[PATCH 2/3] dt-bindings: iio: dac: add support for MCP48FEB02 SPI
From: Ariana Lazar
Date: Thu Jul 23 2026 - 10:00:57 EST
Add the SPI MCP48FxBy1/2/4/8 part numbers, the spi-max-frequency property
and a devicetree example for SPI usage to the existing binding.
Signed-off-by: Ariana Lazar <ariana.lazar@xxxxxxxxxxxxx>
---
.../bindings/iio/dac/microchip,mcp47feb02.yaml | 244 +++++++++++++++++----
1 file changed, 197 insertions(+), 47 deletions(-)
diff --git a/Documentation/devicetree/bindings/iio/dac/microchip,mcp47feb02.yaml b/Documentation/devicetree/bindings/iio/dac/microchip,mcp47feb02.yaml
index d131f136bd15161666932261bcacd6d124b23ede..d25c763241a4f4b147e690213a26efa06282c7c0 100644
--- a/Documentation/devicetree/bindings/iio/dac/microchip,mcp47feb02.yaml
+++ b/Documentation/devicetree/bindings/iio/dac/microchip,mcp47feb02.yaml
@@ -4,58 +4,92 @@
$id: http://devicetree.org/schemas/iio/dac/microchip,mcp47feb02.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
-title: Microchip MCP47F(E/V)B(0/1/2)(1/2/4/8) DAC with I2C Interface Families
+title: Microchip MCP4(7/8)F(E/V)B(0/1/2)(1/2/4/8) DAC with I2C/SPI Interface Families
maintainers:
- Ariana Lazar <ariana.lazar@xxxxxxxxxxxxx>
description: |
- Datasheet for MCP47FEB01, MCP47FEB11, MCP47FEB21, MCP47FEB02, MCP47FEB12,
- MCP47FEB22 can be found here:
- https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ProductDocuments/DataSheets/20005375A.pdf
- Datasheet for MCP47FVB01, MCP47FVB11, MCP47FVB21, MCP47FVB02, MCP47FVB12,
- MCP47FVB22 can be found here:
- https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ProductDocuments/DataSheets/20005405A.pdf
- Datasheet for MCP47FEB04, MCP47FEB14, MCP47FEB24, MCP47FEB08, MCP47FEB18,
- MCP47FEB28, MCP47FVB04, MCP47FVB14, MCP47FVB24, MCP47FVB08, MCP47FVB18,
- MCP47FVB28 can be found here:
- https://ww1.microchip.com/downloads/aemDocuments/documents/MSLD/ProductDocuments/DataSheets/MCP47FXBX48-Data-Sheet-DS200006368A.pdf
-
- +------------+--------------+-------------+-------------+------------+
- | Device | Resolution | Channels | Vref number | Memory |
- |------------|--------------|-------------|-------------|------------|
- | MCP47FEB01 | 8-bit | 1 | 1 | EEPROM |
- | MCP47FEB11 | 10-bit | 1 | 1 | EEPROM |
- | MCP47FEB21 | 12-bit | 1 | 1 | EEPROM |
- |------------|--------------|-------------|-------------|------------|
- | MCP47FEB02 | 8-bit | 2 | 1 | EEPROM |
- | MCP47FEB12 | 10-bit | 2 | 1 | EEPROM |
- | MCP47FEB22 | 12-bit | 2 | 1 | EEPROM |
- |------------|--------------|-------------|-------------|------------|
- | MCP47FVB01 | 8-bit | 1 | 1 | RAM |
- | MCP47FVB11 | 10-bit | 1 | 1 | RAM |
- | MCP47FVB21 | 12-bit | 1 | 1 | RAM |
- |------------|--------------|-------------|-------------|------------|
- | MCP47FVB02 | 8-bit | 2 | 1 | RAM |
- | MCP47FVB12 | 10-bit | 2 | 1 | RAM |
- | MCP47FVB22 | 12-bit | 2 | 1 | RAM |
