diff mbox series

[3/6] dt-bindings: iio: explicitly list SPI CPHA and CPOL

Message ID 20220721153155.245336-4-krzysztof.kozlowski@linaro.org (mailing list archive)
State New, archived
Headers show
Series dt-bindings: iio/panel/eeprom/misc/net/spi: drop SPI CPHA and CPOL | expand

Commit Message

Krzysztof Kozlowski July 21, 2022, 3:31 p.m. UTC
The spi-cpha and spi-cpol properties are device specific and should be
accepted only if device really needs them.  Explicitly list them in
device bindings in preparation of their removal from generic
spi-peripheral-props.yaml schema.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 .../devicetree/bindings/iio/accel/adi,adxl345.yaml   | 10 ++++++++--
 .../devicetree/bindings/iio/adc/adi,ad7192.yaml      | 10 ++++++++--
 .../devicetree/bindings/iio/adc/adi,ad7292.yaml      |  5 ++++-
 .../devicetree/bindings/iio/adc/adi,ad7606.yaml      | 10 ++++++++--
 .../devicetree/bindings/iio/adc/adi,ad7768-1.yaml    | 10 ++++++++--
 .../bindings/iio/adc/microchip,mcp3201.yaml          | 12 ++++++++++--
 .../devicetree/bindings/iio/adc/ti,adc084s021.yaml   | 11 +++++++++--
 .../devicetree/bindings/iio/adc/ti,ads124s08.yaml    |  5 ++++-
 .../devicetree/bindings/iio/adc/ti,ads131e08.yaml    |  5 ++++-
 .../devicetree/bindings/iio/addac/adi,ad74413r.yaml  |  5 ++++-
 .../devicetree/bindings/iio/dac/adi,ad5592r.yaml     |  5 ++++-
 .../devicetree/bindings/iio/dac/adi,ad5755.yaml      | 10 ++++++++--
 .../devicetree/bindings/iio/dac/adi,ad5758.yaml      |  6 +++++-
 .../devicetree/bindings/iio/dac/adi,ad5766.yaml      |  5 ++++-
 .../devicetree/bindings/iio/dac/ti,dac082s085.yaml   |  9 +++++++--
 .../bindings/iio/gyroscope/adi,adxrs290.yaml         | 10 ++++++++--
 .../devicetree/bindings/iio/imu/adi,adis16460.yaml   | 12 +++++++++---
 .../devicetree/bindings/iio/imu/adi,adis16475.yaml   | 10 ++++++++--
 .../devicetree/bindings/iio/imu/adi,adis16480.yaml   | 11 +++++++++--
 .../bindings/iio/imu/invensense,icm42600.yaml        | 12 ++++++++++--
 .../bindings/iio/proximity/ams,as3935.yaml           |  5 ++++-
 .../devicetree/bindings/iio/resolver/adi,ad2s90.yaml | 10 ++++++++--
 .../bindings/iio/temperature/maxim,max31855k.yaml    |  6 +++++-
 .../bindings/iio/temperature/maxim,max31856.yaml     |  6 +++++-
 .../bindings/iio/temperature/maxim,max31865.yaml     |  6 +++++-
 25 files changed, 166 insertions(+), 40 deletions(-)

