adc/microchip,mcp3564.yaml b/Documentation/devicetree/bindings/iio/adc/microchip,mcp3564.yaml
new file mode 100644
index 000000000000..407a125e3776
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/microchip,mcp3564.yaml
@@ -0,0 +1,88 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/microchip,mcp3564.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Microchip MCP346X and MCP356X ADC Family
+
+maintainers:
+ - Marius Cristea <marius.cristea@microchip.com>
+
+description: |
+ Bindings for the Microchip family of 153.6 ksps, Low-Noise 16/24-Bit
+ Delta-Sigma ADCs with an SPI interface.
+
+properties:
+ compatible:
+ enum:
+ - microchip,mcp3461
+ - microchip,mcp3462
+ - microchip,mcp3464
+ - microchip,mcp3461r
+ - microchip,mcp3462r
+ - microchip,mcp3464r
+ - microchip,mcp3561
+ - microchip,mcp3562
+ - microchip,mcp3564
+ - microchip,mcp3561r
+ - microchip,mcp3562r
+ - microchip,mcp3564r
+
+ reg:
+ maxItems: 1
+
+ spi-max-frequency: true
+
+ spi-cpha: true
+
+ spi-cpol: true
+
+ vref-supply:
+ description:
+ Some devices have a specific reference voltage supplied on a different
+ pin to the other supplies. Needed to be able to establish channel scaling
+ unless there is also an internal reference available (e.g. mcp3564r)
+
+ microchip,hw-device-address:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 3
+ description:
+ The address is set on a per-device basis by fuses in the factory,
+ configured on request. If not requested, the fuses are set for 0x1.
+ The device address is part of the device markings to avoid
+ potential confusion. This address is coded on two bits, so four possible
+ addresses are available when multiple devices are present on the same
+ SPI bus with only one Chip Select line for all devices.
+
+ "#io-channel-cells":
+ const: 1
+
+dependencies:
+ spi-cpol: [ spi-cpha ]
+ spi-cpha: [ spi-cpol ]
+
+required:
+ - compatible
+ - microchip,hw-device-address
+
+additionalProperties: false
+
+examples:
+ - |
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ adc@0 {
+ compatible = "microchip,mcp3564r";
+ reg = <0>;
+ vref-supply = <&vref_reg>;
+ spi-cpha;
+ spi-cpol;
+ spi-max-frequency = <10000000>;
+ microchip,hw-device-address = <1>;
+ };
+ };
+...
--
2.34.1
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