- |------------|--------------|-------------|-------------|------------|
- | MCP47FVB04 | 8-bit | 4 | 2 | RAM |
- | MCP47FVB14 | 10-bit | 4 | 2 | RAM |
- | MCP47FVB24 | 12-bit | 4 | 2 | RAM |
- |------------|--------------|-------------|-------------|------------|
- | MCP47FVB08 | 8-bit | 8 | 2 | RAM |
- | MCP47FVB18 | 10-bit | 8 | 2 | RAM |
- | MCP47FVB28 | 12-bit | 8 | 2 | RAM |
- |------------|--------------|-------------|-------------|------------|
- | MCP47FEB04 | 8-bit | 4 | 2 | EEPROM |
- | MCP47FEB14 | 10-bit | 4 | 2 | EEPROM |
- | MCP47FEB24 | 12-bit | 4 | 2 | EEPROM |
- |------------|--------------|-------------|-------------|------------|
- | MCP47FEB08 | 8-bit | 8 | 2 | EEPROM |
- | MCP47FEB18 | 10-bit | 8 | 2 | EEPROM |
- | MCP47FEB28 | 12-bit | 8 | 2 | EEPROM |
- +------------+--------------+-------------+-------------+------------+
+ Datasheets for MCP47F(E/V)B(0/1/2)(1/2/4/8) DAC with I2C Interface Families:
+ Datasheet for MCP47FEB01, MCP47FEB11, MCP47FEB21, MCP47FEB02, MCP47FEB12,
+ MCP47FEB22 can be found here:
+ https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ProductDocuments/DataSheets/20005375A.pdf
+ Datasheet for MCP47FVB01, MCP47FVB11, MCP47FVB21, MCP47FVB02, MCP47FVB12,
+ MCP47FVB22 can be found here:
+ https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ProductDocuments/DataSheets/20005405A.pdf
+ Datasheet for MCP47FEB04, MCP47FEB14, MCP47FEB24, MCP47FEB08, MCP47FEB18,
+ MCP47FEB28, MCP47FVB04, MCP47FVB14, MCP47FVB24, MCP47FVB08, MCP47FVB18,
+ MCP47FVB28 can be found here:
+ https://ww1.microchip.com/downloads/aemDocuments/documents/MSLD/ProductDocuments/DataSheets/MCP47FXBX48-Data-Sheet-DS200006368A.pdf
+ Datasheets for MCP48F(E/V)B(0/1/2)(1/2/4/8) DAC with SPI Interface Families:
+ Datasheet for MCP48FEB01, MCP48FEB02, MCP48FEB11, MCP48FEB12, MCP48FEB21,
+ MCP48FEB22 can be found here:
+ https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ProductDocuments/DataSheets/20005429B.pdf
+ Datasheet for MCP48FVB01, MCP48FVB02, MCP48FVB11, MCP48FVB12, MCP48FVB21,
+ MCP48FVB22 can be found here:
+ https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ProductDocuments/DataSheets/20005466A.pdf
+ Datasheet for MCP48FEB04, MCP48FEB14, MCP48FEB24, MCP48FEB08, MCP48FEB18,
+ MCP48FEB28, MCP48FVB04, MCP48FVB14, MCP48FVB24, MCP48FVB08, MCP48FVB18,
+ MCP48FVB28 can be found here:
+ https://ww1.microchip.com/downloads/aemDocuments/documents/MSLD/ProductDocuments/DataSheets/MCP48FXBX4-8-Family-Data-Sheet-DS20006362A.pdf
+
+ +------------+--------------+-------------+-------------+------------+------------+
+ | Device | Resolution | Channels | Vref number | Memory | Interface |
+ |------------|--------------|-------------|-------------|------------|------------|
+ | MCP47FEB01 | | 1 | 1 | EEPROM | I2C |
+ | MCP47FEB02 | | 2 | 1 | EEPROM | I2C |
+ | MCP47FEB04 | | 4 | 2 | EEPROM | I2C |
+ | MCP47FEB08 | 8-bit | 8 | 2 | EEPROM | I2C |