Comments

Rob Herring July 21, 2022, 7:32 p.m. UTC | #1
On Thu, Jul 21, 2022 at 05:31:52PM +0200, Krzysztof Kozlowski wrote:
> The spi-cpha and spi-cpol properties are device specific and should be
> accepted only if device really needs them.  Explicitly list them in
> device bindings in preparation of their removal from generic
> spi-peripheral-props.yaml schema.
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> ---
>  .../devicetree/bindings/iio/accel/adi,adxl345.yaml   | 10 ++++++++--
>  .../devicetree/bindings/iio/adc/adi,ad7192.yaml      | 10 ++++++++--
>  .../devicetree/bindings/iio/adc/adi,ad7292.yaml      |  5 ++++-
>  .../devicetree/bindings/iio/adc/adi,ad7606.yaml      | 10 ++++++++--
>  .../devicetree/bindings/iio/adc/adi,ad7768-1.yaml    | 10 ++++++++--
>  .../bindings/iio/adc/microchip,mcp3201.yaml          | 12 ++++++++++--
>  .../devicetree/bindings/iio/adc/ti,adc084s021.yaml   | 11 +++++++++--
>  .../devicetree/bindings/iio/adc/ti,ads124s08.yaml    |  5 ++++-
>  .../devicetree/bindings/iio/adc/ti,ads131e08.yaml    |  5 ++++-
>  .../devicetree/bindings/iio/addac/adi,ad74413r.yaml  |  5 ++++-
>  .../devicetree/bindings/iio/dac/adi,ad5592r.yaml     |  5 ++++-
>  .../devicetree/bindings/iio/dac/adi,ad5755.yaml      | 10 ++++++++--
>  .../devicetree/bindings/iio/dac/adi,ad5758.yaml      |  6 +++++-
>  .../devicetree/bindings/iio/dac/adi,ad5766.yaml      |  5 ++++-
>  .../devicetree/bindings/iio/dac/ti,dac082s085.yaml   |  9 +++++++--
>  .../bindings/iio/gyroscope/adi,adxrs290.yaml         | 10 ++++++++--
>  .../devicetree/bindings/iio/imu/adi,adis16460.yaml   | 12 +++++++++---
>  .../devicetree/bindings/iio/imu/adi,adis16475.yaml   | 10 ++++++++--
>  .../devicetree/bindings/iio/imu/adi,adis16480.yaml   | 11 +++++++++--
>  .../bindings/iio/imu/invensense,icm42600.yaml        | 12 ++++++++++--
>  .../bindings/iio/proximity/ams,as3935.yaml           |  5 ++++-
>  .../devicetree/bindings/iio/resolver/adi,ad2s90.yaml | 10 ++++++++--
>  .../bindings/iio/temperature/maxim,max31855k.yaml    |  6 +++++-
>  .../bindings/iio/temperature/maxim,max31856.yaml     |  6 +++++-
>  .../bindings/iio/temperature/maxim,max31865.yaml     |  6 +++++-
>  25 files changed, 166 insertions(+), 40 deletions(-)

This whole patch can be dropped which will make merging easier.

Rob
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/iio/accel/adi,adxl345.yaml b/Documentation/devicetree/bindings/iio/accel/adi,adxl345.yaml
index 9bb039e2f533..0b498b9c9823 100644
--- a/Documentation/devicetree/bindings/iio/accel/adi,adxl345.yaml
+++ b/Documentation/devicetree/bindings/iio/accel/adi,adxl345.yaml
@@ -28,9 +28,15 @@  properties:
   reg:
     maxItems: 1
 
-  spi-cpha: true
+  spi-cpha:
+    type: boolean
+    description:
+      The device requires shifted clock phase (CPHA) mode.
 
-  spi-cpol: true
+  spi-cpol:
+    type: boolean
+    description:
+      The device requires inverse clock polarity (CPOL) mode.
 
   spi-max-frequency: true
 
diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml
index 22b7ed3723f6..d533eb6e9233 100644
--- a/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml
@@ -26,9 +26,15 @@  properties:
   reg:
     maxItems: 1
 
-  spi-cpol: true
+  spi-cpha:
+    type: boolean
+    description:
+      The device requires shifted clock phase (CPHA) mode.
 
-  spi-cpha: true
+  spi-cpol:
+    type: boolean
+    description:
+      The device requires inverse clock polarity (CPOL) mode.
 
   spi-max-frequency: true
 
diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7292.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7292.yaml
index a3e39a40c9b3..c0be5c87bd5c 100644
--- a/Documentation/devicetree/bindings/iio/adc/adi,ad7292.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7292.yaml
@@ -28,7 +28,10 @@  properties:
     description: |
       The regulator supply for ADC and DAC reference voltage.
 
