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Date: Thu, 28 Oct 2021 16:48:44 +0300
From: Cosmin Tanislav <demonsingur@...il.com>
To: unlisted-recipients:; (no To-header on input)
Cc: demonsingur@...il.com, cosmin.tanislav@...log.com,
Lars-Peter Clausen <lars@...afoo.de>,
Michael Hennerich <Michael.Hennerich@...log.com>,
Jonathan Cameron <jic23@...nel.org>,
Rob Herring <robh+dt@...nel.org>, linux-iio@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/3] dt-bindings: iio: add AD74413R
Add device tree bindings for AD74413R.
Signed-off-by: Cosmin Tanislav <cosmin.tanislav@...log.com>
---
.../bindings/iio/addac/adi,ad74413r.yaml | 163 ++++++++++++++++++
include/dt-bindings/iio/addac/adi,ad74413r.h | 30 ++++
2 files changed, 193 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml
create mode 100644 include/dt-bindings/iio/addac/adi,ad74413r.h
diff --git a/Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml b/Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml
new file mode 100644
index 000000000000..ed4ee3047fbe
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml
@@ -0,0 +1,163 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/addac/adi,ad74413r.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AD74413R/AD74412R device driver
+
+maintainers:
+ - Cosmin Tanislav <cosmin.tanislav@...log.com>
+
+description: |
+ The AD74413R and AD74412R are quad-channel software configurable input/output
+ solutions for building and process control applications. They contain
+ functionality for analog output, analog input, digital input, resistance
+ temperature detector, and thermocouple measurements integrated
+ into a single chip solution with an SPI interface.
+ The devices feature a 16-bit ADC and four configurable 13-bit DACs to provide
+ four configurable input/output channels and a suite of diagnostic functions.
+
+properties:
+ compatible:
+ enum:
+ - adi,ad74413r
+ - adi,ad74412r
+
+ reg:
+ maxItems: 1
+
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+ spi-max-frequency:
+ maximum: 1000000
+
+ spi-cpol: true
+
+ interrupts:
+ maxItems: 1
+
+ refin-supply:
+ description:
+ Reference voltage regulator.
+
+ adi,rsense-resistance-ohms:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ RSense resistance values in Ohms.
+
+required:
+ - compatible
+ - reg
+ - spi-max-frequency
+ - spi-cpol
+ - refin-supply
+ - adi,rsense-resistance-ohm
+
+additionalProperties: false
+
+patternProperties:
+ "^channel@[0-3]$":
+ type: object
+ description: Represents the external channels which are connected to the device.
+
+ properties:
+ reg:
+ description: |
+ The channel number. It can have up to 4 channels numbered from 0 to 3.
+ maxItems: 1
+ minimum: 0
+ maximum: 3
+
+ adi,ch-func:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: |
+ Channel function.
+ HART functions are not supported on AD74412R.
+ 0 - CH_FUNC_HIGH_IMPEDANCE
+ 1 - CH_FUNC_VOLTAGE_OUTPUT
+ 2 - CH_FUNC_CURRENT_OUTPUT
+ 3 - CH_FUNC_VOLTAGE_INPUT
+ 4 - CH_FUNC_CURRENT_INPUT_EXT_POWER
+ 5 - CH_FUNC_CURRENT_INPUT_LOOP_POWER
+ 6 - CH_FUNC_RESISTANCE_INPUT
+ 7 - CH_FUNC_DIGITAL_INPUT_LOGIC
+ 8 - CH_FUNC_DIGITAL_INPUT_LOOP_POWER
+ 9 - CH_FUNC_CURRENT_INPUT_EXT_POWER_HART
+ 10 - CH_FUNC_CURRENT_INPUT_LOOP_POWER_HART
+ maxItems: 1
+ minimum: 0
+ maximum: 10
+
+ adi,gpo-config:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: |
+ GPO config.