+ | MCP48FEB01 | | 1 | 1 | EEPROM | SPI |
+ | MCP48FEB02 | | 2 | 1 | EEPROM | SPI |
+ | MCP48FEB04 | | 4 | 2 | EEPROM | SPI |
+ | MCP48FEB08 | | 8 | 2 | EEPROM | SPI |
+ |------------|--------------|-------------|-------------|------------|------------|
+ | MCP47FEB11 | | 1 | 1 | EEPROM | I2C |
+ | MCP47FEB12 | | 2 | 1 | EEPROM | I2C |
+ | MCP47FEB14 | | 4 | 2 | EEPROM | I2C |
+ | MCP47FEB18 | 10-bit | 8 | 2 | EEPROM | I2C |
+ | MCP48FEB11 | | 1 | 1 | EEPROM | SPI |
+ | MCP48FEB12 | | 2 | 1 | EEPROM | SPI |
+ | MCP48FEB14 | | 4 | 2 | EEPROM | SPI |
+ | MCP48FEB18 | | 8 | 2 | EEPROM | SPI |
+ |------------|--------------|-------------|-------------|------------|------------|
+ | MCP47FEB21 | | 1 | 1 | EEPROM | I2C |
+ | MCP47FEB22 | | 2 | 1 | EEPROM | I2C |
+ | MCP47FEB24 | | 4 | 2 | EEPROM | I2C |
+ | MCP47FEB28 | 12-bit | 8 | 2 | EEPROM | I2C |
+ | MCP48FEB21 | | 1 | 1 | EEPROM | SPI |
+ | MCP48FEB22 | | 2 | 1 | EEPROM | SPI |
+ | MCP48FEB24 | | 4 | 2 | EEPROM | SPI |
+ | MCP48FEB28 | | 8 | 2 | EEPROM | SPI |
+ |------------|--------------|-------------|-------------|------------|------------|
+ | MCP47FVB01 | | 1 | 1 | RAM | I2C |
+ | MCP47FVB02 | | 2 | 1 | RAM | I2C |
+ | MCP47FVB04 | | 4 | 2 | RAM | I2C |
+ | MCP47FVB08 | 8-bit | 8 | 2 | RAM | I2C |
+ | MCP48FVB01 | | 1 | 1 | RAM | SPI |
+ | MCP48FVB02 | | 2 | 1 | RAM | SPI |
+ | MCP48FVB04 | | 4 | 2 | RAM | SPI |
+ | MCP48FVB08 | | 8 | 2 | RAM | SPI |
+ |------------|--------------|-------------|-------------|------------|------------|
+ | MCP47FVB11 | | 1 | 1 | RAM | I2C |
+ | MCP47FVB12 | | 2 | 1 | RAM | I2C |
+ | MCP47FVB14 | | 4 | 2 | RAM | I2C |
+ | MCP47FVB18 | 10-bit | 8 | 2 | RAM | I2C |
+ | MCP48FVB11 | | 1 | 1 | RAM | SPI |
+ | MCP48FVB12 | | 2 | 1 | RAM | SPI |
+ | MCP48FVB14 | | 4 | 2 | RAM | SPI |
+ | MCP48FVB18 | | 8 | 2 | RAM | SPI |
+ |------------|--------------|-------------|-------------|------------|------------|
+ | MCP47FVB21 | | 1 | 1 | RAM | I2C |
+ | MCP47FVB22 | | 2 | 1 | RAM | I2C |
+ | MCP47FVB24 | | 4 | 2 | RAM | I2C |
+ | MCP47FVB28 | 12-bit | 8 | 2 | RAM | I2C |
+ | MCP48FVB21 | | 1 | 1 | RAM | SPI |
+ | MCP48FVB22 | | 2 | 1 | RAM | SPI |
+ | MCP48FVB24 | | 4 | 2 | RAM | SPI |
+ | MCP48FVB28 | | 8 | 2 | RAM | SPI |
+ +------------+--------------+-------------+-------------+------------+------------+
properties:
compatible:
@@ -84,10 +118,37 @@ properties:
- microchip,mcp47feb08
- microchip,mcp47feb18
- microchip,mcp47feb28
+ - microchip,mcp48feb01
+ - microchip,mcp48feb02
+ - microchip,mcp48feb04
+ - microchip,mcp48feb08
+ - microchip,mcp48feb11
+ - microchip,mcp48feb12
+ - microchip,mcp48feb14
+ - microchip,mcp48feb18
+ - microchip,mcp48feb21
+ - microchip,mcp48feb22
+ - microchip,mcp48feb24
+ - microchip,mcp48feb28
+ - microchip,mcp48fvb01
+ - microchip,mcp48fvb02
+ - microchip,mcp48fvb04
+ - microchip,mcp48fvb08
+ - microchip,mcp48fvb11
+ - microchip,mcp48fvb12