-  spi-cpha: true
+  spi-cpha:
+    type: boolean
+    description:
+      The device requires shifted clock phase (CPHA) mode.
 
   spi-max-frequency: true
 
diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml
index 73775174cf57..181358c90f8e 100644
--- a/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml
@@ -29,9 +29,15 @@  properties:
   reg:
     maxItems: 1
 
-  spi-cpha: true
+  spi-cpha:
+    type: boolean
+    description:
+      The device requires shifted clock phase (CPHA) mode.
 
-  spi-cpol: true
+  spi-cpol:
+    type: boolean
+    description:
+      The device requires inverse clock polarity (CPOL) mode.
 
   spi-max-frequency: true
 
diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7768-1.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7768-1.yaml
index a85a28145ef6..6f9457f41ac3 100644
--- a/Documentation/devicetree/bindings/iio/adc/adi,ad7768-1.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7768-1.yaml
@@ -52,9 +52,15 @@  properties:
 
   spi-max-frequency: true
 
-  spi-cpol: true
+  spi-cpha:
+    type: boolean
+    description:
+      The device requires shifted clock phase (CPHA) mode.
 
-  spi-cpha: true
+  spi-cpol:
+    type: boolean
+    description:
+      The device requires inverse clock polarity (CPOL) mode.
 
   "#io-channel-cells":
     const: 1
diff --git a/Documentation/devicetree/bindings/iio/adc/microchip,mcp3201.yaml b/Documentation/devicetree/bindings/iio/adc/microchip,mcp3201.yaml
index fcc1ba53b20d..b880354567e3 100644
--- a/Documentation/devicetree/bindings/iio/adc/microchip,mcp3201.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/microchip,mcp3201.yaml
@@ -33,8 +33,16 @@  properties:
     maxItems: 1
 
   spi-max-frequency: true
-  spi-cpha: true
-  spi-cpol: true
+
+  spi-cpha:
+    type: boolean
+    description:
+      The device requires shifted clock phase (CPHA) mode.
+
+  spi-cpol:
+    type: boolean
+    description:
+      The device requires inverse clock polarity (CPOL) mode.
 
   vref-supply:
     description: External reference.
diff --git a/Documentation/devicetree/bindings/iio/adc/ti,adc084s021.yaml b/Documentation/devicetree/bindings/iio/adc/ti,adc084s021.yaml
index 1a113b30a414..07e1d54e93fe 100644
--- a/Documentation/devicetree/bindings/iio/adc/ti,adc084s021.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/ti,adc084s021.yaml
@@ -24,8 +24,15 @@  properties:
   vref-supply:
     description: External reference, needed to establish input scaling
 
-  spi-cpol: true
-  spi-cpha: true
+  spi-cpha:
+    type: boolean
+    description:
+      The device requires shifted clock phase (CPHA) mode.
+
+  spi-cpol:
+    type: boolean
+    description:
+      The device requires inverse clock polarity (CPOL) mode.
 
   "#io-channel-cells":
     const: 1
diff --git a/Documentation/devicetree/bindings/iio/adc/ti,ads124s08.yaml b/Documentation/devicetree/bindings/iio/adc/ti,ads124s08.yaml
index 9f5e96439c01..74be1b4a4c27 100644
--- a/Documentation/devicetree/bindings/iio/adc/ti,ads124s08.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/ti,ads124s08.yaml
@@ -20,7 +20,10 @@  properties:
 
   spi-max-frequency: true
 
-  spi-cpha: true
+  spi-cpha:
+    type: boolean
+    description:
+      The device requires shifted clock phase (CPHA) mode.
 
   reset-gpios:
     maxItems: 1
diff --git a/Documentation/devicetree/bindings/iio/adc/ti,ads131e08.yaml b/Documentation/devicetree/bindings/iio/adc/ti,ads131e08.yaml
index e0670e3fbb72..b05426a4cae5 100644
--- a/Documentation/devicetree/bindings/iio/adc/ti,ads131e08.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/ti,ads131e08.yaml
@@ -30,7 +30,10 @@  properties:
 
   spi-max-frequency: true
 
-  spi-cpha: true
+  spi-cpha:
+    type: boolean
+    description:
+      The device requires shifted clock phase (CPHA) mode.
 
