From: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
I'm not sure vdd-supply absolutely has to be provided if vref-supply
is, but as the previous binding docs stated it was required it seems
reasonable to leave it as such.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Cc: Tomas Novotny <tomas@xxxxxxxxxx>
---
.../devicetree/bindings/iio/dac/mcp4725.txt | 35 ---------
.../bindings/iio/dac/microchip,mcp4725.yaml | 71 +++++++++++++++++++
2 files changed, 71 insertions(+), 35 deletions(-)
diff --git a/Documentation/devicetree/bindings/iio/dac/mcp4725.txt b/Documentation/devicetree/bindings/iio/dac/mcp4725.txt
deleted file mode 100644
index 1bc6c093fbfe..000000000000
--- a/Documentation/devicetree/bindings/iio/dac/mcp4725.txt
+++ /dev/null
@@ -1,35 +0,0 @@
-Microchip mcp4725 and mcp4726 DAC device driver
-
-Required properties:
- - compatible: Must be "microchip,mcp4725" or "microchip,mcp4726"
- - reg: Should contain the DAC I2C address
- - vdd-supply: Phandle to the Vdd power supply. This supply is used as a
- voltage reference on mcp4725. It is used as a voltage reference on
- mcp4726 if there is no vref-supply specified.
-
-Optional properties (valid only for mcp4726):
- - vref-supply: Optional phandle to the Vref power supply. Vref pin is
- used as a voltage reference when this supply is specified.
- - microchip,vref-buffered: Boolean to enable buffering of the external
- Vref pin. This boolean is not valid without the vref-supply. Quoting
- the datasheet: This is offered in cases where the reference voltage
- does not have the current capability not to drop its voltage when
- connected to the internal resistor ladder circuit.
-
-Examples:
-
- /* simple mcp4725 */
- mcp4725@60 {
- compatible = "microchip,mcp4725";
- reg = <0x60>;
- vdd-supply = <&vdac_vdd>;
- };
-
- /* mcp4726 with the buffered external reference voltage */
- mcp4726@60 {
- compatible = "microchip,mcp4726";
- reg = <0x60>;
- vdd-supply = <&vdac_vdd>;
- vref-supply = <&vdac_vref>;
- microchip,vref-buffered;
- };
diff --git a/Documentation/devicetree/bindings/iio/dac/microchip,mcp4725.yaml b/Documentation/devicetree/bindings/iio/dac/microchip,mcp4725.yaml
new file mode 100644
index 000000000000..271998610ceb
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/dac/microchip,mcp4725.yaml
@@ -0,0 +1,71 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/dac/microchip,mcp4725.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Microchip mcp4725 and mcp4726 DAC
+
+maintainers:
+ - Tomas Novotny <tomas@xxxxxxxxxx>
+
+properties:
+ compatible:
+ enum:
+ - microchip,mcp4725
+ - microchip,mcp4726
+
+ reg:
+ maxItems: 1
+
+ vdd-supply:
+ description: |
+ Provides both power and acts as the reference supply on the mcp4725.
+ For the mcp4726 it will be used as the reference voltage if vref-supply
+ is not provided.
+
+ vref-supply:
+ description:
+ Vref pin is used as a voltage reference when this supply is specified.
+
+ microchip,vref-buffered:
+ type: boolean
+ description: |
+ Enable buffering of the external Vref pin. This boolean is not valid
+ without the vref-supply. Quoting the datasheet: This is offered in
+ cases where the reference voltage does not have the current
+ capability not to drop its voltage when connected to the internal
+ resistor ladder circuit.
+
+allOf:
+ - if:
+ not:
+ properties:
+ compatible:
+ contains:
+ const: microchip,mcp4726
+ then:
+ properties:
+ vref-supply: false
+ microchip,vref-buffered: false
+
+required:
+ - compatible
+ - reg
+ - vdd-supply
+
+additionalProperties: false
+
+examples:
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ mcp4725@60 {
+ compatible = "microchip,mcp4725";
+ reg = <0x60>;
+ vdd-supply = <&vdac_vdd>;
+ };
+ };
+...
--
2.28.0