+ 0 - GPO_CONFIG_100K_PULL_DOWN
+ 1 - GPO_CONFIG_LOGIC
+ 3 - GPO_CONFIG_DEBOUNCED_COMPARATOR
+ 4 - GPO_CONFIG_HIGH_IMPEDANCE
+ maxItems: 1
+ enum: [0, 1, 3, 4]
+
+ required:
+ - reg
+
+examples:
+ - |
+ spi0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ cs-gpios = <&gpio 17 GPIO_ACTIVE_LOW>;
+ status = "okay";
+
+ ad74413r@0 {
+ compatible = "adi,ad74413r";
+ reg = <0>;
+ spi-max-frequency = <1000000>;
+ spi-cpol;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ interrupt-parent = <&gpio>;
+ interrupts = <26 0>;
+
+ refin-supply = <&ad74413r_refin>;
+ adi,rsense-resistance-ohm = <100>;
+
+ channel@0 {
+ reg = <0>;
+
+ adi,ch-func = <CH_FUNC_VOLTAGE_OUTPUT>;
+ adi,gpo-config = <GPO_CONFIG_LOGIC>;
+ };
+
+ channel@1 {
+ reg = <1>;
+
+ adi,ch-func = <CH_FUNC_CURRENT_OUTPUT>;
+ adi,gpo-config = <GPO_CONFIG_LOGIC>;
+ };
+
+ channel@2 {
+ reg = <2>;
+
+ adi,ch-func = <CH_FUNC_VOLTAGE_INPUT>;
+ adi,gpo-config = <GPO_CONFIG_DEBOUNCED_COMPARATOR>;
+ };
+
+ channel@3 {
+ reg = <3>;
+
+ adi,ch-func = <CH_FUNC_CURRENT_INPUT_EXT_POWER>;
+ adi,gpo-config = <GPO_CONFIG_DEBOUNCED_COMPARATOR>;
+ };
+ };
+ };
+...
diff --git a/include/dt-bindings/iio/addac/adi,ad74413r.h b/include/dt-bindings/iio/addac/adi,ad74413r.h
new file mode 100644
index 000000000000..bde558d9731c
--- /dev/null
+++ b/include/dt-bindings/iio/addac/adi,ad74413r.h
@@ -0,0 +1,30 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef _DT_BINDINGS_ADI_AD74413R_H
+#define _DT_BINDINGS_ADI_AD74413R_H
+
+#define GPO_CONFIG_100K_PULL_DOWN 0x0
+#define GPO_CONFIG_LOGIC 0x1
+#define GPO_CONFIG_LOGIC_PARALLEL 0x2
+#define GPO_CONFIG_DEBOUNCED_COMPARATOR 0x3
+#define GPO_CONFIG_HIGH_IMPEDANCE 0x4
+
+#define GPO_CONFIG_MIN GPO_CONFIG_100K_PULL_DOWN
+#define GPO_CONFIG_MAX GPO_CONFIG_HIGH_IMPEDANCE
+
+#define CH_FUNC_HIGH_IMPEDANCE 0x0
+#define CH_FUNC_VOLTAGE_OUTPUT 0x1
+#define CH_FUNC_CURRENT_OUTPUT 0x2
+#define CH_FUNC_VOLTAGE_INPUT 0x3
+#define CH_FUNC_CURRENT_INPUT_EXT_POWER 0x4
+#define CH_FUNC_CURRENT_INPUT_LOOP_POWER 0x5
+#define CH_FUNC_RESISTANCE_INPUT 0x6
+#define CH_FUNC_DIGITAL_INPUT_LOGIC 0x7
+#define CH_FUNC_DIGITAL_INPUT_LOOP_POWER 0x8
+#define CH_FUNC_CURRENT_INPUT_EXT_POWER_HART 0x9
+#define CH_FUNC_CURRENT_INPUT_LOOP_POWER_HART 0xA
+
+#define CH_FUNC_MIN CH_FUNC_HIGH_IMPEDANCE
+#define CH_FUNC_MAX CH_FUNC_CURRENT_INPUT_LOOP_POWER_HART
+
+#endif /* _DT_BINDINGS_ADI_AD74413R_H */
--
2.33.0
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