   clocks:
     description: |
diff --git a/Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml b/Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml
index baa65a521bad..5f5354601a0f 100644
--- a/Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml
+++ b/Documentation/devicetree/bindings/iio/addac/adi,ad74413r.yaml
@@ -39,7 +39,10 @@  properties:
   spi-max-frequency:
     maximum: 1000000
 
-  spi-cpol: true
+  spi-cpol:
+    type: boolean
+    description:
+      The device requires inverse clock polarity (CPOL) mode.
 
   interrupts:
     maxItems: 1
diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5592r.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5592r.yaml
index 30194880f457..7f094e31bddc 100644
--- a/Documentation/devicetree/bindings/iio/dac/adi,ad5592r.yaml
+++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5592r.yaml
@@ -21,7 +21,10 @@  properties:
   spi-max-frequency:
     maximum: 30000000
 
-  spi-cpol: true
+  spi-cpol:
+    type: boolean
+    description:
+      The device requires inverse clock polarity (CPOL) mode.
 
   "#address-cells":
     const: 1
diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5755.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5755.yaml
index f866b88e1440..11cec9c991c0 100644
--- a/Documentation/devicetree/bindings/iio/dac/adi,ad5755.yaml
+++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5755.yaml
@@ -22,8 +22,14 @@  properties:
     maxItems: 1
 
   spi-cpha:
-    description: Either this or spi-cpol but not both.
-  spi-cpol: true
+    type: boolean
+    description:
+      The device requires shifted clock phase (CPHA) mode.
+
+  spi-cpol:
+    type: boolean
+    description:
+      The device requires inverse clock polarity (CPOL) mode.
 
   spi-max-frequency: true
 
diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5758.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5758.yaml
index fd4edca34a28..4efcc2c7eaf8 100644
--- a/Documentation/devicetree/bindings/iio/dac/adi,ad5758.yaml
+++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5758.yaml
@@ -17,7 +17,11 @@  properties:
     maxItems: 1
 
   spi-max-frequency: true
-  spi-cpha: true
+
+  spi-cpha:
+    type: boolean
+    description:
+      The device requires shifted clock phase (CPHA) mode.
 
   adi,dc-dc-mode:
     $ref: /schemas/types.yaml#/definitions/uint32
diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5766.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5766.yaml
index a8f7720d1e3e..ceea30f3af55 100644
--- a/Documentation/devicetree/bindings/iio/dac/adi,ad5766.yaml
+++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5766.yaml
@@ -30,7 +30,10 @@  properties:
   spi-max-frequency:
     maximum: 1000000
 
-  spi-cpol: true
+  spi-cpol:
+    type: boolean
+    description:
+      The device requires inverse clock polarity (CPOL) mode.
 
   reset-gpios:
     description: GPIO spec for the RESET pin. As the line is active low, it
diff --git a/Documentation/devicetree/bindings/iio/dac/ti,dac082s085.yaml b/Documentation/devicetree/bindings/iio/dac/ti,dac082s085.yaml
index b0157050f1ee..31e909eca988 100644
--- a/Documentation/devicetree/bindings/iio/dac/ti,dac082s085.yaml
+++ b/Documentation/devicetree/bindings/iio/dac/ti,dac082s085.yaml
@@ -25,10 +25,15 @@  properties:
   reg:
     maxItems: 1
 
-  spi-cpha: true
+  spi-cpha:
+    type: boolean
+    description:
+      The device requires shifted clock phase (CPHA) mode.
+
   spi-cpol:
+    type: boolean
     description:
-      Must be either spi-cpha, or spi-cpol but not both.
+      The device requires inverse clock polarity (CPOL) mode.
 
   vref-supply:
     description: Needed to provide output scaling.
diff --git a/Documentation/devicetree/bindings/iio/gyroscope/adi,adxrs290.yaml b/Documentation/devicetree/bindings/iio/gyroscope/adi,adxrs290.yaml
index 662ec59ca0af..5462efc1b87f 100644
--- a/Documentation/devicetree/bindings/iio/gyroscope/adi,adxrs290.yaml
+++ b/Documentation/devicetree/bindings/iio/gyroscope/adi,adxrs290.yaml
@@ -24,9 +24,15 @@  properties:
   spi-max-frequency:
     maximum: 5000000
 
-  spi-cpol: true
+  spi-cpha:
+    type: boolean
+    description:
+      The device requires shifted clock phase (CPHA) mode.
 