+ - microchip,mcp48fvb14
+ - microchip,mcp48fvb18
+ - microchip,mcp48fvb21
+ - microchip,mcp48fvb22
+ - microchip,mcp48fvb24
+ - microchip,mcp48fvb28
reg:
maxItems: 1
+ spi-max-frequency:
+ maximum: 10000000
+
"#address-cells":
const: 1
@@ -178,6 +239,13 @@ required:
- vdd-supply
allOf:
+ - if:
+ properties:
+ compatible:
+ contains:
+ pattern: "^microchip,mcp48f[ev]b[0-2][1248]$"
+ then:
+ $ref: /schemas/spi/spi-peripheral-props.yaml#
- if:
properties:
compatible:
@@ -189,6 +257,12 @@ allOf:
- microchip,mcp47fvb01
- microchip,mcp47fvb11
- microchip,mcp47fvb21
+ - microchip,mcp48feb01
+ - microchip,mcp48feb11
+ - microchip,mcp48feb21
+ - microchip,mcp48fvb01
+ - microchip,mcp48fvb11
+ - microchip,mcp48fvb21
then:
properties:
lat1-gpios: false
@@ -211,6 +285,12 @@ allOf:
- microchip,mcp47fvb02
- microchip,mcp47fvb12
- microchip,mcp47fvb22
+ - microchip,mcp48feb02
+ - microchip,mcp48feb12
+ - microchip,mcp48feb22
+ - microchip,mcp48fvb02
+ - microchip,mcp48fvb12
+ - microchip,mcp48fvb22
then:
properties:
lat1-gpios: false
@@ -233,6 +313,12 @@ allOf:
- microchip,mcp47feb04
- microchip,mcp47feb14
- microchip,mcp47feb24
+ - microchip,mcp48feb04
+ - microchip,mcp48feb14
+ - microchip,mcp48feb24
+ - microchip,mcp48fvb04
+ - microchip,mcp48fvb14
+ - microchip,mcp48fvb24
then:
patternProperties:
"^channel@[0-3]$":
@@ -251,6 +337,12 @@ allOf:
- microchip,mcp47feb08
- microchip,mcp47feb18
- microchip,mcp47feb28
+ - microchip,mcp48feb08
+ - microchip,mcp48feb18
+ - microchip,mcp48feb28
+ - microchip,mcp48fvb08
+ - microchip,mcp48fvb18
+ - microchip,mcp48fvb28
then:
patternProperties:
"^channel@[0-7]$":
@@ -272,6 +364,39 @@ allOf:
properties:
microchip,vref1-buffered: false
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - microchip,mcp47feb01
+ - microchip,mcp47feb02
+ - microchip,mcp47feb04
+ - microchip,mcp47feb08
+ - microchip,mcp47feb11
+ - microchip,mcp47feb12
+ - microchip,mcp47feb14
+ - microchip,mcp47feb18
+ - microchip,mcp47feb21
+ - microchip,mcp47feb22
+ - microchip,mcp47feb24
+ - microchip,mcp47feb28
+ - microchip,mcp47fvb01
+ - microchip,mcp47fvb02
+ - microchip,mcp47fvb04
+ - microchip,mcp47fvb08
+ - microchip,mcp47fvb11
+ - microchip,mcp47fvb12
+ - microchip,mcp47fvb14
+ - microchip,mcp47fvb18
+ - microchip,mcp47fvb21
+ - microchip,mcp47fvb22
+ - microchip,mcp47fvb24
+ - microchip,mcp47fvb28
+ then:
+ properties:
+ spi-max-frequency: false
+
additionalProperties: false
examples:
@@ -299,4 +424,29 @@ examples:
};
};
};
+ - |
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ dac@60 {
+ compatible = "microchip,mcp48feb02";
+ reg = <0x60>;
+ vdd-supply = <&vdac_vdd>;
+ vref-supply = <&vref_reg>;
+ spi-max-frequency = <10000000>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+ channel@0 {
+ reg = <0>;
+ label = "Adjustable_voltage_ch0";
+ };
+
+ channel@1 {
+ reg = <0x1>;
+ label = "Adjustable_voltage_ch1";
+ };
+ };
+ };
...
--
2.43.0