-  spi-cpha: true
+  spi-cpol:
+    type: boolean
+    description:
+      The device requires inverse clock polarity (CPOL) mode.
 
   interrupts:
     maxItems: 1
diff --git a/Documentation/devicetree/bindings/iio/imu/adi,adis16460.yaml b/Documentation/devicetree/bindings/iio/imu/adi,adis16460.yaml
index 340be256f283..f28833915f2b 100644
--- a/Documentation/devicetree/bindings/iio/imu/adi,adis16460.yaml
+++ b/Documentation/devicetree/bindings/iio/imu/adi,adis16460.yaml
@@ -21,9 +21,15 @@  properties:
   reg:
     maxItems: 1
 
-  spi-cpha: true
-
-  spi-cpol: true
+  spi-cpha:
+    type: boolean
+    description:
+      The device requires shifted clock phase (CPHA) mode.
+
+  spi-cpol:
+    type: boolean
+    description:
+      The device requires inverse clock polarity (CPOL) mode.
 
   spi-max-frequency: true
 
diff --git a/Documentation/devicetree/bindings/iio/imu/adi,adis16475.yaml b/Documentation/devicetree/bindings/iio/imu/adi,adis16475.yaml
index a7574210175a..5ae163819a24 100644
--- a/Documentation/devicetree/bindings/iio/imu/adi,adis16475.yaml
+++ b/Documentation/devicetree/bindings/iio/imu/adi,adis16475.yaml
@@ -40,9 +40,15 @@  properties:
   reg:
     maxItems: 1
 
-  spi-cpha: true
+  spi-cpha:
+    type: boolean
+    description:
+      The device requires shifted clock phase (CPHA) mode.
 
-  spi-cpol: true
+  spi-cpol:
+    type: boolean
+    description:
+      The device requires inverse clock polarity (CPOL) mode.
 
   spi-max-frequency:
     maximum: 2000000
diff --git a/Documentation/devicetree/bindings/iio/imu/adi,adis16480.yaml b/Documentation/devicetree/bindings/iio/imu/adi,adis16480.yaml
index dd29dc6c4c19..dab503b54ad0 100644
--- a/Documentation/devicetree/bindings/iio/imu/adi,adis16480.yaml
+++ b/Documentation/devicetree/bindings/iio/imu/adi,adis16480.yaml
@@ -49,8 +49,15 @@  properties:
 
   spi-max-frequency: true
 
-  spi-cpha: true
-  spi-cpol: true
+  spi-cpha:
+    type: boolean
+    description:
+      The device requires shifted clock phase (CPHA) mode.
+
+  spi-cpol:
+    type: boolean
+    description:
+      The device requires inverse clock polarity (CPOL) mode.
 
   reset-gpios:
     maxItems: 1
diff --git a/Documentation/devicetree/bindings/iio/imu/invensense,icm42600.yaml b/Documentation/devicetree/bindings/iio/imu/invensense,icm42600.yaml
index 4c1c083d0e92..9fe3c5993601 100644
--- a/Documentation/devicetree/bindings/iio/imu/invensense,icm42600.yaml
+++ b/Documentation/devicetree/bindings/iio/imu/invensense,icm42600.yaml
@@ -48,8 +48,16 @@  properties:
     description: Regulator that provides power to the bus
 
   spi-max-frequency: true
-  spi-cpha: true
-  spi-cpol: true
+
+  spi-cpha:
+    type: boolean
+    description:
+      The device requires shifted clock phase (CPHA) mode.
+
+  spi-cpol:
+    type: boolean
+    description:
+      The device requires inverse clock polarity (CPOL) mode.
 
 required:
   - compatible
diff --git a/Documentation/devicetree/bindings/iio/proximity/ams,as3935.yaml b/Documentation/devicetree/bindings/iio/proximity/ams,as3935.yaml
index 7fcba5d6d508..1245a4134256 100644
--- a/Documentation/devicetree/bindings/iio/proximity/ams,as3935.yaml
+++ b/Documentation/devicetree/bindings/iio/proximity/ams,as3935.yaml
@@ -23,7 +23,10 @@  properties:
   spi-max-frequency:
     maximum: 2000000
 
-  spi-cpha: true
+  spi-cpha:
+    type: boolean
+    description:
+      The device requires shifted clock phase (CPHA) mode.
 
   interrupts:
     maxItems: 1
diff --git a/Documentation/devicetree/bindings/iio/resolver/adi,ad2s90.yaml b/Documentation/devicetree/bindings/iio/resolver/adi,ad2s90.yaml
index 81e4bdfc17c4..38c0acb96dd6 100644
--- a/Documentation/devicetree/bindings/iio/resolver/adi,ad2s90.yaml
+++ b/Documentation/devicetree/bindings/iio/resolver/adi,ad2s90.yaml
@@ -29,9 +29,15 @@  properties:
       most 2 * 600ns, so the max frequency should be 1 / (2 * 6e-7), which gives
       roughly 830000Hz.
 
-  spi-cpol: true
+  spi-cpha:
+    type: boolean
+    description:
+      The device requires shifted clock phase (CPHA) mode.
 
-  spi-cpha: true
+  spi-cpol:
+    type: boolean
+    description:
+      The device requires inverse clock polarity (CPOL) mode.
 
 additionalProperties: false
 
diff --git a/Documentation/devicetree/bindings/iio/temperature/maxim,max31855k.yaml b/Documentation/devicetree/bindings/iio/temperature/maxim,max31855k.yaml
index 9969bac66aa1..9bbff1a5c0a7 100644
--- a/Documentation/devicetree/bindings/iio/temperature/maxim,max31855k.yaml
+++ b/Documentation/devicetree/bindings/iio/temperature/maxim,max31855k.yaml
@@ -33,7 +33,11 @@  properties:
     maxItems: 1
 
   spi-max-frequency: true
-  spi-cpha: true
+
+  spi-cpha:
+    type: boolean
+    description:
+      The device requires shifted clock phase (CPHA) mode.
 
 required:
   - compatible
diff --git a/Documentation/devicetree/bindings/iio/temperature/maxim,max31856.yaml b/Documentation/devicetree/bindings/iio/temperature/maxim,max31856.yaml
index 873b34766676..44e53f0c84ba 100644
--- a/Documentation/devicetree/bindings/iio/temperature/maxim,max31856.yaml
+++ b/Documentation/devicetree/bindings/iio/temperature/maxim,max31856.yaml
@@ -20,7 +20,11 @@  properties:
     maxItems: 1
 
   spi-max-frequency: true
-  spi-cpha: true
+
+  spi-cpha:
+    type: boolean
+    description:
+      The device requires shifted clock phase (CPHA) mode.
 
   thermocouple-type:
     $ref: /schemas/types.yaml#/definitions/uint32
diff --git a/Documentation/devicetree/bindings/iio/temperature/maxim,max31865.yaml b/Documentation/devicetree/bindings/iio/temperature/maxim,max31865.yaml
index aafb33b16549..f1b6b151ebc9 100644
--- a/Documentation/devicetree/bindings/iio/temperature/maxim,max31865.yaml
+++ b/Documentation/devicetree/bindings/iio/temperature/maxim,max31865.yaml
@@ -26,7 +26,11 @@  properties:
     type: boolean
 
   spi-max-frequency: true
-  spi-cpha: true
+
+  spi-cpha:
+    type: boolean
+    description:
+      The device requires shifted clock phase (CPHA) mode.
 
 required:
   - compatible